Volume 16 No 1 Feb 1965.pdf - Lakes Gliding Club

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II'-to have a very disturbing influence, thishas been transferred to below the wingjunction, and the pressure tube is at thetip of the T-tail. This T configurationwas chosen because in aircraft with highaspect ratios it gives the lowest dragcompared with other types of tail. Theextra weight of the T-taH does not matterin a sailplane of these dimensions.The flaps occupy 17% of the chord;the hinge is at the lower surface of thewing and airflow through the slit is prevented.The ailerons occupy 25 % chordand move in conformity with the flaps.The flap movement ranges from about10" down in slow flight to about 10"up at extreme high speed. The angle ofincidence of the wing and fuselage donot alter with changes of speed.Speed when circling in thermals liesbetween 70 and 80 km./h. (38-43 kt.).Time for 45" bank to 45" opposite bankis 5 seconds.In the construction of the machineb3lsa-reinforced glassfibre sandwich was10used, as developed by the Brunswickgroup.DataSpan. 17.8 m. (58 ft. 5 in.).Length, 735 m. (24 ft. I in.).Wing area, 12.8 sq. m. (138 sq. ft.).Aspect ratio, 24.Wing section: inner, F.X, 62-K-131;outer, EX. 60-126.Empty weight, 282 kg. (622 lb.).All-up weight (max.). 410 kg. (904 lb.).Wing loading (max.), 32.0 kg./sq. m.(6.55 Ib./sq. ft.).Safety factor, 10.Max. permissible speeds: calm air,rough air and aero-tow, all 200 km./h.(108 kt.); winch launch, 110 km./h.(59 kt.).Calcalated PenOflDllKeBest gliding angle, about I in 40 atbetween 80 and 100 km./h. (43-54 kt.).Minimum speed, 65 km./h. (35 kt.).Minimum sink at 70 km.jh. (38 kt.),0.5 mls (I ft. 7.7 in. Isec.).***FLYING THE 0-36By GERHARD WAIBELHE machine has shown itself wellT suited for competition flying and,considering its span, has very goodmanoeuvrability. It can be made to perfOlmvery steep turns. It could hold itsown with the K-6 and even climb aboveit in steady flying conditions.The flexible wings take up a largedihedral angle. The chief advantage ofthis great flexibility is that landing joltsand sensitivity to gusts are dampeddown. The whole aircraft behaves as ifsprung, somewhat like a heavy vehicleon the motorway. This, how-ever, hasalso some disadvantages, and the recumbentposture contributes to the fact thatone's sensations are reduced, so thatwhen one enters a thermal, one's perceptionof the ac
its normal position lies very near theground. During the very first flights,owing to our lack of experience, itsometimes happened that the wingswould brush the ground, but apart fromthis there are DO problem5 OD take-offby acro-tow or by winch lauDch.It appears tbat at high speeds thecalculated polars are achieved. In slowflight some improvement was shown tobe needed, due not to the profile butto the fact that some air leaked thr,oughthe airbrake slots.The landing turned out to be surprisinglysimple. The brakes, of whichthere are two pairs altogether, are verygood, although no airflow is possiblefrom below to above through the brakeboxes.The flaps and the new profile haveprovided a definite reserve performance.This means that in almost all weathersituations the D-36 has approximately a15 km./h. greater cruising speed thanthe K-6; this naturally gives it a noteworthylead in a competition. Consequentlyit is difficult with this machineto join a gaggle [German: Sperrholzwolke= plywood cloud], sim:e one iscontinually getting above and ahead.In addition, visibility below aDd behindis poor, so that one easily loses sightof tbe others.It was a great thrill to fly alongsidethe Phoebus. The D-36 mostly gainedheight somewhat, owing to its betterperformance in turns. It was veryinteresting to fly with the Phoebus becauseboth aircraft kept well alongsideat high speeds. But in slow flight thegreater experience of Rudi Lindner gavehim a great advantage.TENTH O.S.T.I.V. CONGRESSHIS congress will be held at South Cerney during tbe World <strong>Gliding</strong> Championships.The provisicnal programme T is:-Wednesday June 2 orThursday June 3(Thursday June 3)Friday June 4Saturday June 5Monday June 7Tuesday June 8Wednesday June 9Thursday June 10Friday June IISatwday June 12Call for PapersTECHNICAL PAPERS are desired onAerodynamics, Structures, AirworthinessDesign Criteria. Instruments, Training,Official Opening of the 10th OSTIV Congress.(Technical sessions).Technical sessions.Technical sessions.Technical se5sicns.Joint Technical and Meteorological sessions.Excursion for OSTlV participants.Meteorological sessions.Meteorological sessions.General Conference and Closing Party.Equipment-Ground Handling and Sailp~aneLaunching.Some suggested subjects are: Results11
Page 1 and 2: SA LP A&GLIDIGFebruary - March 1965
Page 3 and 4: SAILPLANE& GLIDINGOFFICIAL ORGAN OF
Page 5 and 6: 1965 WORLD G,LIDINGCHAMPIONSHIPSHE
Page 7 and 8: FRED SLINGSBY'S RETIREMENTANY are t
Page 9 and 10: D-34(o)D·36Polyt 3Kria7
Page 11: dead into sun, and the haze made VI
Page 15 and 16: well that you should understand how
Page 17 and 18: TESTING A SOVIET DISCOPLANEBy V. IV
Page 19 and 20: cursed. The designer looked despond
Page 21 and 22: SECOND NEW ZEALAND CHAMPIONSHIPSHOO
Page 23 and 24: •Official rest day.three pilots a
Page 25 and 26: 1965 COURSES AT LASHAMHE 196'5 cour
Page 27 and 28: LEE WAVE uGEN" FOR AEROPLANE PILOTS
Page 29 and 30: of the Sheffield gale. The other is
Page 31 and 32: IT wasn't just having to get used t
Page 33 and 34: change, my man," I sa.id grandly, a
Page 35 and 36: outes. It's all a snare and a delus
Page 37 and 38: electrical horizons 'have complete
Page 39 and 40: Finally, the turn-and-slip indicato
Page 41 and 42: 1964 KRONFELD ART EXHIBITION AND196
Page 43 and 44: Loi61U ;nOrder Pi/or Points 1964 Or
Page 45 and 46: RHODESIA'S FIRST 500 KILOMETERSBy E
Page 47 and 48: 2-3~ en154.2'-'5-0 IDID6 0 en~c7
Page 49 and 50: JIy30-40506"0 70 8"0 9"0I I I I, eq
Page 51 and 52: BRITISH GLIDING ASSOCIATION NEWSCHI
Page 53 and 54: wings ar~ lewel. If you can do this
Page 55 and 56: T" T I G" I. 1.111 Y 11 74'0THEKRON
Page 57 and 58: as the squall struck us, about half
Page 59 and 60: about 3,000 feet, at which altitude
Page 61 and 62: TRUE FLIGHT-A FABLEBy M. BIRDOOKING
Page 63 and 64:
iBOOK REVIEW•Great Flights and Ai
Page 65 and 66:
will go on into the foreseeable fut
Page 67 and 68:
I feel that the home-made winch wil
Page 69 and 70:
FOR SALE (contd.)T.3IB, C. of A. fr
Page 71 and 72:
BLACKPOOL AND FYLDEP"e.~enratioll o
Page 73 and 74:
which we had from the Shaw Slingsby
Page 75 and 76:
able piece ef Club equipment was bu
Page 77 and 78:
And still he wasn't satisfied, this
Page 79 and 80:
As usual, Lasham continues to opera
Page 81 and 82:
to his usual standard. The surprise
Page 83 and 84:
Margate before setting off in Sky.)
Page 85 and 86:
CHEVIOTS (Acklington)SINCE our last
Page 87 and 88:
a gliding record. He made his first
Page 89 and 90:
The Boomerang.from a light-weight a
Page 91 and 92:
The Club's order for a Ka-6 waschan
Page 93 and 94:
Lindner, of Teek, with 2,434.2. - A
Page 95 and 96:
A Gliding Holiday io Kentwith the K
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Volume 16 No 1 Feb 1965.pdf - Lakes Gliding Club

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