Jonker Sailplanes JS1 Revelation Technical specifications
JS1 Flight Manual - Issue 4
JS1 Flight Manual - Issue 4
JS1 REVELATION FLIGHT MANUAL
Model: JS1-A / B, C-18 / C-21
Serial number:
Registration
Number:
Document
number: 1A-5.04.10
Title: JS1 Revelation Flight Manual
Date of issue: 26 May 2016
Prepared by:
Name: J.S.U. Jonker Signature:
Checked by:
Name: A.P. Kotze Signature:
Approval:
Pages marked
‘Approved’are
approved by:
Signature:
Agency:
SACAA
Stamp:
Date of approval:
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 0- 1
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 case of approved sections,
endorsed by the Agency.
The new or amended text in the revised page will be indicated by a
black vertical line in the left hand margin, and the revision number and
the date will be shown on the bottom left hand of the page.
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Date of issue: 26 May 2016 SACAA Approved section
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0.2 LIST OF EFFECTIVE PAGES
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JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
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JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 0- 5
TABLE OF CONTENTS
General
Approved
Section 1
Limitations
Approved
Section 2
Emergency procedures
Approved
Section 3
Normal operating procedures
Approved
Section 4
Performance
Partially approved
Section 5
Weight and balance
Accepted
Section 6
System description
Accepted
Section 7
Handling and maintenance
Accepted
Section 8
Supplements
Approved
Section 9
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 1- 1
1. General
1.1 Introduction
This Flight Manual has been prepared to provide pilots and instructors
with all the information required for safe and efficient operation of the
JS1 Revelation. All the data that is required by the Airworthiness
Requirement CS-22 to furnish the pilot is contained in this manual. It
also contains supplementary data supplied by the sailplane
manufacturer.
The JS1 Revelation is a high-performance sailplane and not a trainer.
Even though it possesses excellent performance and handling
qualities, it can only be flown by a skilled pilot who complies with the
limitations and recommendations set out in this manual.
If a Jet Sustainer System if fitted, use this manual in combination with
the latest approved JS1 Jet Sustainer Flight Manual Supplement.
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 1- 2
1.2 Certification basis
This aircraft, with production designation “JS-1A Revelation” or “JS-1B
Revelation”has been approved by the South African Civil Aviation
Authority (SACAA) in accordance with CS-22 including Amendment
AMC 22.1555 (a), AMC 22.1585 (f).
The type certificate no. J15/12/550 was issued on 23 February 2010
and amended on 30 June 2012.
The type certificate was amended on 1 June 2016 with the optional
Jet Sustainer System.
The category of airworthiness is U (Utility).
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 longer 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.
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 1- 3
1.4 Descriptive data
The JS1 Revelation is a high-performance single-seat sailplane of
conventional layout with a T-tail. Two wingspan configurations (18 m
and 21 m) can be selected, both of which feature full-span flaperons
The cockpit is designed to protect the pilot in the event of a crash.
Safety features include a crumple zone in the forward structure. The
wing structure consists of spar caps made of carbon fibre rovings and
skins of carbon fibre fabric. The wings are connected with a tongue
and fork arrangement, secured with two main pins. The airbrakes are
a triple blade design on the upper surface of the wing.
Boundary layer control is achieved on the main wing bottom surfaces,
the horizontal stabilizer and vertical fin. All control surface hinge gaps
are sealed with Mylar strips and Teflon-coated tape.
The water ballast system consists of two main tanks, each integral to
a wing and holding approximately 90 litres of water, and two trim tanks
in the vertical fin. The tail ballast tanks consist of an expendable tank
of approximately 7.5 litres and a non-expendable tank of
approximately 5 litres. The 21 m wing tips also feature integral tanks,
with a capacity of approximately 17 litres each. The landing gear
consists of a 5 inch retractable sprung main landing gear with a fixed
tail wheel.
All controls are automatically connected during rigging.
Optionally a retractable jet engine approved for sustained flight can be
fitted.
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 1- 4
1.5 Technical data
Geometry
JS1-A/B
JS1-C 18m
JS1-C 21m
Wing Span
18 m
59.06 ft
21 m
68.88 ft
Wing Area
11.25 m²
121.09 ft2
11.19 m²
120.45 ft2
12.25 m²
131.86 ft2
Aspect Ratio
28.8
35.9
Fuselage Length (JS1-A)
Fuselage Length (JS1-B,C)
7.044 m / 23.11 ft
7.052 m / 23.14 ft
Fuselage Height (JS1-A)
Fuselage Height (JS1-B,C)
1.49 m / 4.89 ft
1.32 m / 4.33 ft
Weight
JS1-A/B
JS1-C 18m
JS1-C 21m
Empty Weight without Engine
310 kg
683 lbs
330 kg
728 lbs
Maximum Weight
600kg
1323 lbs
720kg
1587 lbs
Wing Loading (min) (70kg pilot)
33.9 kg/m²
6.94 lb/ft2
34.1 kg/m²
6.98 lb/ft2
32.6 kg/m²
6.68 lb/ft2
Wing Loading (max)
53.3 kg/m²
10.92 lb/ft2
53.6 kg/m²
10.98 lb/ft2
58.7 kg/m²
12.02 lb/ft2
Glide performance
JS1-A/B
JS1-C 18m
JS1-C 21m
Best Glide Ratio
53
60
Best Glide Speed at MAUW
Flap Setting 4 (9°- 13.5°)
120 km/h
65 kts
Best Glide Speed at 450 kg
Flap Setting 4 (9 ° - 13.5°)
100 km/h
54 kts
Minimum Sink Rate at empty
weight
0.5 m/s
100 ft/min
0.48 m/s
95 ft/min
Table 1.5.0-1
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 1 - 5
1.6 Three-view drawings
1.6.1 JS1-B
Figure 1.6.1-1
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 1 - 6
1.6.2 JS1-C 18 m
Figure 1.6.2-1
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 1 - 7
1.6.3 JS1-C 21 m
Figure 1.6.3-1
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 2 - 1
2. Limitations
2.1 Introduction
Section 2 includes operating limitations, instrument markings, and
basic placards necessary for safe operation of the aircraft, its engine,
standard systems and standard equipment.
The limitations included in this section and in Section 9 have been
approved by the SACAA.
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 2 - 2
2.2 Airspeed limits
Speed limitations and their operational significance are shown below:
Speed
IAS
Remarks
18 m
21 m
VNE
Never exceed
speed
290 km/h
157 kts
270 km/h
146 kts
Do not exceed this speed in any
operation and do not use more
than 1/3 of control deflection
VRA
Rough air speed
203km/h
110kts
Do not exceed this speed except in
smooth air, and then only with
caution. Examples of rough air are
lee-wave rotor, thunderclouds etc.
VA
Manoeuvring
speed
203km/h
110kts
Do not make full or abrupt control
movement above this speed,
because under certain conditions
the sailplane may be overstressed
by full control movement.
VFE
Maximum flap
extended speed
See
Table 2.2.0-2
Do not exceed these speeds with
the given flap setting.
VW
Maximum winch
launching speed
150km/h
81kts
140km/h
76kts
Do not exceed this speed during
winch or auto tow launching
VT
Maximum aerotow
speed
180km/h
97kts
Do not exceed this speed during
aerotow.
Vlo
Maximum wheel
extension speed
200km/h
108kts
Do not extend or retract the
landing gear above this speed.
VPO
max
Maximum power
plant extension &
retraction speed
Refer to JS1 Jet Sustainer Flight Manual
Supplement Section 2.2.
VPE
Power plant
extended
maximum
permitted speed
Table 2.2.0-1
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 2 - 3
The following table shows the maximum allowable airspeed for each
flap setting:
Flap
setting
Deflection
(°)
VFE
18 m
21 m
1
-3°
290km/h
157kts
270 km/h
146 kts
2
+0°
3
+5°
230km/h / 124kts
4
+13.5°
170km/h / 92kts
5
+16.6°
170km/h / 92kts
L
+20°
160km/h / 86kts
Table 2.2.0-2
Note: VFE for flap setting 3 is 240km/h (130kts) for the JS1-A and
JS1-B models.
The maximum allowable airspeeds for each flap setting are indicated
on the airspeed indicator (ASI) with white triangles next to the flap
position number, as indicated in Figure 2.2.0-1 (ASI in km/h) and
Figure 2.2.0- 2 (ASI in knots).
Figure 2.2.0-1 Figure 2.2.0-2
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 2 - 4
2.3 Airspeed indicator marking
The airspeed indicator markings and their colour code significance are
given in Table 2.3.0-1:
Marking
IAS
Significance
18 m
21 m
White
Arc
98 to 160km/h
53 to 86kts
Positive Flap Operating Range. (Lower limit is
1.1 VS01in landing configuration at maximum
weight. Upper limit is maximum speed
permissible with flaps extended positive)
Green
Arc
103 to 203km/h
56 to 110kts
Normal Operating Range. (Lower limit is
1.1VS12at maximum weight and most forward
c. g. with flaps neutral. Upper limit is rough air
speed.)
Yellow
Arc
203 to
290km/h
110 to
157 kts
203 to
270km/h
110 to
146 kts
Manoeuvres must be conducted with caution
and only in smooth air.
Red
Line
_
290km/h
157 kts
270km/h
146 kts
Maximum speed limit for all operations.
Blue
line
_
Refer to Jet Sustainer
Supplement Section 2.3
Best rate-of-climb speed VY(if engine is fitted)
Yellow
Triangle
101km/h
55 kts
Approach speed at maximum weight without
water ballast.
Table 2.3.0-1
1
VSO is defined as the stall speed at maximum weight, in the landing configuration, with
the CG in the most unfavourable position, See CS22.49.
2
VS1 is defined as the stall speed at maximum weight, in a specific selected
configuration, with the CG in the most unfavourable position, See CS22.49.
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 2 - 5
2.4 Power plant fuel and oil
Refer to JS1 Jet Sustainer Flight Manual Supplement Section 2.4
2.5 Power plant instrument markings
Refer to JS1 Jet Sustainer Flight Manual Supplement Section 2.5
JS1 Flight Manual - Issue 4
Date of issue: 26 May 2016 SACAA Approved section
Page 2 - 6
2.6 Mass
The mass limitations for the JS1 are given in Table 2.6.0-1:
Mass definition
Mass limits
18 m
21 m
Maximum All-Up Mass
600 kg
1323 lbs
720 kg
1587 lbs
Maximum Take-Off Mass for winch
launching
600 kg
1323 lbs
600 kg (1)
1323 lbs
Maximum Take-Off Mass for cloud flying
437 kg
963 lbs
(2)
Minimum Take Off Weight when flying
with water ballast
No
limitation
500 kg
1102 lbs
Maximum Mass of non-lifting parts
350 kg
772 lbs
325 kg
717 lbs
Maximum Mass in luggage compartment
15 kg
33 lbs
Table 2.6.0-1
WARNING: Only soft items such as canopy covers and jackets may
be stored in the baggage compartment. This is
necessary to prevent injury to the pilot during an
emergency landing.
CAUTION: Ensure that items stored in the baggage compartment will
not interfere with the operation of the water dump system.
Interference may prevent the pilot from dumping water
ballast during the flight.
NOTE(1): 21 m configuration only demonstrated to 600 kg
NOTE(2): Cloud flying requirements only demonstrated for 18 m
configuration
This manual suits for next models
4
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