Jet Central Rabbit KS 100 SE Series User manual

Revision 0.2, February 2016
SE series

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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

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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

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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

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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

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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.

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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.

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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.

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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

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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.