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Aviation History
1946
1946 - 1745.PDF
SEPTEMBER 5TH, 1946 FLIGHT 213 I THE LOCKHEED SERVODYNE necessary to reduce the losses and operating loads to the very minimum possible. Originally a control valve of the opposed-poppet type was used, and this valve, as shown in Fig. 4, pro- vides extremely sensitive control without work- ing to close tolerances. In practice, movements of less than 1 / 1,000th of an inch are sufficient to obtain motion in either direction. On the other hand, the design involves the use of springs to hold the valves on their seats, and it has been found that these loads, even though small, are not acceptable. Therefore, a piston-type slide valve, as shown in Figs. 1, 2 and 3, has been substi- tuted, its design being based on the injection-pump tech- nique developed for the manufacture of the pumping elements of the Mark VI Pump. By this means piston -overlaps of less than 0.005m have been successfully used. These, whilst not fundamentally as accurate as the previous Fig- 3- The jack contracting, with pressure on the small side only. Fig. 4. The opposed-poppet type of valve provides extremely sensitivecontrol and was used originally, but it has now been replaced by a piston- type slide valve. design, are, nevertheless, of an order which cannot be detected manually. The application of the Servodyne to a control is a simple matter, involving only the interruption of the control-run at one point, and the provision of a reaction point on the airframe adjacent to it. It was recognized early in the development of the Servo dyne that a measure of "feel back" would be required. This "feel back " can be denned as a percent- age of the operating load that it provided manually. Initially it was provided by adjust- ing areas of the valve mechanism to give out- of-balance reaction, but it was found that this arrangement could not readily be altered to suit individual requirements, and an alternative method was adopted. In this arrangement, how- ever, the relative position of the attachment point of the control load determines the percentage of "feel back," which can be varied, if neces- sary during operation, from o to 100 per cent. The Auxiliary Air Force Honorary Air Commodores and Commanding Officers Appointed SOME months ago the Government stated its intentionto re-establish the Auxiliary Air Force and gave anoutline of its composition and organization. The Air Ministry has now announced the officers appointed to command 16 of the 20 A.A.F. squadrons. In the list below we give first the number and name of each squadron, followed by the name of the Honorary Air Commodore and the Commanding Officer. 500 (County of Kent): Air Comdre. The Rt. Hon. Anthony Eden, M.C., M.P. ; Sqn. Ldr. Patrick Green, O.B.E., A.F.C. 502 (Ulster): Air Comdre. The Most Hon. Marquess of Londonderry, K.G., P.C., M.V.O., T.D.; Sqn. Ldr. W. H. McGiffin. 504 (County of Nottingham): Air Comdre. The Rt. Hon. Lord Mottistone, P.C., C.B., C.M.G.. D.S.O.; Sqn. Ldr. A. H. Rook, D.F.C., A.F.C. 600 (City of London): Air Comdre. The Rt. Hon. Sir Archibald Sinclair, Bt., K.T., C.M.G.; Sqn. Ldr. T. N. Hayes, D.F.C. 601 (County of London): Air Comdre. The Rt. Hon. Lord Riverdale, G.B.E., J.P., LL.D.; Sqn. Ldr. The Hon. Max Aitken, D.S.O., D.F.C.,.M.P. 602 (City of Glasgow): Air Comdre. His Grace The Duke of Hamilton and Brandon, P.C., G.C.V.O., A.F.C.; Sqn. Ldr. M. Robinson, A.F.C. 603 (City of Edinburgh): Air Comdre. Sir W. Y. Dar- ling, C.B.E., M.C., D.L., J.P., M.P. ; Sqn. Ldr. G. K. Gilroy, D.S.O., D.F.C. 604 (County of Middlesex): Air Comdre. The Rt. Hon. Viscount Templewood, P.C., G.C.S.I., G.B.E., C.M.G., D.L., J.P. ; Sqn. Ldr. J. Cunningham, D.S.O., D.F.C. 607 (County of Durham): Air Comdre. The Hon. W. L. Runciman, A.F.C. ; Sqn. Ldr. J. R. Kayll, D.S.O., D.F.C. 609 (West Riding): Air Comdre. The Rt. Hon. The Earl of Harewood, K.G., G.C.V.O., D.S.O., T.D. ; Sqn Ldr. P. A. Womersley, D.F.C. 610 (County of Chester): Air Comdre. Sir Wm. Bromley Davenport, K.C.B., C.M.G., C.B.E.. D.S.O., T.D. ; Sqn. Ldr. P. G. Lamb, A.F.C. 611 (West Lancashire): Air Comdre. G. L. Pilkington; Sqn. Ldr. W. J. Leather, D.F.C. 612 (County of Aberdeen): Air Comdre. Sir Ian Forbes- Leith, Bt. ; Sqn. Ldr. R. R. Russell. 613 (City of Manchester): Air Comdre. The Rt. Hon. The Earl of Derby, K.G., P.C., G.C.B., G.C.V.O., T.D. ; Sqn. Ldr. J. S. Morton, D.F.C. 615 (County of Surrey): Air Comdre. The Rt. Hon. Winston Churchill, O.M., C.H., M.P. ; Sqn. Ldr. R. G. Kellett, D.S.O., D.F.C. 616 (South Yorkshire): Air Comdre. His Grace The Duke of Portland ; Sqn. Ldr. K. Holden, D.F.C. The names of officers appointed to command the remain ing four A.A.F. squadrons will be issued later. Their Honorary Air Commodores are: No. 501 (County ot Gloucester), Air Chief Marshal H.R.H. The Duke of Gloucester, K.G., P.C, K.T., K.P., G.C.B., G.C.M.C, G.C.V.O. ; No. 605 (County of Warwick). Sir Wm. Lind- say Everard, D.L., J.P. ; No. 608 (North Riding) The Rt. Hon. Viscount Swinton, P.C., G.B.E., C.H., M.C. ; No. 614 (County of Glamorgan), R. Cadman, D.L. When the individual squadrons are ready to deal with applications from recruits (who must be officers and men who have served with the Royal Air Force) further announcements will be issued from time to time through the Press. A 1/ A.T.A. FUND N estimate of needs calculated at £26,000 tor the A.T.A.Benevolent Fund was quoted in the treasurer's report at the fifteenth meeting of the fund's general committee. Thereport added that other cases had since arisen, but it was confidently believed that the fund would be found to havesufficient money to meet its liabilities.
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