HPH Glasflugel 304S User manual

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TE EC CH HN NI IC CA AL L D DE ES SC CR RI IP PT TI IO ON N, ,
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OP PE ER RA AT TI IN NG G, , M MA AI IN NT TE EN NA AN NC CE E A AN ND D R RE EP PA AI IR R M MA AN NU UA AL L
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Mo od de el l: : Glasflügel 304 S
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Se er ri ia al l N No o. .: :
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Re eg gi is st tr ra at ti io on n: :
Document No.: 304S/MM
Date of Issue: 08/14
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T Te ec ch hn ni ic ca al l D De es sc cr ri ip pt ti io on n, , O Op pe er ra at ti in ng g, , M Ma ai in nt te en na an nc ce e a an nd d R Re ep pa ai ir r M Ma an nu ua al l
Document No.: 304S/MM
Date of Issue: 08/14
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Table of Contents
P AGE
0.1 L IST OF E FFECTIVE P AGES ........................................................................................................... IV
0.2 R ECORDOF REVISIONS ................................................................................................................. V
1. BASIC TECHNICAL DATA.....................................................................................................1-0
1.1 B ASIC T ECHNICAL DATA .............................................................................................................1-1
1.2 T ECHNICAL D ESCRIPTION ..........................................................................................................1-2
1.2.1 Fuselage.............................................................................................................................1-2
1.2.2 Wing...................................................................................................................................1-2
1.2.3 Horizontal Tail Unit...............................................................................................................1-2
1.2.4 Vertical Tail Unit...................................................................................................................1-2
1.2.5 Water ballast system............................................................................................................1-2
1.3 S AILPLANESYSTEMS .................................................................................................................1-3
1.3.1 Control systems in the fuselage ............................................................................................1-3
1.3.2 Control systems in the wing..................................................................................................1-4
1.3.3 Rudder control system..........................................................................................................1-5
1.3.4 Main landing gear system.....................................................................................................1-6
1.3.5 Control surface deflections and dimensions ...........................................................................1-7
1.3.6 Electric system ....................................................................................................................1-8
2. HANGARING, TRANSPORT, RIGGING..................................................................................2-0
2.1.1 Hangaring, Parking, and Ground Handling.............................................................................2-1
2.2 R IGGING .................................................................................................................................2-2
2.3 D E - RIGGING .............................................................................................................................2-3
3. MAINTENANCE.....................................................................................................................3-0
3.1 M ANDATORY M AINTENANCE .......................................................................................................3-1
3.2 R EGULAR M AINTENANCE ...........................................................................................................3-2
3.3 S PECIAL I NSPECTION P ROCEDURE ..............................................................................................3-4
3.3.1 After hard landing and ground loops......................................................................................3-4
3.4 F REE P LAY IN THE C ONTROL C IRCUITS ........................................................................................3-5
3.5 F REE P LAY IN W ING AND T AIL PLANE A TTACHMENTS ......................................................................3-6
3.6 P RIMARY AND SECONDARY STRUCTURES ......................................................................................3-6
3.7 D AMAGE .................................................................................................................................3-6
3.8 R EPAIRS .................................................................................................................................3-7
3.9 R EMOVALAND R E -I NSTALLATION OF R ELEASES .............................................................................3-8
3.10 C ONTROL S URFACE M OMENTS ...................................................................................................3-9
3.11 P LACARDS AND MARKINGS IN THE C OCKPIT .................................................................................3-10
3.12 C LEANING AND CARE ...............................................................................................................3-11
3.13 L UBRICATIONSCHEME .............................................................................................................3-12
3.14 T IGHTENING T ORQUE M OMENTS T ABLE .....................................................................................3-13
3.15 S AFETY H ARNESS ..................................................................................................................3-13
3.16 P ITOT AND S TATIC L INES AND I NSTRUMENT C ONNECTIONS ...........................................................3-14
3.17 L IST OF INSTRUMENTS .............................................................................................................3-15
3.17.1 Airspeed Indicators.........................................................................................................3-15
3.17.2 Altimeters.......................................................................................................................3-15
3.17.3 Variometers....................................................................................................................3-15
3.17.4 Magnetic Compasses......................................................................................................3-15
3.17.5 Turn and Bank Indicators ................................................................................................3-15
3.17.6 COMM...........................................................................................................................3-16
3.17.7 Transponders.................................................................................................................3-16
3.18 O XYGENSYSTEM ....................................................................................................................3-17
3.19 S ERVICE INSTRUCTIONS ..........................................................................................................3-17
3.20 L IST OF SPECIAL TOOLS ...........................................................................................................3-17
4. AIRWORTHINESS LIMITATIONS...........................................................................................4-0

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4.1 G ENERAL ................................................................................................................................4-1
4.2 S ERVICE T IME ..........................................................................................................................4-1
4.3 INSPECTIONS.......................................................................................................................4-1
4.4 CHECK OUT PROGRAM........................................................................................................4-1
4.5 INSPECTION RESULTS..........................................................C HYBA ! Z ÁLOŽKA NENÍ DEFINOVÁNA .
4.6 OBLIGATORY INSPECTIONS ................................................................................................4-2
4.7 L IFE L IMITED C OMPONENT S ECTION ............................................................................................4-2
5. CENTER OF GRAVITY ..........................................................................................................5-0
5.1 C ENTER OF G RAVITY POSITION ...................................................................................................5-1
5.2 P AYLOAD R ANGE ......................................................................................................................5-3
6. INSTRUCTIONS FOR REPAIRS.............................................................................................6-0
6.1 CHECKLIST...........................................................................................................................6-1
6.1.1 General ...............................................................................................................................6-1
6.1.2 WING..................................................................................................................................6-1
6.1.3 FUSELAGE .........................................................................................................................6-2
6.2 S TRUCTURE OF C OMPONENTS ....................................................................................................6-3
6.3 MATERIALS ..........................................................................................................................6-4
6.4 T YPE OF WAVES .......................................................................................................................6-5
6.5 B ASIC T ECHNIQUES AND T OOLS .................................................................................................6-6
6.5.1 Fiberglass-Hard foam-Sandwich Skin....................................................................................6-6
6.5.2 SOLID FIBERGLASS SKIN REPAIR...................................................................................6-12
6.5.3 Paint Job :.........................................................................................................................6-13
6.5.4 Extra Equipment ................................................................................................................6-14
6.5.5 Tools.................................................................................................................................6-15
7. INSERTED SUPPLEMENTS...................................................................................................7-0

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0.1 List of Effective Pages
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0.2 Record of revisions
Any revision of this Manual 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 left hand margin, and the Revision No. and the date will be
shown onthe bottom left hand of the page.
Rev.
No.: Affected Section Affected Page Date of Issue Approval
Date of
approval
Date
Inserted
Signature

T Te ec ch hn ni ic ca al l D De es sc cr ri ip pt ti io on n, , O Op pe er ra at ti in ng g, , M Ma ai in nt te en na an nc ce e a an nd d R Re ep pa ai ir r M Ma an nu ua al l
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Date of Issue: 08/14
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1. . B BA AS SI IC C T TE EC CH HN NI IC CA AL L D DA AT TA A

T Te ec ch hn ni ic ca al l D De es sc cr ri ip pt ti io on n, , O Op pe er ra at ti in ng g, , M Ma ai in nt te en na an nc ce e a an nd d R Re ep pa ai ir r M Ma an nu ua al l
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1.1 Basic Technical data
Wing
Span....................... 18 m................... 59.06 ft
Wing area.............. 11.8m
2
............... 127.01 ft
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Aspect ratio........... 27.43
Fuselage
Length.................... 6.79 m ............... 22.28 ft
Width...................... 0.62 m ............... 2.03 ft
Height .................... 1.48 m ............... 4.86 ft
Cockpit height....... 0.83 m ............... 2.72 ft
Horizontal Tail Unit
Span....................... 2.5 m.................. 6.89 ft
Area....................... 0.99 m
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.............. 10.66 ft
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Aspect ratio........... 6.33
Vertical Tail Unit
Height .................... 1.25 m ............... 3.77 ft
Area....................... 1.05 m
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.............. 9.58 ft
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Aspect ratio........... 1.52
Landing gear
Main wheel................... ..................5,00x5
Tail wheel..................... ..............210x65

T Te ec ch hn ni ic ca al l D De es sc cr ri ip pt ti io on n, , O Op pe er ra at ti in ng g, , M Ma ai in nt te en na an nc ce e a an nd d R Re ep pa ai ir r M Ma an nu ua al l
Document No.: 304S/MM
Date of Issue: 08/14
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1.2 Technical Description
The GLASFLÜGEL 304 S is single seat 18m flapped sailplane of 18m FAI
class, constructed from fiber-reinforced plastics (FRP), featuring camber-
changing flaps and a T-tail (with fixed horizontal stabilizer and elevator)
1.2.1 Fuselage
The fuselage tapers behind the wing, the faired-in one piece canopy is hinged
forward. Canopy jettisonmechanism incorporates the Rögger pivot hook.
The fuselage shell is pure CFRP shell reinforced with Carbon Aramid hybrid
fabrics in the pilot area, therefore capable of large energy absorption. The pilot
is seated in a semi-reclining position. The landing gear is retractable and
damped.
A C.G. release is fitted as standard, and an aerotow nose release can be fitted
on request.
1.2.2 Wing
The four-piece wing is cantilever and double trapezoidal. Removable wing
extensions are optional. It is constructed as a CFRP-Foam-Sandwich shell with
extruded spar caps of parallel carbon fibers and shear webs of reinforced
GFRP-Foam-Sandwich. Airbrakes are of the Schempp-Hirth type. Two integral
water ballast tanks carry a total volume of 194 liters (aprox. 42 UKgal, 51
USgal).
1.2.3 HorizontalTail Unit
The horizontal tailplane has a stabilizer and elevators. Trimming is by means of
a spring on the control drive. The stabilizer is of GFRP-Foam-Sandwich
construction.
1.2.4 VerticalTail Unit
The fin is similar to the stabilizer of GFRP-Foam-Sandwich Shell construction.
The rudder is of the CFRP construction.
1.2.5 Water ballast system
The water ballast system is controlled by a lever on the starboard side of the
cockpit. A Bowden cable connects the operating lever in the cockpit to a
torsional drive (in the fuselage center) which, on rigging the wing panels,
automatically hooks up to torque tubes actuating the ring tank dump valves.
These tubes are rotated to their "closed" position by spring force.
The operating lever in the cockpit runs over a half circle and the opening of the
valves can be locked in the each position from closed to fully opened positions.
The operating lever also drives the valve of the drainable tail ballast tank.
The tanks are located in the wings and have a total volume of 194l (aprox. 42
UKgal, 51 USgal). The ballast tanks are integral, each wing tank is divided into
2 sections located in lead space of the wings.

T Te ec ch hn ni ic ca al l D De es sc cr ri ip pt ti io on n, , O Op pe er ra at ti in ng g, , M Ma ai in nt te en na an nc ce e a an nd d R Re ep pa ai ir r M Ma an nu ua al l
Document No.: 304S/MM
Date of Issue: 08/14
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1.3 Sailplane systems
1.3.1 Control systems in the fuselage
Elevator, ailerons, and air brakes control systems inthe fuselage
FIG.1