FlightGlobal.com
Home
Premium
Archive
Video
Images
Forum
Atlas
Blogs
Jobs
Shop
RSS
Email Newsletters
You are in:
Home
Aviation History
1923
1923 - 0389.PDF
JULY 12, 1923 --— • ; • • t * • \ ^^- Gap °m \ ^\ \ ^ I TPFffiS Section ul'th extensible hxituty Rcre/otl and Slotted r~lafj ~ F/G./6. ^ Cap en ———r, 1 slot of the extensible form gives a maximum Ky of -71 at 16°, and with the slotted flap at an angle of 20° •946 is obtained at 16°. The maximum L/D of the basic section is 17-2, with front slot open 14, and with slotted flap 9-00. " The rear slot plays a considerable part in regard to maximum lift, and always tends to increase the lift. This increase can be of varying orders, and depends mainly on the formation of the rear slot. " The difference in centre of pressure movements with slot closed and slot open is of negligible quantity. By moving down the flap a backward movement of centre of pressure THE ROYAL London Gasclte, June 26, 1923 Memorandum Wing Commander R. H. T. Jobson relinquishes his temporary commissionon ceasing to be employed ; June 1. Erratum London Gazette of lane 19, 1923 (FLIGHT, page 355).—For E. D. Cummings,D.F.C., read E. D. Curamings, A.F.C. London Gazette, June'JS, 1923 Reserve of Air Force Officers Class A. The following are granted commns. on probation in General Duties Branch in ranks stated, with effect from the dates indicated : — Flying Officer.—A. K. Bamber (June 22). Pilot Officers—-W. R. Bannister (June 29) ; D. C. Evemy (June 29). occurs, which would be almost twice as great if the extensible form of auxiliary aerofoil had not been adopted. " A very notable feature of the results on RAF/15 is that that maximum increase in lift is obtained at an angle of only 1° in excess of the basic section, so that its application to any standard machine is possible." Control of Slotted Wing Machines " One very important application of the slotted wing lies in the direction of obtaining increased lateral control at the slow speeds of landing and taking-off. With the single front slot only full lateral control can, of course, be obtained in the ordinary manner, there being no diminution of control effect such as is encountered when an increase in life coefficient is obtained by the use of the flaps alone. With the slotted flaps, particularly with high-lift sections, an increase in rolling moment is obtained without a corresponding increase in yawing moment. This increase can be of a very high order, in some cases double the control usually obtained at large angle of incidence, with very little increase in yaw. " This can be still further improved, if necessary, by differ- ential operation of the ailerons, as proposed and carried into effect by Captain De Havilland. Still more important, however, than these existing features is the use of the front slot in conjunction with the ailerons for the prevention of burbling on the wing which is lower and causing the high wing to burble. By the manipulation of the slot or parts connected therewith a very big rolling moment can be obtained, with an actual decrease in yawing moment, compared with existing controls at slow speeds. In some cases the yawing moment can actually be negative in value. The control feature is a most important one, as adequate control at the slow speeds obtained is necessary if the full value of the increased lift coefficient is to be obtained." AIR FOft£E London Gazette, July 3, 1923General Duties Branch The following are granted permanent commissions as Flying Offrs,, witheffect from dates indicated. Gazettes of dates indicated in brackets, appointing them to short service commns., are cancelled :—C. W. Hill ; Dec. 6, 1920(Dec. 17, 1920). J. A. McDonald;; Dec. 12, 1919 (Dec. 12, 1919): C. L. Lowe, D.F.C., is granted a short service commn. as a Flying Officer with effect from,and with seny. of, June 25. Pilot Offr. F. Beesley to be Flying Offr. ; July 2. The Following Pilot Offrs. are confirmed in rank (June 1) :—H. M. Kenyon,B. H. Shaw, J. M. Darroeh. The short service commn. of the following Pilot Offr. is terminated on cessation of duty :—D. C. D. Stephen ; June 30.Flying Offr. R. B. Sutherland, D.F.C., is transferred to the Reserve, Class A ; July 2. Stores BranchFlying Offr. R. T. Carter is transferred to Stores Branch for account duties from General Duties Branch ; June 14. MemorandumThe permission granted to Lieut. G. H. Hall is withdrawn on his enlistment; June 12. ROYAL AIR FORCE INTELLIGENCE General Duties BranchSquadron Leaders : R. Collishaw, D.S.O., O.B.E., D.C.S., D.F.C., to R.A.F. Depot. 27.5.23, pending disposal on transfer to Home Estab. V. Gaskell-Blackburn, D.S.C., A.F.C., to Egyptian Group, Headquarters, Egypt. 14.6.23. Flight Lieutenants : C. Pilkington, A.F.C., to School of Army Co-operation,OldSarum. 1.7.23. J. H. O. Jones to Headquarters, Coastal Area. 29.6.23. Flying Officers : R. J. Copley to No. 5 Armoured Car Company, Iraq.19.4.'23. E. K. Blenkinsop to R.A.F. Depot (Non-effective Pool). 2.6.23, on transfer to Home Estab. W. J. Richards to No. 5 Witg Headquarters,Biggin Hill. 27.6.23. A. S. Godley to R.A.F. Depot (Non-effective Pool). 4.6.23, on transfer to Home Estab. L. Butler to Night Flying Flight, BigginHill. 1.7.23. H. O. Brown, M.M., to Aeroplane Experimental Estab., Martlesham Heath. 9.7.23. F. W. Foster, D.F.C., D.S.M., to R.A.F. Base,Leuchars (No. 441 Flight). 21.5.23. Pilot Officer : T. J. Desmond to No. 6 Squadron, Iraq. 8.6.23. Stores and Accountants Branch-Flight Lieutenants Stores) : W. C. Green to Headquarters, Coastal Area. 2.7.23. R. A. Young to No. 1 School of Technical Training (Boys), Halton.2.7.23. Flying Officers (Stores) : R. D. Lambert to R.A.F. Depot (Non-effectivePool). 19.5.23, on transfer to Home Estab. J. R. Gardiner to No. 32 Squadron, Kenley. 9.7.23.Flying Officer Accountant): R. T. Carter to Headquarters, R.A.F., Cranwell. 2.7.23.Pilot Officer (Accountant): R. W. Freeman to Stores Depot, Egypt. 22.6.23. Medical BranchFlight Lieutenants (Medical) : D. McLaren, M.B., to Station Commandant, Iraq. 21.5.23. A. Briscoe, M.B., to Basrah Combined Hospital, Iraq.30.5.23. <$> IN PARLIAMENT Commercial Air Service and Utilisation for DefenceMR. BATEY on July 2 asked the Secretary of State for Air if he will state the number of men trained in the art of flying with the commercial air serviceand who could be utilised for the purposes of defence if it became necessary ; and the number of air machines now used for the commercial air service thatcould be utilised for defence ? Sir S. Hoare : As regards the first part of the question, whilst 704 civilianpilots' licences have been issued during the last few years, only 104 of these licences are still current. As regards the second part of the question, thereare 30 airworthy machines on the civil register which could be utilised for operational purposes in emergency, but I would add, in qualification of thisfigure, that the variety of types would cause difficulties in keeping the machines efficient under service conditions. In addition there are 50 airworthy machineswhich could be used for training but not for operations. International Air CongressSIR H. BRITTAIN on July 5 asked the Secretary of State for Air whether he is able to make any statement with regard to the utility of the InternationalAir Congress recently held in London ; and whether it has been decided where the next gathering shall be held ? The Secretary of State for Air (Lieut.-Col. Sir Samuel Hoaxe) : PreviousInternational Air Congresses have been held in Paris, at Chicago, at Milan, and Nancy. The Congress held in London last week, therefore, continued thepolicy of maintaining international amity in the air, and afforded a valuable opportunity for the discussion of technical papers connected with the scienceand practice of aeronautics. I am most grateful to the members of the various committees who were responsible for the arrangements. It seems probablethat the next International Air Congress will be held m Brussels at the invitation of the Belgian Government, , .. .' - -, . 389
Sign up to
Flight Digital Magazine
Flight Print Magazine
Airline Business Magazine
E-newsletters
RSS
Events
