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Aviation History
1921
1921 - 0557.PDF
AUGUST 18, 1921 Fairey machines, "however, wing flap gear is incorporated, and this necessitates some additional control organs. Briefly speaking, the Fairey camber gear consists in pulling down or raising the entire trailing portion of the wings, from the rear spar to the trailing edge, at the same time retaining the differential movement of the ailerons. The manner of accomplishing this is indicated in one of our diagrams. The trailing edge of the planes is hinged throughout the entire length, and the wiring so arranged that the trailing edge is pulled down against the action of rubber cords. A reference to the diagram will make the principle clear. Mounted on a left and right hand worm in the fuselage are two internally threaded fittings which are caused, by rotation of the worm, to travel inwards or outwards. To these fittings are attached the inner ends of the flap cables, which run over pulleys on the lower front spar and from these back to the lower plane flap cranks. Thus when the worm is so rotated that the fittings travel inwards, the cables are pulled inwards as well, pulling down the lower plane flaps. From these, cables run to the trailing edges of the upper flaps and to the upper cranks, pulling down the top flaps with the lower ones. From the upper flap cranks cables run over puileys on the top front spar, and back to rubber cords attached at their other end to the top rear spar. It will be seen that these rubber cords take the place of return cables, pulling up the flaps when the positive cables are paid out. The ailerons are pulled down with the rest of the trailing edge by means of cables passing from the pulleys on the worm fittings to the aileron cranks on the lower plane. The lateral travel of these pulleys does not affect, or to a very small extent only, the length of the diagonal cable operating the aileron. It will be seen that although the ailerons are pulled down or up with the flap, their differential action is not interfered with, so long as the flaps are not down to the limit of their travel. The worm in the fuselage is operated by means of a wheel on the star- board side of the pilot's cockpit. In addition to the camber wheel, there is another and smaller wheel operating the setting of the tail plane so as to maintain the trim of the machine. In our diagram this wheel has been omitted for the sake of clearness. The Fairey Patent camber gear is extremely simple, and in practice it has been found to give very good results, materially lowering the landing speed of the machine. We have no data as to the actual lift coefficient attained with this gear, but an approximate estimate indicates a maximum lift coefficient of close upon 0-9 absolute. Consequently a fairly high wing loading can be employed without raising the alighting speed to a prohibitive figure. The following is a brief specification of the machine : Span 46 ft. 1J in. Chord 5 ft. 6 ins. Gap 5 ft. 7 ins. Overall length 36 ft. 1 in. Area of main planes, 500 sq. ft. Weight fully loaded 5,050 lbs. Petrol capacity 105 gallons. Oil capacity 8 gallons. Useful load 1,060 lbs. Performance: Top speed 96 knots. Climb 5,000 ft. in 6 mins. 40 sees. Ceiling 17,000 ft. ROYAL AIR FORCE INTELLIGENCE Appointments.—The following appointments are notified :— Wing Commander G. F. Pretyman, D.S.O., O.B.E., from R.A.F. School (India) to R.A.F. Depot (Inland Area). Date 3°.7-21. Sqdn.-Ldr. A. A. B. Thomson, M.C., A.F.C., from Inter- Allied Aeronautical Commission of Control (Austria) to Inter- Allied Aeronautical Commission of Control (Hungary). Date 25.7.21. Sqdn.-Ldr. R. M. Bayley, D.F.C., from Headquarters, Coastal Area, to command R.A.F. Base (203 Sqdn.) (Coastal Area). Date 15.8.21. Sqdn.-Ldr. E. L. Conran, M.C., from Headquarters, Middle East Area, to Half-pay List. Date 24.6.21. Sqdn.-Ldr. H. A. R. Aubrey, O.B.E., M.C. The appoint- ment notified on 28.7.21, from Air Ministry (D. of E.) to R.A.F. Depot, with effect from 1.8.21, is cancelled. Sqdn.-Ldr. L. Auker, O.B.E. (Stores), from No. 4 Stores Depot (Inland Area), to command Packing Depot, Inland Area. Date 30.7.21. Sqdn.-Ldr. C. C. Darley, from Headquarters, Inland Area to command School of P.T. and Drill, R.A.F. Depot, Uxbridge. Date 25.8.21. Sqdn.-Ldr. R. B. Maycock, O.B.E., from Air Ministry (D.O.I.) to No. 230 Sqdn. (Coastal Area) for flying duties. Date 3.9.21 (instead of 6.8.21). Sqdn.-Ldr. L. Tomkinson, D.S.O., A.F.C., from R.A.F. Depot (Inland Area) to Air Ministry (D.O.I.) for staff duties. Date 3.9.21 (instead of 6.8.21). Sqdn.-Ldr. W. Millett (Stores), from No. 3 Group Head- quarters (Inland Area) to R.A.F. Depot (Inland Area). Date 25.7.21. Sqdn.-Ldr. J. T. Babington, D.S.O., from Inter-Allied Aeronautical Commission of Control (Germany) to R.A.F. Depot (Inland Area). Date 1.8.21. Sqdn.-Ldr. S. C. W. Smith, D.S.O., from No. 2 Flying Training School (Inland Area) to Inland Area Aircraft Depot, for technical (engineer's) duties. Date 1.8.21. Group-Captain R. Gordon, C.B., C.M.G., D.S.O., from Half-pay List to R.A.F. Depot (Inland Area) pending em- barkation overseas. Date 16.8.21. Group-Captain C. S. Burnett, C.B.E., D.S.O., from No. 7 Group Headquarters (Inland Area) to Half-pay Lisc. Date 12.7.21. Squadron-Leader F. N. Smartt, M.B., B.A. (Medical), from Headquarters No. 11 (Irish) Wing to R.A.F. Depot (Inland Area. Date 25.8.21. Squadron-Leader G. W. Williamson, O.B.E., M.G., from Inland Area Aircraft Depot to Aircraft Depot (India) for Technical duties. Date 8.7.21. Squadron-Leader J. Rylands (Stores) from Air Pilotage School (Cadre), (Inland Area) to No. 1 Stores Depot. Date 28.8.21. Wing-Comdr. I. G. V. Fowler, A.F.C, from No. 7 Group Headquarters (Inland Area) to Headquarters, R.A.F., India, for Technical Staff duties. Date 5.8.21. ' - .:-•-^ ,;;:;•> 557 Sqdn.-Ldr. R. P. Whitehead, from Aircraft Depot (Coastal Area) to R.A.F. School, India, for Technical duties. Date 5.8.21. Sqdn.-Ldr. H. E. Whittingham, M.B., D.P.H., D.T.M., to R.A.F. Central' Hospital on ceasing to be attached to Head- quarters, Mediterranean Group. Date 22.7.21. Sqdn.-Ldr. A. F. A. Hooper, O.B.E., from No. 10 Group Headquarters (Coastal Area), to No. 1 Flying Training School (Inland Area). Date 1.9.21. Sqdn.-Ldr. G. H. P. Padley, from Boys' Wing (Cranwell), to No. 2 Flying Training School (Inland Area) for Technical (Engns.) duties. Date 10.9.21. Sqdn.-Ldr. B. P. H. de Roeper. A.F.C., from Central Flying School (Inland Area) to School of Photography (Inland Area). Date 15.8.21. Flight-Lieut. J. A. Macnab, to R.A.F. Base (205 Sqdn.) (Coastal Area), on ceasing to be attached to No. 230 Squadron. Date 25.8.21. Flight-Lieut. C. E. H. C. Macpherson, to. No. 4 Flying Train- ing School (Middle East Area) on ceasing to be attached to Headquarters, Middle East Area. Date 15.6.21. Flight-Lieut. J. S. Browne, A.F.C., from No. 216 Squadron (Middle East Area) to Aircraft Depot, Egypt. Date 5.7.21. Flight-Lieut. L. A. K. Butt, from No. 4 Flying Training School (Middle East Area) to Palestine Group Headquarters. Date 14.6.21. Flight-Lieut. E. W. Craig, MX., M.B. (Medical) from No. 4 Squadron (Inland Area) to No. 2 Flying Training School (Inland Area). Date 12.8.21. Movements, etc.—No. 45 Squadron moved from Helwan to Almaza on July 11, 1921. No. 202 Squadron, Alexandria, ceased to exk-t with effect from May 16, 1921. The Headquarters of No. 29 Group moved from North Queensferry to Donibristle, Fifeshire, on June 21, 1921. R.A.F., Cranwell.—The Royal Air Force units at Cran- well have been re-organised as follows :— a) Headquarters, R.A.F., Cranwell. (b) R.A.F. Cadet College, Cranwell : (i) Ground Wing ; (ii) Flying Wing. (c) Bo_ys' Wing, R.A.F., Cranwell. (d) R.A.F. Cadet College Band, Cranwell. . ' (e) R.A.F. Hospital, Cranwell. The Air Officer Commanding, Royal Air Force, Cranwell, is Commandant of the R.A.F. Cadet College, and commands all units at Cranwell. Aeronautical Commission of Control, Hungary.—An Aeronautical Commission of Control for Hungary has been v formed with effect from August 1, 1921. Wing Commander J. N. Fletcher, A.F.C., is chief of the British Delegation. The Headquarters are at Budapest. The Aeronautical Com- mission of Control for Austria ceased to exist from August 1, 1921. Relinquishments of Stations.—The following Service stations have been relinquished or passed for disposal :— Blandford, East Fortune (Buildings), Barlow.
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