Jonker Sailplanes JS1 Series Technical specifications

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 01.04.2016 Accepted section
Page 0-0

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 01.04.2016 Page 0-1 Approved section
JS1 Jet Sustainer Flight Manual Supplement
Model: JS1 with TJ-42 sustainer engine
Serial number:
Registration
Number:
Document number: 1A-5.04.50
Title: JS1 Jet Sustainer Flight Manual Supplement
Date of issue: 01/04/2016
Prepared by: Name: J.S.U Jonker Signature:
Checked by: Name: AP Kotze Signature:
Approval:
Pages marked
‘Approved’are
approved by:
Signature:
Agency:
Stamp:
Date of approval:

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 01.04.2016 Accepted section
Page 0-2
0. General
0.1. Record of Revision
Any revision of the present manual, except actual weighing data, must
be recorded in the following table and in the case of approved
Sections, specifically endorsed by the Agency.
New or amended text in the revised page(s) will be indicated by a
black vertical line in the left hand margin, and the Revision No. and
the date will be shown at the bottom left hand corner of the page.

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 01.04.2016 Accepted section
Page 0-3
Rev.
No
Affected
Section
Affected
Pages
Date of
Issue
Description
Approved
by
Date of
Approval
Date of
Insertion
Signature
1
ALL
ALL
01.04.2016

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 01.04.2016 Accepted section
Page 0–4
0.2. List of effective pages
Affected
Date of
Affected
Date of
Affected
Date of
Affected
Date of
Pages
Issue
Pages
Issue
Pages
Issue
Pages
Issue

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 01.04.2016 Accepted section
Page 0–5
TABLE OF CONTENTS
0. General ...........................................................................0-2
0.1. Record of Revision ..........................................................0-2
0.2. List of effective pages.....................................................0–4
1. General ..........................................................................1–1
1.1. Introduction .....................................................................1–1
1.2. Certification basis ...........................................................1–1
1.3. Warnings, Cautions and Notes.......................................1–2
1.4. Descriptive Data .............................................................1–2
1.5. Technical Data................................................................1–3
1.6. Engine system illustration...............................................1–4
2. Limitations ....................................................................2–5
2.1. Introduction .....................................................................2–5
2.2. Airspeed limits ................................................................2–5
2.3. Airspeed indicator markings ...........................................2–6
2.4. Power-plant fuel and oil ..................................................2–7
2.5. Power plant instrument markings ...................................2–8
2.6. Power plant limitations....................................................2–9
2.7. Approved manoeuvres .................................................2–10
2.8. Kinds of operation.........................................................2–11
2.9. Minimum equipment list................................................2–11
2.10. Temperature restrictions when flying with the engine
running..........................................................................2–12
2.11. Altitude limitations.........................................................2–12
2.12. Limitations and jet system operation placards .............2–13
3. Emergency procedures..............................................3–15
3.1. Introduction ...................................................................3–15
3.2. Engine failure in flight ...................................................3–15
3.3. Fire................................................................................3–17
4. Normal operating procedure .......................................4–1
4.1. JDU primary Controls .....................................................4–1
4.2. Modes overview..............................................................4–3
4.3. Primary Modes ...............................................................4–4
4.4. Transition modes ............................................................4–8

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 01.04.2016 Accepted section
Page 0–6
4.5. Engine Protection modes .............................................4–12
4.6. In-flight operating procedures.......................................4–13
4.7. Ground operation procedures ......................................4–16
5. Engine status and information display ....................5–23
5.1. Status Indicators ...........................................................5–23
5.2. Error messages ............................................................5–31
6. Performance..................................................................6–2
6.1. Engine performance .......................................................6–2
6.2. Flight performance..........................................................6–3
7. System description ......................................................7–1
7.1. Kinematic system ...........................................................7–1
7.2. Electrical system.............................................................7–7
8. Settings..........................................................................8–1
8.1. Fuel and battery levels ...................................................8–2
8.2. Altitude and Outside air temperature..............................8–3
8.3. Viewing Engine log .........................................................8–3
8.4. Password ........................................................................8–4
8.5. Configuration ..................................................................8–5
9. Daily inspection ............................................................9–1

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 01.04.2016 Accepted section
Page 0–7
List of Figures
Figure 1-1: Jet system illustration .....................................................1–4
Figure 2-1: Jet sustainer limitation placard.....................................2–13
Figure 2-2: Fuel placard..................................................................2–13
Figure 2-3: Engine Start-up procedure placard ..............................2–14
Figure 2-4: Engine Shut-down procedure placard..........................2–14
Figure 4-1: JDU primary controls......................................................4–1
Figure 4-2: Modes Overview ............................................................4–3
Figure 5-1: Status indicators...........................................................5–23
Figure 5-2: Display..........................................................................5–25
Figure 6-1: Static thrust and fuel consumption vs RPM ...................6–2
Figure 6-2: Expected saw-tooth profile flown between 2000 and
3000 meters at 95000 RPM..............................................................6–6
Figure 7-1: Kinematics system .........................................................7–1
Figure 7-2: Kinematics system .........................................................7–2
Figure 7-3: Front doors kinematics...................................................7–3
Figure 7-4: Fuel system and tanks ...................................................7–4
Figure 7-5: Fuel system layout diagram ...........................................7–6

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 01.04.2016 Accepted section
Page 0–8
List of Tables
Table 1-1: Engine technical data ......................................................1–3
Table 2-1: Airspeed limits .................................................................2–5
Table 2-2: Airspeed indicator markings ............................................2–6
Table 2-3: Engine technical data ......................................................2–7
Table 2-4: Engine technical data ......................................................2–9
Table 4-1: Throttle settings and thrust ..............................................4–6
Table 5-1: Status indicators description .........................................5–24
Table 5-2: RPM limitations display .................................................5–26
Table 5-3: Temperature limitations display.....................................5–27
Table 6-1: Range from saw tooth profile for different RPM settings
–SI units...........................................................................................6–4
Table 6-2: Range from saw tooth profile for different RPM settings
–US customary units........................................................................6–5
Table 6-3: Endurance & range vs RPM in level flight.......................6–7
Table 9-1: Daily inspection checklist ................................................9–2

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 01.04.2016 Accepted section
Page 0–9
LIST OF ABBREVIATIONS
ECU
Electronic Control Unit
EGT
Exhaust Gas Temperature
JDU
Jet Display Unit
JS
Jonker Sailplanes
OAT
Outside Air Temperature
RPM
Revolutions Per Minute
L/H
Liters Per Hour
GPH
Gallons per hour (US Gallons)
VFR
Visual flight rules
VMC
Visual meteorological conditions

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 31.03.2016 Accepted section
Page 1–1
1. General
1.1. Introduction
This manual has been prepared to provide pilots, instructors and
maintenance personnel with all the information for the safe and
efficient operation of the JS1 sailplanes equipped with jet sustainer
system.
1.2. Certification basis
The JS1 fitted with the turbine jet engine is simply a sustainer version
of the pure sailplane. A jet system designed to sustain the glider in
flight is fitted in the rear fuselage. The system is completely retractable
and, other than requiring additional values for the CG calculation,
does not impact the normal operation of the glider during conventional
soaring flight.

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 31.03.2016 Accepted section
Page 1–2
1.3. Warnings, Cautions and Notes
The following definitions apply to Warnings, Cautions and Notes used
in this Flight Manual.
WARNING: means that the non-observation of the corresponding
procedure leads to an immediate or important
degradation of the flight safety.
CAUTION: means that the non-observation of the corresponding
procedure leads to a minor or to a more or less long term
degradation of the flight safety.
NOTE: draws the attention on any special item not directly
related to safety but which is important or unusual.
1.4. Descriptive Data
The JS1 with TJ-42 is a sustainer version of the pure sailplane. A jet
system designed to sustain the glider in flight is fitted in the rear
fuselage. The system is completely retractable and does not impact
the normal operation of the glider during conventional soaring flight.

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 31.03.2016 Accepted section
Page 1–3
1.5. Technical Data
Engine technical data
Engine
M&D TJ-42
Manufacturer
M&D Flugzeugbau
GmbH, Friedeburg
Maximum rotary speed
97000 RPM
Idle speed
30000 RPM
Thrust at maximum rotary speed
38 daN
Consumption at maximum rotary speed
±60 kg/h
Specific consumption at maximum RPM
0.161 kg/Nh
Thrust at idle speed
1.8 kgf
Consumption at idle speed
7.47 kg/h
Air consumption
0.5 m3 / s
Compression ratio
1 : 3.8
Maximum thermal performance
830 kW
Maximum mechanical performance / shaft
power
140 kW
Exhaust gas temperature at Idle speed
±500 °C
Exhaust gas temperature at maximum RPM
±790 °C (±1472 °F)
System technical data
Complete system weight –no fuel
17 kg
Table 1-1: Engine technical data

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 31.03.2016 Accepted section
Page 1–4
1.6. Engine system illustration
Figure 1-1: Jet system illustration

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 31.03.2016 Accepted section
Page 2–5
2. Limitations
2.1. Introduction
Section 2 includes operating limitations, instrument markings, and
basic placards necessary for safe operation of the aircraft’s engine
systems.
The limitations included in this section have been approved by the
SACAA.
2.2. Airspeed limits
Speed limitations and their operational significance are shown below.
Speed
IAS
Remarks
18 m
21 m
VPO
max
Maximum power
plant extension &
retraction speed
140 km/h
76 kts
Do not extend or retract the engine
above this speed.
VPE
Power plant
extended
maximum
permitted speed
250 km/h
135 kts
Do not exceed this speed with the
engine extended.
Table 2-1: Airspeed limits

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 31.03.2016 Accepted section
Page 2–6
2.3. Airspeed indicator markings
The airspeed indicator requires the following additional markings when
fitted with the jet turbine:
Marking
IAS
Significance
18 m
21 m
Blue
line
_
135 km/h
73 kts
Best rate-of-climb speed VY(if engine is fitted)
Table 2-2: Airspeed indicator markings

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 31.03.2016 Accepted section
Page 2–7
2.4. Power-plant fuel and oil
Table 2-3 gives the power plant, fuel and oil information.
Engine technical data
Fuel
Diesel mixed with 2% 2-stroke oil
Oil
2-stroke oil Castrol Super TT
or Castrol; Sier TTS
Fuel capacity
42 liters
Unusable fuel
0.4 liters
Table 2-3: Engine technical data

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 31.03.2016 Accepted section
Page 2–8
2.5. Power plant instrument markings
The following information is displayed to the pilot on the Jet Display
Unit (JDU):
RPM
Throttle setting
EGT
Fuel quantity
Battery voltage
Fuel flow
Engine status
Error messages
Refer to JS1 Jet Sustainer Flight Manual Supplement Section 5 for a
detailed description of the power plant instrument markings.

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 31.03.2016 Accepted section
Page 2–9
2.6. Power plant limitations
Parameter
Limitation
Max Engine RPM
97 000 RPM
Max Continuous RPM
80 000 RPM
Max continuous EGT
790 °C
Minimum operational outside air temperature
-15 °C
Maximum operating altitude (AMSL)
3000m (10 000ft)
Table 2-4: Engine technical data

JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 31.03.2016 Accepted section
Page 2–10
2.7. Approved manoeuvres
This aircraft is certified in the Utility category (U). With the jet engine
running, the following aerobatic manoeuvres are permitted (18 m
configuration only):
Lazy Eight
Chandelle
Steep turns
Positive loops
Stall turns
Spins
Refer to the Aircraft Flight Manual Section 4.5.10 for the
recommended entry speeds for each manoeuvre.
Note: No aerobatic manoeuvres were demonstrated in the 21 m
configuration.
Note: Intentional spinning with the jet sustainer at any power
setting above idle setting is not permitted.