M+D JS-MD 3 RES User manual

JS-MD 3 RES
Aircraft Flight Manual Supplement

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue:
02
Rev. 00
Rev. Date: 24-Mar-23
Page i
JS-MD 3 RES Flight Manual Supplement
Type:
JS
-MD Single
Model:
JS
-MD 3 RES
Marketing name
:
JS
-3 RES
Serial number:
Registration Number:
Document number:
MD11
-AFM-00-002
Title:
JS
-MD 3 RES
Flight Manual Supplement
Issue:
02
Date of issue:
24
March 2023
Created by
:
Release by HOA
The technical content of this document is approved under the authority
of the DOA ref. EASA.21J.603.
Sections 2, 3, 3.1, and 7 are approved by the EASA through
EASA.A.616.
Copyright ©:
M&D Flugzeugbau GmbH & Co.KG
Streeker Straße 5b
D-26446 Friedeburg
-All rights reserved-
Uys Jonker
Digitally signed by Uys Jonker
Date: 2023.03.29 15:39:09 +02'00'
Michael Schwarz
2023.03.30 14:53:28 +02'00'

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
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JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 0–1
0 Document Management
Record of Revisions
Issue
Date
Reason for Change
00
16.05.2022
Initial Issue
01
13.12.2022
Grammar improvements made to entire document
Added Rescue card and Propeller warning Decal
Minimum RES system temperature corrected to -15˚C
EXT/RETR toggle switch or command knob to be used,
instead of RES guarded master switch, to immediately
remove power when system is drawing high amps
Warning added that no person should be within proximity
of pylon/propeller when extended
Added check for operation of fan at a controller
temperature of 40˚C (104 ˚F) and higher
Caution added to always verify vertical alignment of
propeller via the rear-view mirror
Maximum current of DC-DC Converter added
Note added regarding battery ventilation through exhaust
in battery and fuselage during thermal event
Winter charging changed to storage charging
Charger manual removed and reference to charging
instruction sheet added
02
24.03.2023
Added SOC check to Pre-flight Test run
Added flap position to Self-launch procedure
Added power automatically reduces when controller
temperature exceeds 75˚C.
Open storm window added to Self-launch procedure
Aerotow Assisted Self-launch limitation and procedure
added

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 0–2
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JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 0–3
Record of Amendments
Date of Issue/
Revision
Date of
Insertion
Signature

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 0–4
Table of Contents
JS-MD 3 RES Flight Manual Supplement............................................i
Document Management ...................................................................0–1
Record of Revisions .......................................................................0–1
List of Effective Sections................................................................0–2
Record of Amendments..................................................................0–3
Table of Contents...........................................................................0–4
List of Figures.................................................................................0–7
List of Tables..................................................................................0–8
List of Abbreviations.......................................................................0–8
1General .......................................................................................1–1
Introduction.....................................................................................1–1
Certification Basis...........................................................................1–1
Warnings, Cautions, and Notes......................................................1–1
Descriptive Data.............................................................................1–2
Technical Data ...............................................................................1–2
RES Illustration...............................................................................1–2
2Limitations .................................................................................2–1
Airspeed Limits...............................................................................2–1
Airspeed Indicator Markings...........................................................2–1
Powerplant Instrument Markings....................................................2–2
Powerplant Limitations...................................................................2–3
Approved Manoeuvres ...................................................................2–4
Minimum Equipment List................................................................2–6
Aerotow Assisted Self Launch........................................................2–6
Temperature restrictions when flying with the RES........................2–7
Altitude limitations ..........................................................................2–7
Limitations and RES Operation Placards or Decals.......................2–7
3Inspections.................................................................................3–1
Pre-Flight Inspection ......................................................................3–1
Propeller Alignment Test................................................................3–2
Pre-flight test run............................................................................3–3
4Control and Display...................................................................4–1
Guarded RES Master Switch..........................................................4–1

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 0–5
DCU primary controls.....................................................................4–2
Normal Operation Screens.............................................................4–3
Other Information Screens .............................................................4–8
Warning Caution and Information Messages................................4–10
5Emergency Procedures ............................................................5–1
400 V Insulation Failure..................................................................5–1
Propulsion System Failures in Flight..............................................5–2
Fire.................................................................................................5–5
6Normal Operating Procedures .................................................6–1
Charging and Battery Installation ...................................................6–1
Aerotow Assisted Self-launch Procedure .......................................6–8
Self-Launch Procedure.................................................................6–11
Inflight Start Procedure.................................................................6–13
Inflight motor Stop Procedure.......................................................6–14
Ground Operation Procedures .....................................................6–15
7Performance...............................................................................7–1
Take-Off Performance (dual battery)..............................................7–2
Take-Off Performance (single battery)...........................................7–4
Sustained Performance (dual battery)............................................7–4
Sustained Performance (single battery).........................................7–6
Cruise flight –level flight minimum power ......................................7–7
8System Description...................................................................8–1
Kinematic System...........................................................................8–1
Powerplant .....................................................................................8–1
Electrical System............................................................................8–4
Fire Warning System......................................................................8–5
Miscellaneous Equipment ..............................................................8–6
9HV Battery Handling, Care, and Transport .............................9–1
Battery Care...................................................................................9–1
Trailer Considerations ....................................................................9–3
10 APPENDIX –List of Warnings/Cautions............................10–1
11 Service Bulletins..................................................................11–1
12 STCs and Minor Change Approvals...................................12–1

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 0–6
13 Contact...................................................................................13-1
Type Certificate Holder..................................................................13-1
Manufacturer.................................................................................13-1

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 0–7
List of Figures
Figure 1-1 JS3 with RES pylon extended.......................................................1–2
Figure 2-1 RES limitations placard.................................................................2–8
Figure 2-2 Motor start and stop procedure placard ........................................2–8
Figure 2-3 High voltage warning placard........................................................2–9
Figure 2-4 Propeller warning placard.............................................................2–9
Figure 2-5 Rescue Card...............................................................................2–10
Figure 4-1 Guarded RES master switch and battery selector switch .............4–1
Figure 4-2 DCU Primary Controls ..................................................................4–2
Figure 6-1 Inside aircraft charging diagram (dual battery)..............................6–1
Figure 6-2 Terminal connector and charging port in cockpit...........................6–2
Figure 6-3 Inside aircraft charging diagram (single battery) ...........................6–3
Figure 6-4 Single battery with terminal connector..........................................6–3
Figure 6-5 Outside aircraft battery charging diagram (dual battery)...............6–4
Figure 6-6 Outside aircraft charging diagram (single battery) ........................6–5
Figure 6-7 Terminal connector installation (dual battery) ...............................6–6
Figure 6-8 Terminal connector installations (single battery)...........................6–7
Figure 7-1 Rate of climb vs aircraft weight at ISA conditions .........................7–3
Figure 7-2 Recommended Take-off profile at maximum weight.....................7–3
Figure 7-3 Optimum flight profile for dual battery operation ...........................7–5
Figure 7-4 Optimum flight profile for single battery operation.........................7–6
Figure 8-1 Emectric HV battery......................................................................8–2
Figure 8-2 System Overview..........................................................................8–4
Figure 8-3 RES HV battery charger ...............................................................8–6

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 0–8
List of Tables
Table 1-1 System Technical Data ..................................................................1–2
Table 2-1 Airspeed Limits...............................................................................2–1
Table 2-2 Airspeed Indicator Markings...........................................................2–1
Table 2-3 Display of Limitations for Dual Battery Operation...........................2–2
Table 2-4 Powerplant Limitations...................................................................2–3
Table 2-5 Dual Battery Self-launch Limitations ..............................................2–5
Table 7-1 Take-Off Performance at Maximum Weight...................................7–2
Table 7-2 Sustained Performance (dual battery)............................................7–4
Table 7-3 Sustained Performance (single battery).........................................7–6
Table 7-4 Cruise Flight Performance .............................................................7–7
Table 8-1 Battery Technical Data...................................................................8–3
List of Abbreviations
AMM
Aircraft Maintenance Manual
CAN
Controller Area Network (communications bus)
DCU
Display and Control Unit
DC-DC
Direct current to direct current (power conversion)
EASA
European Aviation Safety Agency
HOA
Head of Airworthiness
HV
High Voltage (typically 400V in this configuration)
IAS
Indicated Airspeed
IMD
Insulation Monitoring Device
HP
Horsepower
ISA
International Standard Atmosphere
kW
Kilowatt
LiPo
Lithium Polymer
Li-ion
Lithium-ion
LED
Light-Emitting Diode

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 0–9
MCP
Maximum Continuous Power
MP
Maximum Power
MTOW
Maximum Take-Off Weight
OAT
Outside Air Temperature
PRS
Power Rail Supply
RES
Rear Electric System
RFU
Retraction and Fuse Unit
RPM
Revolutions per Minute
SB
Service Bulletin
SOC
State of Charge
STC
Supplemental Type Certificate
TAS
True Airspeed
VFR
Visual Flight Rules
VMC
Visual Meteorological Conditions

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
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JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 1–1
1 General
Introduction
This manual has been prepared to provide pilots, instructors, and
maintenance personnel with necessary information for the safe and
efficient operation of JS-MD 3 sailplanes equipped with the RES
(Retractable Electric System).
The marketing name for model JS-MD 3 RES is the JS-3 RES and is
referred to in this manual as the JS-3 RES.
Certification Basis
Refer to the JS-MD 3 RES Aircraft Flight Manual Section 1.2.
Warnings, Cautions, and Notes
The following definitions apply to Warnings, Cautions, and Notes used
in this Flight Manual Supplement.
WARNING: This means that the non-observation of the corresponding
procedure leads to an immediate or important degradation
of flight safety.
CAUTION: This means that the non-observation of the corresponding
procedure leads to a minor or a more or less long-term
degradation of the flight safety.
NOTE: This draws attention to any special item not directly related
to safety, but which is important or unusual.

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 1–2
Descriptive Data
The JS-3 with the RES is a sustainer and self-launch version of the
pure sailplane. A RES is fitted in the rear fuselage. The system is
completely retractable and does not impact the normal operation of the
aircraft during conventional soaring flights.
Technical Data
System Technical Data
Propulsion System
SOLO Electric Propulsion System 80400
Propeller Type
Technoflug KS-1C-120-R-065-S
Max Propeller Speed
4350 RPM
Max Power for Take-Off (2 batteries)
40 kW (53.6 hp)
Max Continuous Power (2 batteries)
25 kW (33.5 hp)
Max Power (1 battery)
25 kW (33.5 hp)
Max Continuous Power (1 battery)
12.5 kW (16.8 hp)
Installed System Weight (without
batteries)
~24 kg (53 lbs)
Table 1-1 System Technical Data
RES Illustration
Figure 1-1 JS3 with RES pylon extended

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 2–1
2 Limitations
Section 2 includes operating limitations, instrument markings, and basic
placards necessary for the safe operation of the aircraft equipped with a
RES.
The limitations included in this section are approved by the EASA.
Airspeed Limits
Table 2-1 gives the speed limitations and their operational significance.
Speed
IAS
Remarks
Vmax
Maximum speed to
operate the RES
150 km/h
(80.9 kts)
Do not exceed this
speed with the motor
running
VPE
Powerplant extended
maximum permitted
speed
150 km/h
(80.9 kts)
Do not exceed this
speed with the pylon
extended.
Table 2-1 Airspeed Limits
Airspeed Indicator Markings
The airspeed indicator requires the following additional markings when
fitted with the RES:
Marking
IAS
Significance
Blue line
_
110 km/h
(59.3 kts)
Best rate-of-climb speed VY(if RES is fitted)
Table 2-2 Airspeed Indicator Markings

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 2–2
Powerplant Instrument Markings
The RES powerplant has a dedicated DCU (Display and Control Unit)
mounted in the instrument panel.
Horizontal graphics bars with overlaid numerical values display critical
operation information to the pilot.
RPM
Power supplied by batteries
Battery State of Charge (SOC)
Battery temperature
Motor temperature
Controller temperature
Operating limits are displayed in green when in the normal operating
range, in yellow when in the caution range, and in red indicating the
maximum limit has been exceeded:
Green
Yellow
Red
RPM
0-4000
4000 - 4350
4350
Power
0 - 25 kW
(0 - 33.5 hp)
25 - 40 kW
(33.5 - 53.6 hp)
40 kW
(53.6 hp)
Motor temperatures
-15 –105 °C
(5 –221 °F)
105 –120 °C
(221 –248 °F)
120 °C
(248°F)
Controller temperatures
-15 –75 °C
(5 –167 °F)
75 –85 °C
(167 –185 °F)
85 °C
(185 °F)
HV battery temperatures
0 –60 °C
(32 –140 °F)
60 –70 °C
(140 –158 °F)
70 °C
(158 °F)
Table 2-3 Display of Limitations for Dual Battery Operation

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 2–3
NOTE: For single-battery operation, the warning threshold
automatically changes to 16kW. Motor / Controller & HV
battery limitations are unchanged.
Refer to Section 4.3 for a detailed description of the powerplant
instrument markings.
Powerplant Limitations
Parameter
Limitation
Maximum propeller speed
4350 RPM
Maximum propeller speed (Rain
conditions)
3800 RPM
Maximum motor temperature
120 °C (248 °F)
Maximum controller temperature
85 °C (185°F)
Maximum HV battery temperature
70 °C (158 °F)
Maximum operating altitude (AMSL)
Same as airframe
Minimum HV battery temperature for
take-off
0 °C (32 °F)
Maximum HV battery temperature for
take-off
32 °C (90 °F)
Maximum time for MP
60s (2 battery configuration)
240s (1 battery configuration)
Table 2-4 Powerplant Limitations
CAUTION: When applying power, the battery temperature will
continuously increase until the maximum allowable
temperature is reached.
CAUTION: Operation of the RES system is prohibited if
component temperatures are less than -15°C (5°F)

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 2–4
Approved Manoeuvres
This aircraft is certified in the Utility category (U). Aerobatic
manoeuvres with RES system installed are not permitted.
2.5.1 Approved Flight Rules
Operation of the JS-3 RES in sustained flight is approved for VFR flight
by day in VMC conditions only.
2.5.2 Motor Start, Run-Up, Taxi Procedures
Taxiing is permitted with the RES, but no provision is made in the JS-3
RES for a steerable tail wheel. Motor operation may also be performed
on the ground for maintenance purposes.

JS-MD 3 RES
Flight Manual Supplement
MD11-AFM-00-002
Issue: 02
Rev. 00
Rev. Date: 24-Mar-23
Page 2–5
2.5.3 Self-Launch
Dual battery self-launch with the RES is permitted with the following
limitations:
Parameter
Limitation
Maximum take-off weight (MTOW)
18 m: 575 kg (1267.7 lbs)
15 m: 525 kg (1157.4 lbs)
Minimum HV Battery State of
Charge (SOC) for take-off
60%
Minimum pre-take off HV Battery
temperature
0 °C (32 °F)
Maximum pre-take off HV Battery
temperature
32 °C (90 °F)
12V battery supply minimum
voltage
12.8 V
Table 2-5 Dual Battery Self-launch Limitations
NOTE: Self-launch with one HV battery is not allowed.
2.5.4 Approach and Landing
Approaches and landing with the RES running are approved.
NOTE: Operation of the RES over unlandable terrain is not
approved.
NOTE: Cloud flying with the pylon extended is not approved.
CAUTION: Operating the RES in heavy rain is not recommended,
as it may cause damage to the propeller blades.