Jet Central Rabbit KS 100 SE Series User manual

Revision 0.2, February 2016
SE series

1
OPERATION AND
MAINTENANCE MANUAL
INTRODUCTION
JET CENTRAL produces the most advanced micro turbines available today: smaller, more
powerful, faster acceleration, less fuel burn, lower temperatures, higher quality, less
maintenance and the best price. JET CENTRAL, an ISO 9000 Company is a full production
engine manufacturer, producing high quality parts to be assembled into the newest line of micro
turbines.
We are committed to our turbines in a way never seen before. You won’t find a more
knowledgeable company in micro turbines than JET CENTRAL.
SPECIFICATIONS
Thrust: 105 Newton (24 lbs) @ 152.000 rpm Idle
Thrust: 4 Newton (0.9lbs) @ 42.000
RPM range: 42,000-152,000
Weight: 1.0 Kg (2.2lbs)
Diameter: 91.0 mm (3.58”)
Length: 228mm (8.98”)
Exhaust gas temperature: 500°-700°
Fuel consumption: 0.36 Lt/min (12.67oz) @130 k

2
TABLE OF CONTENTS
INTRODUCTION...................................................................................................................................... 1
SPECIFICATIONS..................................................................................................................................... 1
1 Purchase Agreement, Full Assumption of Liability and Indemnity Agreement .......... 4
2 Safety Information............................................................................................................................. 6
2.1 Safety Rules......................................................................................................................................................................7
3 Turbine System Components Description ................................................................................ 8
3.1 Parts List ...........................................................................................................................................................................8
3.2 Turbine..............................................................................................................................................................................9
3.3 Fuel / Oil System ............................................................................................................................................................9
3.4 Kero Start System ..........................................................................................................................................................9
3.5 Hand Data Terminal (HDT).....................................................................................................................................10
3.6 SE POWERPACK / ECU...............................................................................................................................................11
3.6.1 Overview..................................................................................................................................................................................... 11
3.6.2 Features....................................................................................................................................................................................... 11
3.6.3 Measurements.......................................................................................................................................................................... 11
3.6.4 Other functions ........................................................................................................................................................................ 12
3.6.5 Micro SD memory slot location ........................................................................................................................................ 12
3.7 Optional Telemetry Interface ................................................................................................................................12
4 Turbine System.................................................................................................................................13
4.1 Connections to SE POWERPACK / ECU ................................................................................................................14
4.2 System Batteries .........................................................................................................................................................15
4.3 Receiver battery..........................................................................................................................................................15
4.4 Radio Receiver.............................................................................................................................................................15
4.5 Fuel System Connections .........................................................................................................................................16
4.6 Mounting Turbine and POWERPACK ..................................................................................................................16
5 Programming the SE POWERPACK / ECU................................................................................17
5.1 Welcome Screens........................................................................................................................................................17
5.2 Main Screen...................................................................................................................................................................17
5.3 Menu Screen .................................................................................................................................................................18
5.4 Starting Parameters Sub-menu .............................................................................................................................18
5.5 Running Parameters Sub-menu ............................................................................................................................19
5.5.1 Air Speed Limit / Turboprop RPM Limit...................................................................................................................... 20
5.6 Radio Adjustment Sub-menu..................................................................................................................................20
5.6.1 Transmitter Setup .................................................................................................................................................................. 20
5.6.2 Throttle Curves........................................................................................................................................................................ 21
5.6.3 Types of Throttle Curves ..................................................................................................................................................... 22
5.7 Info Menu.......................................................................................................................................................................22
5.8 Battery Menu................................................................................................................................................................23
5.9 Alarm Display...............................................................................................................................................................23
5.9.1 Stop Alarms ............................................................................................................................................................................... 23
5.9.2 Info Alarms ................................................................................................................................................................................ 24
5.9.3 Turbine Status Messages..................................................................................................................................................... 24
5.9.4 Turbine Alarm Messages..................................................................................................................................................... 25
5.10 World Menu................................................................................................................................................................26
5.11 Memory Menu............................................................................................................................................................26
5.11.1 Using the micro SD Card ................................................................................................................................................... 26
5.12 Test Menu....................................................................................................................................................................27

3
6 Turbine Starting...............................................................................................................................27
6.1 Preparing the Turbine for Installation...............................................................................................................27
6.2 Important notes ..........................................................................................................................................................27
6.3 Priming...........................................................................................................................................................................28
6.4 First engine runs.........................................................................................................................................................29
6.5 Starting procedure .....................................................................................................................................................29
6.6 Engine shut down procedure .................................................................................................................................30
6.7 What to do in case of an Emergency ....................................................................................................................30
7 Fuel, Oil and Fuel System Care ....................................................................................................30
7.1 Recommend Fuel ........................................................................................................................................................30
7.2 Recommend Oil ...........................................................................................................................................................30
7.3 Fuel Filter ......................................................................................................................................................................31
7.4 Header Tank.................................................................................................................................................................31
7.5 Fuel Line.........................................................................................................................................................................31
7.6 Tanks...............................................................................................................................................................................31
8 Multiengine Installation................................................................................................................31
9 Maintenance ......................................................................................................................................31
10 Troubleshooting ............................................................................................................................32
11 Optional Accessories....................................................................................................................33
11.1 S-Bus Pitot speed sensor .......................................................................................................................................33
11.2 S-Bus Turboprop RPM sensor .............................................................................................................................33
11.3 S-Bus Telemetry adaptor ......................................................................................................................................33
12 Jet Central BB Software ...............................................................................................................33
12.1 Introduction...............................................................................................................................................................33
12.2 Using the application ..............................................................................................................................................34
12.3 Dynamic Graphics ....................................................................................................................................................35
13 Turbine Quick Start Guide .........................................................................................................35
14 Safety Tips........................................................................................................................................36
15 Lifetime Turbine Warranty .......................................................................................................37
16 Worldwide Network.....................................................................................................................38
Appendix A: Thrust Graph................................................................................................................39
Appendix B: Mounting Dimensions...............................................................................................39
Appendix C: Pipe Gaps .......................................................................................................................40

4
1 Purchase Agreement, Full Assumption of Liability and
Indemnity Agreement
Buyer purchases from Jet Central, a Limited Liability Company or from one of Jet Central authorized
dealers, a MINIATURE TURBOJET ENGINE for model aircraft, ("Model Engine") for the invoice price,
accompanying this sale, and Buyer and Jet Central agree to all of the following terms and conditions:
1. Buyer's Representations. Buyer represents that he/she is very experienced in model airplane
operation, and that all of the information set forth in the Purchase Application is true and correct. Jet
Central relies on such representations, and would not enter into this sale but for these representations.
2. Buyer's Acknowledgment of Risks and Dangers. Buyer recognizes that operation of the Model Engine
may be dangerous, and that under certain circumstances, its handling will be dangerous. As set forth in
Paragraph 3 below, Buyer accepts full responsibility for all of these risks and waives all liability as against
Jet Central
(a) Buyer's Acknowledgment of Danger. Buyer expressly acknowledges that use of the Model Engine is
dangerous if improperly handled, and could inflict injury if attempts are made to handle it properly, if the
user does not fully acquaint himself/herself with the Model Engine's operation procedures. The Model
Engine may cause burns to the user, or the user's assistant, particularly in the start-up procedure, and
Buyer agrees to use extreme caution. The Model Engine exhaust is extremely hot, and will burn someone
or something placed directly behind the exhaust tube. Highly flammable liquid is used to operate the
Model Engine and it or its fumes will ignite easily and flare up rapidly. The Model Engine itself remains
extremely hot, after it is shut off, and requires a cooling down period. Improper use of the Model Engine or
failure to follow Academy of Model Aeronautics ("AMA") guidelines and rules will result in injury to the
user, the user's assistant, or bystanders. Operation of the Model Engine in any location other than an
approved location, and under safe circumstances could lead to injury to bystanders. A risk exists from
explosion, in the event of tampering, modifications leading to over-speed or extreme metal fatigue.
(b) Buyer's Obligation to Become Fully Acquainted With Operation Procedure. Buyer acknowledges
receipt of operating instructions for the Model Engine which depicts its handling and operation. Buyer
agrees to thoroughly acquaint himself/herself with these materials, and to require his/her assistant to
become equally familiar with them. Buyer expressly agrees not to allow any person to assist in the start-
up procedure of the Model Engine, who has not become thoroughly familiar with these materials.
(c) Agreement to Use Qualified Assistant in Start-Up Procedure. Buyer acknowledges that the start-up
procedure for the Model Engine cannot be safely done, without an assistant. Buyer expressly agrees to
use an assistant, who is thoroughly familiar with the Model Engine and its operation as set forth above, on
each occasion when the Model Engine is started up.
(d) Warning to Bystanders. Buyer acknowledges that injury or burns to bystanders could occur, during
the start-up procedure or when operating the Model Engine. Buyer expressly agrees to take all steps
necessary to assure that no bystander will be in position to receive injuries during the start-up procedure,
or while the Model Engine is running.
3. Full Assumption of Liability; Waiver and Release of Jet Central. Buyer assumes all risk of injury, harm
and damage, of every nature whatsoever, to himself/herself and his/her property. Buyer fully and
completely waives and releases any and all claims which he/she might have at any time arising out of the
purchase, handling, or operation of the Model Engine. This assumption, waiver and release is complete,
full, and comprehensive.
(a) Release Even If Jet Central Is Negligent. The waiver and release contained herein releases Jet
Central from all conduct, no matter how it could be characterized or alleged. Jet Central shall not be liable
for its own negligence, whether active, passive, primary, or secondary. Jet Central shall not be liable for
its sole negligence. Jet Central shall not be liable for its willful misconduct. Jet Central shall not be liable

5
based on any theory in strict liability in tort. Jet Central shall not be liable for any alleged breach of
warranty, whether express or implied, of any nature whatsoever, whether a warranty of fitness for a
particular use, merchantability, or otherwise.
(b) Waiver Effective for All Time. The waiver and release contained herein is effective, without regard to
the passage of time. It is effective indefinitely. It will not be changed by any modification to the Model
Engine, to any later sale, or other changes in circumstances.
(c) Release Extends to Jet Central and all its Associates. The waiver and release contained herein
protects Jet Central, and all of its employees, officers, principals, owners, designers, and agents
("Associates").
4. No Modifications to Model Engine. Buyer agrees to make no modifications of any kind to the Model
Engine. This Agreement pertains to the entire life of the Model Engine.
5. Sale by Buyer to Other Party. Buyer agrees to fully inform any person to whom he/she sells or transfers
the Model Engine, concerning the handling, use, and operation of the Model Engine, and agrees to give
all operating instructions to such person, at or before the time of sale or transfer. The indemnity and hold
harmless agreement contained in Paragraph 3 continues in effect, following such sale or transfer.
6. Severability. In the event any clause, provision, or term of this Agreement is held to be ineffective, void
or otherwise unenforceable for any reason, that clause, provision, or term shall be severed from this
Agreement, and the Agreement shall otherwise remain binding and effective. If any portion of Paragraph
3 is found to be unenforceable, then the parties agree that the fullest and most complete waiver and
release which is permitted by law, shall be effective.
7. This Document Is the Full Expression of Parties' Agreement. This Agreement contains the full and
complete agreement of the parties. There is no representation, term, or provision which is outside this
Agreement. Any and all discussions, oral agreements, and representations are merged into this single
written Agreement. This Agreement cannot be modified or amended in any way, except by written
Amendment, signed by the parties.
8. Paragraph Headings Not Controlling. The heading to any paragraph, or subparagraph of this
Agreement, shall not be dispositive, but may be used to interpret the parties' intentions.
9. No Interpretation of Agreement against Either Party. Buyer understands and expressly acknowledges
that he/she has the right to have an attorney read and review this Agreement, before execution. This
Agreement shall not be interpreted against either party, but shall be interpreted as if it was drafted
mutually by the parties.
IF THE BUYER IS NOT PREPARED TO FULLY ACCEPT THE PURCHASE AGREEMENT, FULL
ASSUMPTION OF LIABILITY AND INDEMNITY AGREEMENT, THE BUYER IS ADVISED TO RETURN
THIS MODEL ENGINE IMMEDIATELY IN NEW AND UNUSED CONDITION TO THE PLACE OF
PURCHASE.

6
2 Safety Information
JET CENTRAL turbine engines are in there own right a single stage centrifugal flow gas turbine engine,
configured to operate as a turbojet engine for use mainly, but not exclusively, in remotely piloted fixed
wing aircraft. Such aircraft and their control systems must be appropriately designed and constructed to
be compatible with the performance of the turbojet engine.
NOTE: The airworthiness, structural design, integrity of the aircraft and its control systems are the entire
responsibility of the owner/builder/operator. JET CENTRAL and its agents cannot accept responsibility for
any failure, structural or otherwise, of the aircraft or its control systems. JET CENTRAL and its agents
cannot accept responsibility for any inappropriate or unauthorized use of the JET CENTRAL engine.
The JET CENTRAL gas turbine engine is a very safe, easy to operate unit. The JET CENTRAL turbine is
a state of the art gas turbine engine and all components are manufactured within the highest standards. If
operated and maintained correctly it will provide years of reliable, trouble-free service, with low
maintenance.
It cannot however, be stressed enough, that the operating instructions are to be fully understood
before attempting to operate your engine. Any alterations to the engine whatsoever, without the
written consent of JET CENTRAL, will render any warranty null and void and as a consequence
the controlling body in your country may not grant approval for use.
JET CENTRAL gas turbines are high performance turbojet engines that need discipline and commitment
to correct and safe operation. With other persons present ALWAYS ENFORCE THE PROPER SAFE
DISTANCES FROM THE TURBINE WHILE IN OPERATION.
The recommended minimum safe distances are:
In front of the turbine: 15 feet (4.6 m)
Beside of the turbine: 25 feet (7.6 m)
Behind the turbine: 25 feet (7.6 m)
CAUTION: Extreme Suction Hazard, which can grasp a hand, fingers or other objects in a moment,
prevails around the intake area. Always be aware of this danger!
NOTE: The supplied FOD screen must be used to maintain warranty and to reduce the hazards to
operators. Additionally it will aid in the prevention of foreign materials from entering the intake of the
turbine during operation. Before operation, make sure there are no lose parts or debris near the turbine.
When the turbine is running never place your hands closer than 6 inches (15 cm) into the area of the
intake. FOD related damage is not covered by the Lifetime Warranty.
CAUTION: Extreme Burn Hazard, always exercise caution around the hot parts of the turbine, to avoid
burns. The outer case at the turbine stage and nozzle reaches 400 - 500ºC (750 - 950 ºF), while the
exhaust gas may exceed 600º C (1290 ºF) at the tail cone exit point. Always be aware of this danger!
NOTE: Fire extinguishers must be on hand at all times during turbine operation, especially during
the starting sequence, the recommend type is the CO2 variety. To avoid hearing damage, always use
hearing protection when near a running turbine engine.
Make sure that the fuel is mixed with the correct amount of synthetic oil for the specific engine. Use only
100% synthetic 2 strokes or turbine oils. (See section 7 for details)
Use common sense when operating model turbine jet aircraft. Never operate in or around heavily
populated areas, and in or around areas experiencing drought or dryness where the fire risk is high.
Always check for fire risk warnings with local authorities in fire prone areas prior to operation.

7
2.1 Safety Rules
Rule 1 Never run your engine indoors; always make sure you are in the open air. Non-associated
persons should be at least 9 meters (10 yards) away from the engine when running. Always have a fully
operational CO2fire extinguisher available and ready for use when starting and running your engine.
Rule 2 When bench running or engine starting in an airframe; never allow yourself or another person to
stand behind or in the rear quadrant of the engine. Always make sure the exhaust of the engine is
directed away from persons and property as the heat of the engine exhaust can cause fire, damage, and
personal injury.
Rule 3 Air will save the engine, in the event of a hot or failed start always isolate the fuel to the engine,
but always keep the starter running*, this will clear the engine of residual fuel and will keep the core of the
engine cool. Do not be afraid to use your fire extinguisher, a CO2extinguisher will not harm the engine in
any way. A hand held blower is another good safety item to have on hand during the startup and shut
down of the turbine, this will aid in the cooling of the turbine.
* NOTE: To initiate manual cooling, lower the throttle trim and raise the throttle stick to full, this will place
the starter motor in manual mode, On –Stick up, Off –Stick down.
Rule 4 Never attempt to start a flooded or wet engine, this will result in a hot or wet start and you will
have flames. To dry out or clear the engine, stand it tail pipe down and either run the starter motor or blow
air through the engine until all residual fuel has been blown out of it.
Rule 5 Always start and shut down the engine with the nose of the plane pointed into the wind.
Rule 6 In the event of a hot start, or sever engine fire, close the throttle and the trim lever to the fully
back position and turn off the fuel isolation valve, this will allow the engine to clear itself, be ready to use
your fire extinguisher. A CO2type extinguisher will not harm the engine in any way. As a last resort; if a
dry powder extinguisher is used and the powder is ingested into the engine then the Turbine must be
returned to the Jet Central service department.

8
3 Turbine System Components Description
3.1 Parts List
Before starting installation of the engine please check the contents against the parts list. If any part is
missing or damaged please contact JET CENTRAL or their agent in your country for correction. DO NOT
substitute missing or damaged parts as this will void your warranty and your country controlling body
approval for use.
Case Contents:
1 –Turbine Engine with integrated ECU
1 –SE POWERPACK Unit
1 –Clear Fuel Line 4mm
1 –Clear Kerosene Start Line 3mm
1 –Clear Fuel Line 6mm
1 –3 Cell LiFePo Battery
1 –Accessory Box
Accessory Box Contents:
1 - On/Off Manual Festo Valve (6mm.)
1 –Hanger 9 Fuel Filter
1 –S-Bus / Power Cable
1 –USB Flash with Manuals
1 –SE Hand Data Terminal (HDT)
1 –JR Style Receiver throttle cable

9
3.2 Turbine
Jet Central Turbines utilize a design containing a single shaft turbojet with an annular combustor. The
single stage axial flow turbine drives a single stage centrifugal compressor. The shaft is supported by 2
fuel/oil lubricated pre-loaded angular contact bearings. The turbine speed is controlled by the amount of
fuel received from the fuel pump, which is controlled by the SE POWERPACK / ECU.
3.3 Fuel / Oil System
The fuel supply for all Jet Central Turbines requires that the user to pre mixed fuel and oil together.
Internal lubrication is achieved by routing fuel oil mix to an internal T-fitting which routes a portion of the
Fuel/Oil mix to the bearings and the rest is sent to the fuel nozzles located in the combustion chamber. It
is important to filter the fuel and use proper types of fuel and oil in the turbine engine. Without proper
filtering one or more of the injector needles could become clogged, thus affecting the proper running of
the engine.
Use the supplied hangar 9 fuel filter between the fuel pump and the turbine; this will help insure that the
oil flow reducer will not be clogged. Failure to use this filter can damage the turbine by reducing the flow
of fuel/oil to the rear bearing! See section 7 for fuel and oil recommendations.
3.4 Kero Start System
The initial start sequence of the turbine utilizes the main fuel source (Kerosene / Jet A / Diesel). This
system uses the fuel pump and solenoid valves located within the POWERPACK module to deliver the
fuel to the combustion chamber, the ceramic igniter located internally within the turbine is powered
momentary to initiate ignition.
When the start command is received by the POWERPACK / ECU there will be an igniter preheat time
delay, after which the starter will turn the turbine to preset RPM before the Kero Start solenoid valve will
modulate, at this time the start fuel will ignite in the combustion chamber resulting in a temperature rise
detected from the EGT probe.
During the start sequence if the temperature rise and RPM’s are within the pre-programmed values,
“Preheat” and “Switchover point”, then the main fuel solenoid valve will modulate to deliver fuel to the
main burner to bring the engine to the proper idle RPM during the remaining starting ramp. The Kero
solenoid valve is automatically closed when the predetermined RPM is reached during the “Fuel Ramp”
stage taking the turbine to the “Running” mode, where Turbine control is handed back to the transmitter
throttle control.
Caution: If accidental flooding occurs; steps should be taken to drain the turbine of excess fuel before
attempting the start sequence. Fuel is liquid and, if unburned, will pool inside the turbine and stay there.
The turbine can hold a large quantity of fuel internally and this excess fuel will be ignited on next
successful startup and will be pushed to the exhaust as soon as the airflow inside the turbine is sufficient.
The exhaust will be ignited causing a hot start (in extreme cases a large fireball) that will not hurt the
turbine, but can destroy the model.

10
3.5 Hand Data Terminal (HDT)
The HDT is a rugged, slim, compact user interface and features a 2.4” portrait mode LCD TFT color
graphical display which can be easily viewed even under the most demanding lighting situations. The
HDT allows for a completely new level of turbine control system monitoring, it utilizes S-Bus
communications and is simple to operate. The HDT is used to monitor the available turbine information
and to program parameters in the integrated Turbine ECU electronics and the POWERPACK. Please
take the necessary time to learn the menus and the operation of the device.
Navigation is intuitive and is accomplished with six easy to use multifunction buttons, they consist of the
following:

11
3.6 SE POWERPACK / ECU
3.6.1 Overview
The SE POWERPACK and ECU included with this Turbine engine is the next generation of integrated
intelligent turbine management systems and features S-Bus communications that allows simple
installation by using only one cable connection and two fuel line connections from the POWERPACK to
the Turbine.
The POWERPACK contains the Fuel Pump Motor, Kero Start Solenoid, Fuel Solenoid, and Interface
Electronics that communicates to the integrated ECU which is located under the Turbine’s front cover.
The S-Bus communications allows for information connectivity through an optional Telemetry interface
module. The ECU’s main function is to control and regulate the POWERPACK fuel pump and solenoids
providing the turbine with the necessary regulation of fuel for safe and controlled operation.
The ECU measures the exhaust gas temperature, monitors the rotor RPM speed, and tracks the relative
position of the throttle stick. It also monitors all of the controls necessary to guarantee that the turbine
operates within the user-defined / factory set parameters of operation.
If any anomalies are detected outside of the predetermined limits of the turbine the ECU will command a
shutdown of the turbine.
3.6.2 Features
New HDT rugged aluminum compact design case with 2.4” portrait mode (240 x 320 resolution) LCD TFT color graphical
display with easy to use selection buttons.
Micro SD card slot to download/upload parameters and black box data
Black box function, records engine sensor measurements every 0.5 sec for up to 10 flights
Barometric pressure corrections for fuel system regulation
Brushless starter motor with electronic brake to aid with clutch disengagement
Service interval elapsed timer
Elapsed engine run timers
RPM input: Magnetic sensor up to 250,000 R.P.M.
Temperature range up to 1000ºC using an internal "K" type thermocouple
PWM (Pulse Width Modulation) pump control, resolution of 8192 steps
Open circuit detection for the ceramic igniter
Adjustable Kero Start parameters
3.6.3 Measurements
The measurements made by the POWERPACK / ECU are:
Exhaust Gas Temperature (EGT)
Turbine Ambient Temperature
RX battery voltage
Pump battery voltage
Pump battery current
Throttle pulse width
Turbine rotor RPM
Total turbine run time
Air Speed, Turbo Prop RPM etc. if optional sensor(s) are connected
Barometric pressure

12
3.6.4 Other functions
Calculation of fuel used
Calculation of ECU battery power used
Graphical display of throttle pulse width
Diagnostics and Alarm posting
RPM Limit for Turboprop output shaft (with optional sensor)
Aircraft Speed Limiter (with optional sensor)
The above measurements can be displayed on the Hand Data terminal (HDT) that is connected to the
POWERPACK/ECU by the integrated S-bus cable.
The configuration/setup parameters are stored in the nonvolatile memory of the ECU. Parameter
changes are supplied by the user utilizing the HDT or may be stored on a user supplied micro SD card
that is inserted into the micro SD slot on the POWERPACK. Black box data may also be viewed utilizing
the PC program titled “Jet Central BB” that is downloaded from the USB stick that was included with the
turbine, the program will execute from your PC, see section 12 for details.
3.6.5 Micro SD memory slot location
The micro SD card slot is located on the bottom side edge of the POWERPACK, see section 5.11 for
details.
3.7 Optional Telemetry Interface
The optional S-Bus telemetry interface that is available separately for purchase provides the
communication protocol interface which allows data to be communicated to your telemetry capable radio
system*. All functions available through the HDT are wirelessly accessible through the telemetry system.
*Contact your Jet Central representative or visit the Jet Central Web site for the latest information for
supported telemetry systems.

13
4 Turbine System

14
4.1 Connections to SE POWERPACK / ECU
Throttle input from the receiver: JR type servo cable
Deans Style Battery input
S-BUS Multiplex connector
S-Bus Hand Data Terminal / S-Bus Telemetry Interface / Sensor Interface
6 mm Fuel line inlet
4 mm Fuel Line Outlet
3 mm Burner Fuel Outlet
Connect the cables to their assigned places, Caution: some of the JR type connectors used can be
connected in the wrong location or inverted, please double check all connections with the included
drawing.
Use the colored labels on the POWERPACK body to connect the connectors to their assigned position.
The input / output connectors have been designed to prevent damage to the internal circuitry in the case
of an incorrect connection.

15
4.2 System Batteries
Two independent power sources are required for the operation of the POWERPACK / ECU.The first is
taken from the radio receiver through the throttle servo connection; the second is the ECU battery that
supplies power to the pump, starter motor, solenoids, ceramic igniter and HDT display. Use only the
recommended ECU battery, the battery types are LiFePo (A123 3s) supplied, or 11.1V 3s LiPo
Warning: Reversing the polarity of the ECU battery may cause destruction of the POWERPACK / ECU
semiconductors or other components.
The ECU battery does not need an on/off switch in the airframe since the ECU has an internal electronic
switch which disconnects it when the power to the receiver is switched off. However; it is recommended
to disconnect the ECU battery when the system will be stored for more than a month.
Note: Make sure to charge your battery properly; it is recommended to re-charge your pack after 4 flights.
Always remove the ECU battery from the model before charging, always use the proper charger for the
battery chemistry (LiFePo), and lastly always verify the cell count programmed into the charger before
charging. Do not exceed a 2C (i.e. 2 x 3800 mAh) charge rate during charging.
Jet Central supplies and recommend 9.9v 3s LiFePo batteries, however 11.1v 3s LiPo may be used.
4.3 Receiver battery
Recommended Receiver voltage range: 5 VDC to 10 VDC
IMPORTANT! It is recommended to use 6 VDC or higher voltage supply to power the receiver / ECU; this
will insure proper operation of the ECU electronics. Make sure to check your receiver and servo
specifications to ensure that they are compatible with this higher system supply. If a voltage regulator is
used; ensure it has the capacity to operate the completed system including servos under full loading
conditions without dropping its voltage regulation. Most modern receivers and servos are designed to
operate directly from two cell lithium batteries.
4.4 Radio Receiver
The POWERPACK / ECU is connected to the radio receiver like a standard throttle servo, receiving
throttle control pulses and power from the receiver battery supply.

16
4.5 Fuel System Connections
The SE POWERPACK features the next generation fuel pump with an improved input (suction line)
design utilizing a 6mm Festo style quick fitting. Connect necessary length of 6mm tube to the suction
side of the pump from the fuel supply, and the 4mm output line from the Festo quick fittings to the turbine.
Place the 6mm Festo manual on/off valve between the air trap and the POWERPACK. We recommend
placing the manual fuel valve where it can be closed easily in case of an emergency.
NOTE: It is recommended to safety tie all non-Festo barbed type fuel fittings with 0.5 mm (.020”) safety
wire.
4.6 Mounting Turbine and POWERPACK
All Jet Central Turbines are supplied with pre-installed stainless steel mounting brackets; see Annex C for
mounting dimensions. It is recommended to mount the turbine with the engraved name facing up. Make
sure to use sufficient sized mounting hardware to secure the turbine to the turbine mounts. The distance
from the tail cone to the thrust tube bell mouth should be set as per the diagram in Appendix B.
The POWERPACK should be mounted on a secure platform using the four mounting tab positions.
Because the POWERPACK is an electronic device, installation in the model aircraft should be similar to
that of the radio receiver. It has to be in an accessible location within the airframe, with limited vibration
and far from the heat of the engine. Consideration should be made for access to the micro SD card which
is located on the bottom side edge of the POWERPACK.
Additionally, because the internal pump motor may produce electrical noise when operating, it is highly
recommended that the installation of this equipment be done at least 2” (5 cm) from the R/C receiver
antenna.

17
5 Programming the SE POWERPACK / ECU
The HDT has a color LCD and five buttons which allow you to move through the various menus and to
change the data settings in each menu page. The presentation of data has been organized in screens.
The first screen displays the engine status readings in real time and the following screen allows the user
to modify the operating parameters. All of the parameters can be modified while the engine is running, so
it is easy to tune the engine without having to start it again to test the new settings. Left button (escape)
allows you to move from the first screen to the submenu screen and back, the rest of the buttons are for
navigation thru the screens and to change values.
5.1 Welcome Screens
When the POWERPACK / ECU is connected to the HDT, the ECU battery is connected and the RX
power is turned on, the HDT display screen will briefly display “INITIALING” with the software version of
the HDT displayed across the bottom of the display, and then briefly displays the Logo of the turbine that
is connected, after a few seconds the main screen will be displayed.
5.2 Main Screen

18
5.3 Menu Screen
By pressing the escape button the menu screen will be displayed.
To access each menu, simply move the cursor (black bar) with the arrow buttons to underline the menu
and push the “OK” button.
All the parameters in the submenus are factory pre adjusted and are a good starting point to fine tune
your engine.
Note: Only make small changes at one time when adjusting the turbine parameters. Before making any
changes it is recommended to down the factory settings to a user supplied micro SD card in case the
original settings need to be restored. See section 13 “Memory Menu” for instructions.
5.4 Starting Parameters Sub-menu
There are only two adjustable parameters in this sub-menu, “Fuel Ramp” values
and “Initial Pump Pw”.
“Fuel Ramp” is the amount of fuel delivered from the end of “Switch over” to
“Idle”. Range of settings is between 0 and 20.
“Initial Pump Pw”is the amount of fuel delivered during the “Ignition”, “Preheat”
and “Switch over” sequence. Range of settings is between 0 and 99.

19
Increasing the values will increase the amount of fuel delivered during the staring sequence, so if in any
of the stages you see excessive flames, reduce the corresponding value.
An “Initial Pump Pw” value that is too low will probably allow ignition of the fuel but it will not be enough to
raise the temperature to sequence to the preheat mode. If you hear or see flames inside the turbine but
still get an “Ignition fail” alarm, increase this value one point at a time until it creates a sufficient
temperature change to sequence to the next step.
A low “Fuel Ramp” value will cause an excessively long time for the turbine to reach the idle state.
5.5 Running Parameters Sub-menu
The top section of the Running Parameters sub menu has five user adjustable parameters:
Max RPM: you can lower this value but you cannot increase it above the factory setting, lower this value
to reduce the available output power (see RPM/thrust chart in Appendix A)
Idle RPM: you can increase this value but cannot decrease below the factory setting.
Acceleration Time: lowering this value will make the turbine response more aggressive in the first half of
the RPM range. Range of settings is between 0 and 20.
Acceleration Curve: lowering this value will make the acceleration more aggressive in the second half of
the RPM range. Range of settings is between 0 and 2.
Deceleration Curve: lowering this value will make the deceleration faster from a high RPM setting to a
lower RPM setting. Range of settings is between 0 and 2.
CAUTION: Aggressive settings in either direction may cause a flameout or excessive flames which
could start an on board fire.