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Aviation History
1959
1959 - 1310.PDF
ROLLS-ROYCE DART-POWERED DC-3 REPLACEMENTS Span ... Length Powerplant PropellersCabin Dimensions: Length Width (in) .. Height (in) .. Volume (cu ft) Seating capacity Freight door, height Freight door, width Max. t.o. weight (Ib) Max. landing weight (Ib) Payload (Ib) Fuel capacity (Imp. gal) Balanced field length (ft) .. Landing distance from 50ft (ft)Range with max. payload, no allowances (n.m.) Rate of climb at s.l. (ft/min) Cruise at recommended r.p.m. (let) Basic price (approx) Avro 748 9Sft 67ft Dart 514 (RDa. 6) Rotol 12ft 46ft 6in 97.2 76.6 1,990 36-40 4ft 6in 4ft 33,000 33,000 9,666 1,100 3,500 2,310 580 1.250 230 £170,000 Dart Harold 94ft 9±in 71ft 11in Dart 527 (RDa. 7/2) Rotol 12*ft 43ft 8in 102 75 2,198 36-47 5ft 4in Me 5in 37,000 37,000 10,160 1,080 3,600 2,260 510 1.580 241 £185,000 Friendship 95ft 2in 75ft 9in Dart 511 (RDa. 6) Rotol 12ft 47ft 6in 106 80 1,620 32-44 5ft 10in 7ft 7±in 35.700 34,000 10,278 1,100 3,810 2.140 590 1,290 236 £215,000 These payload range curves assume I.S.A., 230 kt T.A.S. cruise at 20fl00ft, 320 Ib water/ methanol, max. take-off weight 33J000 Ib. Reserve fuel: 4=5 per cent + 45 min. hold+ 200 n.m. diversion; fi=5 per cent +45 min hold +100 n.m. diversion; C=5 per cent + 45 min hold; D=none Left, a "Flighf table. F-Jls with RDaJs have a higher performance IO.OOO BOOO ^ 6.OOO 2OOO 4O PASSENGERS \ AT 21Olb EACH > INCLUDING BAGGAGE 5OO 1,000 < SOO STAGE LENGTH (n.m.) 2.OOO twin V.H.F. sets, an A.D.F., and a marker receiver, but muchadditional equipment—including I.L.S., V.O.R., H.F., weather radar, etc.—can be installed to customer's option. Most of thecomponents used on the Avro 748 systems have already seen service in the Viscount and have been selected because of theirlong overhaul life. Performance. Special attention has been paid to the need tooperate the Avro 748 from hot, high airfields with limited runway lengths and semi-prepared surfaces. Each main leg, for example,is equipped with twin low-pressure tyres, and the large wing area and high aspect-ratio help to reduce payload or fuel restrictionsunder extreme conditions. For instance, no limitation on take-off weight is encountered in I.S.A. conditions below 4300ft. Withbath engines operating, take-off at maximum weight to 35ft can be made in 2,520ft and in the one-engine-out case C.A.B. S.R.422Arequirements are met. The use of water/methanol is assumed, but where it is not installed range can be increased by 70 n.m.The still air range with no reserves is 1,630 n.m. with a payload of 4,420 lb. Given 2,000 hr annual utilization, direct cost—based on the S.B.A.C. method corrected for actual RDa.6 maintenancecosts—is 69.5d per aircraft n.m. on a 200 n.m. stage length; equivalent, with 40 passengers, to 1.74d per seat n.m. This isclaimed to be substantially lower than existing aircraft in the same class, particularly over short stages. Payload Accommodation. The cabin is particularly spacious.Passenger loading is through a 5ft 3in X 2ft 6in door (to which folding steps can be fitted) on the port side and two doors areprovided on the starboard side for loading baggage or freight; the forward door can accommodate a Dart engine. Seats arearranged four-abreast up to a maximum of 40 at 36in pitch and a mixed passenger/freight layout is possible by installing amovable partition. Provision is made for a galley and all layouts include a toilet and ample baggage space. Crew complement isnormally two pilots and a steward. Sir Roy Dobson, managing director of Hawker-Siddeley Avia-tion, recently left for New Delhi to discuss the aircraft with Mr. Krishna Menon, the Indian Minister of Defence. He saidthat India had shown "a great deal of interest." PATTERNS OF POWER: JAVELIN 7s OF FIGHTER COMMAND Led by S/L. D. W. Smith, flying with the squadron commander (W/C. N. Poole) as his navigator, six Gloster Javelin FAWJs of No. 33 Sqn. thrust into the Durham skies from their base at Middleton St. George. Ths squadron, formerly equipped with A.W.A. Meteor N.F.I4s, received its Javelin Is from last July onwards and was the first unit to be equipped with them "Flight" photograph
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