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Aviation History
1947
1947 - 0207.PDF
FEBRUARY 6TH, 1947 FLIGHT 145 the specific gravity of the fuel is 0.8.From the aircraft tank the fuel is de- livered by a Self-Priming pump througha Vokes low-pressure filter to the two Lucas-Ifield variable-stroke pumps. Onlyone pump is fitted with the overspeed device but the servo system actuates bothpump controls. These are intercon- nected with a single barometric pressurecontrol unit, and deliver the fuel past the pilot's throttle valve and the shut-off cock to a ring manifold. The pump circuits are linked together under thecontrol of a solenoid-actuated valve. In the event of the failure of either pumpor the stoppage or fracture of their pipe lines (as, for example, by enemy action)the pilot will be warned by a sharp drop in r.p.m. Operation of the solenoidvalve from the cockpit will automatic* ally shut off the faulty unit and the re-maining pump takes on the entire duty, which is well within its individualcapacity. From the ring manifold the fuel isdelivered by individual pipes to the Simplex type burner in each combustionchamber. Closure of the shut-off cock automatically opens the dump valve and drains the fuel manifold. Torch igniters are fitted to twoof the combustion chambers. Installation The unit, can be slung from three eyebolts; two on the com-pressor casing and one from the junction flange of stator blade and turbine shroud rings. Around the periphery of the diffusercasing are four facings permitting the unit to be mounted on a pair of diametrically opposite horizontal trunnions andsteadied at a third point either at the top or bottom of the casing. Alternatively it may be mounted from four pick-uppoints, furnished by eyebolts passing through the difluser, on CU FT/SEC MPH85O C. 45-2 LB/SQ. IN 34OMPH . 8L8/SO. IN AIR MASS FLOW AT INTAKE 88LB/SEC HOTON.S/HR OUTPUT OF TURBINE USED TO DRIVE COMPRESSOR AT tO.OOORPM - 1O.6OOHP POWER OF JET IN FLIGHT AT 5OOMPH EOUIVALENT TO A PISTON ENGINE OF 1O.OOO HP DRIVING AIRSCREW OF ASSUMED EFFICIENCY OF 66 PER CENT Diagram of gas flow, velocities, temperatures and pressures. level conditions. Figures relate to sea- a braced framing, similar to that conventionally employed forradial type piston engines. In cases where additional length is required for the exhaust assembly, an extension pipe, notexceeding 2ft in length, may be built on to the exhaust cone and mounted on the engine without requiring additional sup-port from the airframe. The dry weight of the unit is 2,011 lb and includes all engine auxiliaries but no accessory compo-nents for aircraft services. In running order, complete with listed aircraft accessories, the weight is 2,096 lb. As is generally known, both Goblin jet units and Vampireaircraft have been sold abroad and already foreign countries are exhibiting marked interest in the new Ghost unit. A.A.F. and R.A.F.V.R. Developments Details of Recruiting for Non-regular Air Forces SIGNIFICANT developments designed to strengthen andexpand the non-regular Air Forces (Auxiliary AirForce and R.A.F. Volunteer Reserve) were announced bythe Rt. Hon. Philip Noel-Baker, Secretary of State for Air, last week. The first concerns the A.A.F.. in which "Air-Defence"units, for the raid-reporting and fighter-control systems of the U.K., wiil be formed. These will play an important part inthe manning of Fighter Command and Fighter Group opera- tions rooms, sector operations centres and rooms, radar report-ing stations and associated units. Full notification will be given in the immediate future as the units become ready toreceive recruits from among wartime officers, airmen and W.A.A.F.s., particularly those experienced in the type of workoffered. Some Territorial and Auxiliary Forces Associations have already been approached concerning the raising of unitswithin their areas, and in due course Town Headquarters, with training and recreational facilities will be provided at a number: of centres. As with other A.A.F. branches, training will be undertaken during the evenings, at week-ends and for anannual period of fifteen days' camp or exercises. For the close-defence of R.A.F. airfields some squadrons ofthe A.A.F. Regiment are also to be formed, but no date has been fixed for the commencement of recruiting.A further development is the institution of Supplementary Lists for officers, one for men and one for women. They areopen to ex-officers who wish to maintain their connection with the R.A.F. and are prepared to volunteer immediately for ser-vice if this should be required in an emergency. Enrolment is open to any officer no longer serving who has held a wartimecommission in the R.A.F., in any of its Reserves or Auxiliaries or in the W.A.A.F. since September 2, 1939. These officerswill not be required to undertake peacetime training unless they choose to join units of the non-regular Air Forces. Applications for enrolment on the Supplementary Listsshould be addressed to the Permanent Under-Secretary of State, Air Ministry, Adastral House, London, W.C.2, thosefrom Air Force officers being marked on the outside '' For the attention of A.R.2," and those from W.A.A.F. officers "Forthe attention of S.n." A new R.A.F.V.R. departure will be the formation of ancil-lary units, e.g., M.T. companies, air stores parks, ammunition parks and embarkation units, which will not be required tooperate until an emergency arises. These units, therefore, can be raised with comparatively small training obligations. Another V.R. development is the imminent recruiting otex-pilots and later of navigators. Flying training will be given at a, number of civil schools and notification will be made iuthe Press when recruits can be accepted. The target date for the opening of the first schools is April 1st; others will followthroughout 1947 and 1948 until all the major centres of popu- lation in Great Britain and Northern Ireland are covered. Questions to Mr. Noel-Eaker and to Air Chief Marshal SirJohn Slessor, Air Member for Personnel, elicited the informa- tion that the civil flying schools to be opened on April 1st willbe Perth, Brough, Derby and Woodley. Eleven schools should be established during 1947 and twenty-five by 1948. Concerning University Air Squadrons it was announced thatthese have been formed at eleven Universities in Great Britain and Northern Ireland as units of the R.A.F.V.R. The majorityof the squadrons are for flying personnel, but those at Birming- ham, Nottingham and Southampton, while having a flyingprogramme, emphasize technical experience to assist the recruitment of the newly constituted Technical Branch of theR.A.F. FORTHCOMING EVENTS Feb. llth.—R.Ae.S. Belfast : " Electrics in Aircraft," Mr. Woodford. Feb. 15th.—Pathfinder Association : Grand Ball, Dorchester Hotel, Park Lane, London, W.I. 8 p.m. Feb. 15th.—Soc. of Licensed Aircraft Engineers: "Aviation Fuel—A Review," Air Cdr. F. Banks. Feb. 18th.—R.Ae.S. Bristol : " Radar—Its Uses and Possibilities in Civil Aviation," F. R. Wills (B.O.A.C). Feb. 19th.—R.AcS. Birmingham : Debate with Coventry branch. 7 p.m. Feb. 19th,—R.Ae.S. Southampton : " Problems in Fighter Design," R. L. UrWev.
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