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Aviation History
1955
1955 - 1164.PDF
278 FLIGHT HUNTER FOR TWO: The provisional name Hunter Two - seater conferred on this latest Hawker prototype (for- merly referred to as the Hunter Trainer) is in keeping with a recent company statement that new tactical appli- cations are foreseen. The aircraft has been flying from Dunsfold for several weeks. FROM ALL QUARTERS Canberra's Atlantic ShuttleL AST Tuesday morning, August 23rd, an English ElectricCanberra P.R.7, manned by Captain J. W. Hackett (pilot) and Peter Moneypenny (navigator)—both of Silver City Airways,Ltd.—left London Airport in an attempt to fly to New York and back to London in one day. The English Electric pilots were sofully occupied with work on the P.I and the later marks of Canberra that none could be spared for the attempt.The Canberra took off at 0710 hr B.S.T. and was to fly non- stop to Floyd Bennett Field, near New York. From there it wasto refuel before returning. The total distance from London to New York and back is 6,920 statute miles—2,776 miles greater thanthat covered on August 23rd, 1952, when a Canberra set up two world records by flying from Belfast to Gander, Newfoundland,and back in one day. Messages reaching London on Tuesday showed that the P.R.7reached Floyd Bennett Field at 14.48 hr B.S.T., having made the crossing in 7 hr 38 min at an average speed of about 460 m.p.h.The turn-round was effected in 35 min and it was expected that, with a favourable wind, the return journey would be faster. Avro's "New" 504 T AST autumn the Avro Company bought up a somewhat bat-••—' tered 504N at Old Warden, where it had been part of the Shuttleworth Collection. The decision was taken to convert itback to the 504K configuration, for that variant was the more historic, and under the supervision of the late Mr. A. Ainsworthand Mr. C. Broadhead, work went ahead at Woodford. It was necessary to rebuild the wings, ailerons and centre section; thefront end of the fuselage had to be modified; and a completely new undercarriage and airscrew were required. A nation-wide"treasure hunt" ensued and the job was done. True, another airworthy 504 was owned by the Royal Aero-nautical Society; but this was not allowed to fly, and Avros had in mind demonstration flights on appropriate occasions.Last Friday—August 19th—the transformed machine was ready. The pilot was Jimmy Orrell, and the passenger his colleague,Johnny Baker. Orrell, who was 504K-trained, made an initial flight of 29 minutes, during which he performed stalls, loops anda spin. Now the machine is to figure in a film about the life of Douglas Bader—another 504 trainee—before joining the Shuttle-worth Trust Collection. Credit for the rejuvenation must go jointly to Avro apprenticesand to members of the industry, including Dunlop, Aceles and Pollock and the Airscrew Company and Jicwood, Ltd. A uniquecontribution was made by Mr. Harold Rogerson, now of the Armstrong Siddeley Development Corporation, and one-timeassistant chief designer at Avro. Guided only by an outline plan view of the airscrew, its pitch and diameter, he drew out in detailthe required sections and general dimensions, and despatched them to Avros almost by return of post. This was work of a kind whichhe had first done when he designed the 504K airscrew to suit the Le Rhone engine 33 years ago. The Conway Type-tested AS we go to press, it is learned that a Rolls-Royce Conway• by-pass turbojet has completed a British Government type- test, at a rating of 13,000 lb. A Rolls-Royce statement remarksthat the relatively low jet velocity in conjunction with the latest form of jet-nozzle will aid in reducing noise. The Conway has thelowest specific fuel consumption of any type-tested jet engine. Nimonic 100 MENTION may now be made of a new alloy in the world-famous Nimonic series. Known as Nimonic 100, the new alloy represents a most important step forward in making availableto engine manufacturers material with still further improved creep-strength properties at elevated temperatures. Nimonic 100has very high resistance to creep yet may be used at temperatures roughly 30 deg C higher than those permissible with previousalloys in the series. Stress-to-rupture properties are given below, and we are informed that these may safely be taken as a basisfor design calculations. It may be emphasized that, with each new alloy, the operatingtemperature at which the material must be tough and stiff approaches more closely the temperature at which it can be workedduring manufacture. That production problems of Nimonic 100 have been solved is clear from the announcement that quantitiesof the new alloy have now been supplied to several engine manu- facturers for complete evaluation in actual gas turbines. Thenew alloy was developed in the research laboratories of the Mond Nickel Co., Ltd., and is manufactured by Henry Wiggin and Co.,Ltd. STRESS-TO-RUPTURE PROPERTIES OF NIMONIC 100 Temperature deg C. 870 925 940 980 Stress (tons tq in) far rupture in 50 hours 13.5 8.5 6.7 4.0 100 hours 12.0 7.0 6.0 3.5 300 hours 9.5 5.5 4.5 3.0 TWO FOR A HUNTER: New portraits of Hawker test pilots Neville Duke and Frank Bullen, and an indication of the cockpit dimensions of the Hunter Two-seater,are afforded by this picture taken at Dunsfold.
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