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Aviation History
1922
1922 - 0660.PDF
NOVEMBER 9, 1922 a good balance having, evidently, been struck between e.g. position, dihedral and. side area. * * * IT is of interest to note that last year M. Peyret won first prize in a competition for model gliders, his model being practically an exact scale model of the present Peyret- Maneyrol glider. It would thus appear that quite a good deal may be learned about gliders from experiments with models. * * * ASKED whether he had thought of putting a small engine in his glider, M. Peyret answered that quite likely he will do so later on. A preliminary estimate indicates that the machine will fly level on approximately 5 b.h.p., so that if an engine of about 10 b.h.p. were fitted there should be ample reserve for getting off. Such a machine should be extremely economical to run, as it would probably do about 50 miles to the gallon of petrol. * * * IT would also appear that the tandem monoplane, although somewhat inefficient, might be more easily made" fool proof " than the more orthodox types. Usually the very small machine is sensitive on its controls, and is somewhat tricky to handle. It seems likely that the tandem type might possess certain advantages in this respect, and if that should prove to be so, the slight loss in efficiency which attends the tandem arrangement would not be a high price to pay for a machine which even the novice could soon learn to handle with confidence. At any rate, the subject is one worthy of consideration. * * * WHILE on the subject of the Peyret-Maneyrol glider, we wish to point out two errors in our issue of October 26. In the full-page scale drawings on p. 622 the scale in the lower right-hand corner is wrong. The dimensions on the draw ings, and the drawings themselves, are correct, but by mistake the scale of feet put on the sheet afterwards was too small. The second error occurs in the control diagram on p. 623, Here the control cables to the rear wing flaps should cross, i.e., the cables from the port levers in the cockpit should cross over laterally to the cranks of the starboard rear flaps, and vice versa. As shown, the action would be correct for elevator control, but when used as ailerons the flaps on the rear wing would move in the wrong direction. * * * MR. J. F. DEEMING, of 38, Albert Road, Hale, Cheshire, would like to get in touch with anyone in the Altrincham district interested in gliding, with the object of forming a gliding club and carrying out experimental work. Mr. Leem- ing has already built four gliders, and is at present at work on a fifth, a monoplane of 36 ft. span. * * * As a result of several enquiries from readers, we publish below a table giving the position of the centre of pressure (expressed as percentage of chord) for various angles of incidence of the Gottingen No. 441 wing section. It will be seen that the c.p. is unusually far back, the most forward position reached (at 160 incidence) being 37 per cent, of the chord, from the leading edge. At —30 the c.p. is 61 per cent, of the chord from the leading edge. A. of I. C.P. A. of I. C.P. —3 •• — 2 . . 0 2 4 .. 6 . .. 61 •• 57 •• 51 .. 46 • • 43 .. 41 8 .. 10" . . 12 . . 14 .. 16 .. .. 40 •• 38 •• 37 •• 37 •• 37 H H H H NOTICES TO AIRMEN Charges for Accommodation, etc., for Civil Aircraft at Government Civil Aerodromes, R.A.F. Aero dromes, and Seaplane Stations. 1. With reference to Article 7 (5) of the Air-Navigation Order, 1922, the dues to be charged at Government Civil Aerodromes R.A.F. Aerodromes and Seaplane Stations are as follows :— A. A ccommodaiion. The charge for accommodation will be based on the floor space occupied, i.e., the product of span and overall length. With folder aircraft the span will be taken as the overall iwidth when folded. Charges will be as follows :— 8 hrs. or less. £ *• d. 2 6 Up to 24 hrs. £ *• d. 050 1 o 1 10 Class A-—Small type, less than 900 sq. ft. o Class B.—Medium type over 900 sq. ft., but not exceeding 1,800 sq. ft. .. o Class C.—Large type, over 1,800 sq. ft., but not exceeding 3,600 sq. ft. .. 1 Class D.—Large type, over 3,600 sq. ft. 1 Monthly Rates.—Accommodation for monthly periods will be at rates of £5, ^10, ^20 and ^30 respectively for the above classses of aircraft. Any accommodation so reserved, but not made Use of, will be available for hire to other aircraft. No refund will be made to the monthly lessee, unless he is prevented by the re-allocation of the reserved accommodation from obtaining accommodation, in which case such propor tionate refund will be made as in the opinion of the Secretary of State appears reasonable. Payment for accommodation at monthly rates must be made in advance. The hire of premises under special agree ment may be arranged upon terms which will be decided by the Air Ministry. The provision of accommodation at R.A.F. Aerodromes and Seaplane Stations will be subject to the exigencies of the Service. B. Landing Fees. These will be in respect of the cost of maintenance of the aerodromes, use of landing lights and beacons and supply of navigational information. The charges will include ordinary attendance, e.g. guiding machines, starting propellers, re-fuelling, etc. (For pushing machines with stopped engines any considerable distance, charges will be made in accordance with 3(0) below.) At aerodromes where no attendance is available the charges will remain the same. The charges for single landing will be :— Class A.—Small type, 2s. 6d. Class B.—Medium type, 5s. Classes C and D.—Large type, 10s. Aircraft with more than two engines, 15s. No extra landing fee will be charged in respect of test flights before departure. 2. The Air Ministry, its servants or agents, will not be liable for loss cr damage by accident, fire, flood, tempest, explosion or other cause to aircraft, or to pilots, engineers or other personnel thereof, or to any passengers, goods or mails carried therein landing at or accommodated in any Govern ment Civil Aerodrome, R.A.F. Aerodrome or Seaplane Station from whatever cause arising, even if such loss or damage arises through negligence of the Air Ministry's servants or agents. 3.—(a) Attendance on civil aircraft by personnel of the R.A.F. or of Government Civil Aerodromes, other than the ordinary attendance included in the landing fees, will be charged for on the basis ofTabour and time. Such personnel will be available to assist civil aircraft only to a limited extent, and at certain aerodromes to be specified by the Secretary of State. (b) Stores, such as fuel, oil, tyres, etc., and any standard spares that may be available, will be supplied to civil aircraft by the R.A.F. wherever possible, to meet emergency demands, and when no other source of supply is available. Such supplies will be charged for at the current retail prices. (c) Subject to Service exigencies, repairs may be carried out by personnel of the R.A.F. or of Government Civil aerodromes for civil aircraft in emergency when no other arrangements can be made. Repairs will be confined to such work as will enable the aircraft to proceed by air within a short period. No repair which will exceed a cost of £10, exclusive of the cost of stores and spares supplied, will be undertaken before an estimate has been made and submitted to the owner of the aircraft. Repairs carried out by personnel of the R.A.F. or of Government Civil Aerodromes will be carried out to the satisfaction of the responsible inspecting officer, but no responsibility as to the airworthiness of the aircraft shall rest on the R.A.F. or on the Government Civil Aerodrome staff or on the Air Ministry. (d) Where R.A.F. workshops are available but no R.A.F. personnel can„be spared, arrangements will be made, subject 660
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