DG Flugzeugbau LS8 Series Technical specifications

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FLIGHT MANUAL
FOR THE SAILPLANE
LS8
TYPE: LS8
VARIANTS: LS8
LS8-a
LS8-18
LS8-b
TC Data Sheet No.: EASA.A.047
Issued: June 2016
Owner:
Ser. No.:
Registration:
Flight manual approved by.
Authority EASA
Date of approval 05 August 2016
This sailplane is to be operated in compliance with information and limitations
contained herein.
Copyright DG Flugzeugbau GmbH any copy or publishing prohibited
DG Flugzeugbau
Otto Lilienthalweg 2 Telefon [phone]
76646 Bruchsal Telefax [phone]
www.dg-flugzeugbau.de [email protected]
Spare part- and material sales: Tel. [phone]
[e-mail]
DG
FLU GZ EU GBAU GM BH

Flight Manual LS 8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 0-1
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
0Manual Contents
0.1 Log of Revisions
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
responsible airworthiness authority.
The new or amended text in the revised page will be indicated by a black vertical
line in the right hand margin, and the revision No. and the date will be shown on
the bottom left hand of the page.
No Page Description Date EASA
approval
0.1 all Combination of the initial
Flight Manuals of the
Variants LS8, LS8-a, LS8-b,
LS8-18, new standardized
format
June
2016
05
August
2016
0.2 1-2, 1-4, 2-4, 2-5, 2-9,
2-10, 2-12, 4-5, 4-6,
4-13, 4-18, 6-1, 6-4,
7-11, 8-2, 8-3, 8-4
(6-1, 6-4 text from LS8-b
taken for all variants)
TN8024
Miscellaneous changes to the
last revisions of the initial
flight manuals
June
2016
05
August
2016

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 0-2
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
0.2 List of Effective Pages
Section Page issued replaced replaced
0 Titel June 2016
0-1 See manual amendments
0-2 "
0-3 "
0-4 "
0-5 "
0-6 " June 2016
1 1-1 June 2016
1-2 März 2011
1-3 June 2016
1-4 June 2016
1-5 June 2016
2 EASA-app. 2-1 June 2016
" 2-2 June 2016
" 2-3 June 2016
" 2-4 June 2016
" 2-5 June 2016
" 2-6 June 2016
" 2-7 June 2016
" 2-8 June 2016
" 2-9 June 2016
" 2-10 June 2016
" 2-11 June 2016
" 2-12 June 2016
" 2-13 June 2016
3 " 3-1 June 2016
" 3-2 June 2016
" 3-3 June 2016
" 3-4 June 2016
" 3-5 June 2016
" 3-6 June 2016
" 3-7 June 2016
" 3-8 June 2016
" 3-9 June 2016

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 0-3
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
0.2 List of Effective Pages continued
Section Page issued replaced replaced
4 EASA-app. 4-1 June 2016
" 4-2 June 2016
" 4-3 June 2016
" 4-4 June 2016
" 4-5 June 2016
4 4-6 June 2016
4-7 June 2016
" 4-8 June 2016
" 4-9 June 2016
" 4-10 June 2016
" 4-11 June 2016
" 4-12 June 2016
" 4-13 June 2016
" 4-14 June 2016
" 4-15 June 2016
" 4-16 June 2016
" 4-17 June 2016
" 4-18 June 2016
" 4-19 June 2016
" 4-20 June 2016
" 4-21 June 2016
" 4-22 June 2016
" 4-23 June 2016
" 4-24 June 2016
" 4-25 June 2016
" 4-26 June 2016
" 4-27 June 2016
5 " 5-1 June 2016
" 5-2 June 2016
EASA-app. 5-3 June 2016
5-4 June 2016

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 0-4
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
0.2 List of Effective Pages continued
Section Page issued replaced replaced
6 6-1 June 2016
6-2 June 2016
6-3 June 2016
6-4 June 2016
7 7-1 June 2016
7-2 June 2016
7-3 June 2016
7-4 June 2016
7-5 June 2016
7-6 June 2016
7-7 June 2016
7-8 June 2016
7-9 June 2016
7-10 June 2016
7-11 June 2016
8 8-1 June 2016
8-2 June 2016
8-3 June 2016
8-4 June 2016
8-5 June 2016
8-6 June 2016
8-7 June 2016
8-8 June 2016
8-9 June 2016
8-10 June 2016
9 9-1 June 2016

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 0-5
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
0.3 Table of Contents
No. Section Approval Status
1 General ................................................................................non-approved
2 Limitations ................................................................................. approved
3 Emergency Procedures ............................................................. approved
4 Normal Procedures.................................................................... approved
5 Performance.....................................................................partly approved
6 Weight and Balance............................................................ non-approved
7 Description of Systems)......................................................non-approved
8 Handling, Servicing and Maintenance ............................. non-approved
9 Supplements ........................................................................non-approved

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 1-1
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
1General
Contents of Section 1:
1 General ........................................................................ 1-1
1.1 Introduction .............................................................. 1-2
1.2 Certification Basis .................................................... 1-2
1.3 Warnings, Cautions and Notes (Definitions) ........... 1-3
1.4 Descriptive and Technical Data ............................... 1-4
1.5 Three View Drawing ................................................ 1-5

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 1-2
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
1.1 Introduction
This sailplane Flight Manual has been prepared to provide pilots and
instructors with information for the safe and efficient operation of the LS 8
sailplane.
This manual includes the material required to be furnished to the pilot by
JAR Part 22. It also contains supplementary data supplied by the sailplane
manufacturer.
The LS8 is a high performance sailplane, not a basic trainer. However
excellent in design, construction, performance and handling qualities, flying
it requires a skilled pilot, who observes the limitations and recommendations
set out in this manual.
1.2 Certification Basis
This type of sailplane has been approved by Luftfahrt-Bundesamt (LBA)
Braunschweig in accordance with JAR-22 dated 28. October 1985, (Change
5).
The Type Certificate EASA A.047 for the variant LS8 was issued on
17.05.2006.
The Type Certificate LBA No. 402 for the variant LS 8-a was issued on
17.05.1996.
The Type Certificate LBA No. 402 for the variant LS 8-18 was issued on
20.01.2000.
The Type Certificate LBA No. 402 for the variant LS 8-b was issued on
13.05.2002.
15.09.2010 the variants LS8-a, LS8-b, and LS8-18 have been incorpoated
into the EASA Type Certificate A.047.
Category of Airworthiness: "Utility".

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 1-3
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
1.3 Warnings, Cautions and Notes
The following definitions apply to warnings, cautions and notes used in the
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 to any special item not directly related to
safety, but which is important or unusual.

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 1-4
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
1.4 Descriptive and Technical Data
The LS 8-b is a single seater sailplane with carbon fibre wing shell, winglets,
T-tail, wing and vertical tail fin water ballast systems, retractable and sprung
landing gear, and upper wing surface air brakes. The LS8-b may be operated
in 15m or 18m span and winglets in both versions. Structurally it is prepared
for later installation of an engine (self-sustainer).
This sailplane has been produced using the latest technology of industrial
fibre design (Glass-, Aramid- and Carbon fibres).
It is designed for competition flights – high performance combined with
excellent handling characteristics.
Wing span 15m 49.21ft 18m 59.6ft
Length 6.66m 21.84ft 6.66m 21.84ft
Height 1.33m 4.36ft 1.33m 4.36ft
MAC 0.700m 2.3ft 0.634m 2.08ft
Wing area 10.5 m² 113.0sq.ft 11.4 m² 122.9sq.ft
Wing aspect ratio 21.43 21.43 28.42 28.42
Maximum gross weight 525kg 1157lbs 525 kg 1157lbs
Maximum wing loading 50.0 kg/m² 10.3lbs/sq.ft 46.1 kg/m
²
9.4lbs/sq.ft
Note: The variant LS8 is only certified with 15 m wingspan.
The variant LS8-a was designed for 15 m wingspan, but optionally could be
delivered prepared for retrofit of 18 m wingtip extensions (TN8001).
When executing TN8002 (Conversion LS8-a to LS8-18) the variant LS8-a will be
converted to variant LS8-18 and may be operated alternatively with 15 m or 18 m
wingspan.

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 1-5
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
1.5 Three View Drawing

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 EASA app. 2-1
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
2Limitations
Contents of Section 2:
2 Limitations ............................................................. 2-1
2.1 Introduction .......................................................... 2-2
2.2 Airspeeds (IAS) ................................................... 2-3
2.3 Airspeed Indicator colour markings .................... 2-4
2.4 Mass (Weight) ..................................................... 2-5
2.5 Centre of Gravity Limits ..................................... 2-7
2.6 Manoeuvre Limits, Category of Airworthiness .. 2-8
2.7 Manoeuvring Load Factors ................................. 2-8
2.8 Kinds of Operation Limits .................................. 2-8
2.9 Flight Crew .......................................................... 2-9
2.10 Minimum Equipment List ................................. 2-10
2.11 Aero Tow, Winch Launch and Auto Tow ......... 2-11
2.12 Further Limitations ............................................ 2-12
2.12.1 Operating Placards for Limitations .............. 2-12
2.12.2 Approved Gelcoats for Exterior Surfaces .... 2-13
2.12.3 Use of Water for Ballast ............................... 2-13

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 EASA app. 2-2
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
2.1 Introduction
Section 2 includes operating limitations, instrument markings and basic
placards necessary for safe operation of the LS8-b sailplane, its standard
systems and standard equipment.
The limitations included in this section and in section 9 have been approved
by LBA (Luftfahrt-Bundesamt Braunschweig).
The LS 8-b sailplane has been designed and approved according to JAR 22
requirements. Factors of safety (relation of ultimate loads to permissible
maximum loads occurring during operation) are 1.5 only. Thus, ultimate
loads will be reached, when exceeding permissible load factors by 50%.
When exceeding permissible speeds, the safety reserve is much lower.
Maximum loads should never be caused by the pilots control surface
deflections – they result from severe turbulence and the necessary control
surface deflections to retain the desired flight attitude.
Severe turbulence according to airworthiness requirements includes wave
rotors, cumulonimbus clouds, dust devils and turbulence when crossing
mountain ridges in strong winds.
Warning: Therefore, operational limits, - speeds and load factors - must be
adhered to !

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 EASA app. 2-3
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
2.2 Airspeeds (IAS)
Airspeed limitations and their operational significance are shown below:
Maximum
permissible Speed IAS Remarks
VNE
Never exceed speed
in calm air and up to
an altitude above
MSL of:
Km/h kt.
mph
Do not exceed this speed in any
operation and do not use more than
1/3 of control deflection.
2000m ( 6500ft) 280 151 174
3000m ( 9800ft) 266 144 165
4000m (13100ft) 253 137 157
6000m (19700ft) 227 122 141
8000m (26200ft) 202 109 126
10000m (32800ft) 179 97 111
12000m (39400ft) 156 84 97
VRA Rough air speed 190 103 118
Do not exceed this speed except in
calm air and then only with caution.
Examples of rough air are lee wave
rotor, thunderclouds, dust devils
and turbulence when crossing
mountain ridges in strong winds.
VA Manoeuvring speed 190 103 118
Do not make full or abrupt control
movement above this speed,
because under certain conditions
the sailplane may be overstressed
by full control movement.
VW Maximum winch-
launching speed
140 76 87
Do not exceed this speed during
winch- or auto-tow launching.
VT Maximum aero
towing speed
190 103 118
Do not exceed this speed during
aero towing.
VL0 280 151 174
Maximum landing
gear operating speed
Do not extend or retract the landing
gear above this speed.
Maximum air brake
extension speed
280 151 174

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 EASA app. 2-4
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
2.3 Airspeed indicator colour markings
Airspeed indicator markings and their colour- code significance are shown
below:
Marking (IAS)value or range Significance
Green arc 97-190 km/h Normal Operating range.
52-103 kt.
60-118 mph
Yellow arc 190-280 km/h
103-151 kt.
118-174 mph
Manoeuvres must be conducted with caution
and only in smooth air.
Red line 280 km/h
151 kt.
174 mph
Maximum speed for all not restricted
operations.
Yellow 90 km/h
triangle 49 kt.
56 mph
Recommended minimum approach speed at
maximum weight without water ballast
For an example of airspeed indicator colour marking see below and
Maintenannce Manual section 7.5..
Airspeed Indicator, diameter 80 mm <3.15 in>, see
(This type of marking is not possible with 57 mm <2.24 in> diameter.)
green
yellow
red
red altitude related VNE
markings, here in km
Without altitude related VNE
markings on the dial, a VNE
placard according to section
2.12 must be on the
instrument panel.

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 EASA app. 2-5
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
2.4 Mass (Weight)
Maximum take-off mass including water ballast......525 kg 1157 lbs
Maximum mass without water ballast
LS8-b, LS8-18 .....412 kg 908 lbs
LS8, LS8-a...........410 kg 904 lbs
Recommended landing mass..............500 kg 1102 lbs
Warning: It is recommended to discharge water ballast before each landing.
Pilots are advised against landing with maximum all-up mass. When flying with
maximum all-up mass, at least 25 Litres –6.6 US gallons, 5.5 Imp. gallons -
(corresponding to about 15 Seconds of discharge time) should be discharged.
Maximum mass of non-lifting parts
LS8-b, LS8-18......239 to 249 kg 527 to 549 lbs
LS8, LS8-a 244 to 253 kg 538 to 558 lbs
Value must be determined according to table in Maintenance Manual, section
2, related to empty mass and empty mass C.G. position. The term “non-
lifting” parts includes the following:
•Fuselage (with permanently installed instruments, canopy and main pins)
•Cockpit load (Pilot + parachute + equipment <for instance battery in
baggage compartment>)
•Waterballast in tail fin to compensate pilot mass
•Horizontal tail
Water ballast (to compensate wing ballast) and battery in tail fin do not count
for “non-lifting” parts, but for maximum all-up weight.

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 EASA app. 2-6
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
2.4 Mass (Weight) continued
Max. wing water ballast tank capacities:
LS8:
Maximum approved capacity of water bags: about 50 <110> resp. 75 kg
<165lbs> per wing= total of 100 <240> rsp. 150.0 kg <331 lbs>
LS8-a, LS8-18, LS8-b:
Maximum approved capacity of integral tanks: about 95 kg <209 lbs> per
wing= total of 190.0 kg <419 lbs>
Warning: Wing water ballast must always be compensated by tail fin water
ballast according to table in section 4.5.10.5 .
Maximum tail tank capacity:
LS8:
Maximum tail tank capacity: without battery box 5.5 kg <12 lbs>
with battery box 3.8 to 4.1 kg <8.4 to 9.0 lbs>
LS8-a and LS8-18:
without battery box ...........5.5 kg <12 lbs>
with battery box .....3.8 to 4.1 kg <8.4 to 9.0 lbs>
Integral tank.....................12.0 kg <24.5 lbs>
LS8-b: (Integral tank) 7.5 kg <16.5 lbs>
Maximum mass in Baggage Compartmentmax. 5.0 kg11 lbs
Maximum mass of all instrument panel installationsmax. 6.7 kg 14.8 lbs
Warning: The vertical tail fin battery may be removed from the tail fin to reduce
Minimum Cockpit Load (see entries in section 6.2 for possible combinations !)

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 EASA app. 2-7
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
2.5 Centre of Gravity Limits
Datum Point: Leading edge of wing at root, when under side of fuselage
boom is placed horizontal.
Take-off C.G. position [mm aft of Datum]
Maximum allowable forward C.G. Position at maximum Mass: 280 mm
<11.024 in> aft of Datum
Maximum allowable rearward C.G. Position: 400 mm <15.748 in> aft of
Datum
Warning: Vertical tail fin water ballast must be used to compensate C.G.
displacement due to wing water ballast, surplus may be used to compensate pilot
weight above Minimum Cockpit Load !
Maximum amounts see section 4.5.10.5.

Flight Manual LS8 (LS8, LS8-a, LS8-18, LS8-b)
Issued: June 2016 EASA app. 2-8
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
2.6 Approved manoeuvres / Category of Airworthiness
The LS 8 sailplane is certified in the U ("Utility") category according to JAR
22.
Aerobatic flight not approved.
2.7 Manoeuvring load factors
At 190 km/h, 103kt., 118 mph.........5.3 g positive to 2.65 g negative
At 280 km/h, 151 kt., 174 mph (Air brakes retracted) 4.0 g positive to
1.5 g negative
At 280 km/h, 151 kt., 174 mph (Air brakes extended) 3.5 g positive to
0.0 g negative
2.8 Kinds of operation
The LS8 sailplane is approved for Day-VFR
Use of water ballast limited to non-freezing conditions.
Additives to water ballast not approved.
Cloud flying only approved without water ballast
Applicable only only for countries, which permit cloud flying and when
minimum equipment is certified for cloud flying, see inspectors entry in
inspection certificate.
Minimum equipment see section 2-10.
For USA only:
Night-VFR, IFR and Flight into known icing conditions are not approved.