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Aviation History
1947
1947 - 1055.PDF
JUNE 26TH, 1947 FLIGHT The demonstration D.C-4M-1 on the tarmac at London Airport before departing for Canad. Canadair Four Rolls-Royce Engined DC-4M Stepped Up in Weight and . Accommodation : Impressions in the AirT HE first Canadair Four (DC-4M-4) is now coming through the shops and is expected to be flying in July of this year. Rate of production, it is hoped, will rise very sharply towards the end of 1947 and a figure of fifteen per month is mentioned as a possibility. In the accompanying table are set out the main weights and performances, all of which appear more favourable than the equivalent figures for the DC-4M-1. Seat- ing capacity is increased by four—from 36 to 40—gross weight goes up by 2,000 lb to 80,000 lb and the max. landing weight from 63,500 lb to 68,000 lb. In addition, the cabin will be pressurized on the DC-6 system. Power plants will still be Rolls-Royce Merlins —the civil Mk 620 variety—which give 1,725 h.p. for take-off at 20 lb boost and a normal maximum output of 1,285 hP- For maximum cruising, up to 23,500ft, 1,160 h.p. with NO DECEPTION : The two port Merlinsfeathered while flying above the cloud at 9,000ft. " Flight " vhotoaraph. + 9 lb boost is taken out of each power unit. It will be remembered that the DC-4M was originally built as a transport aircraft for the Royal Canadian Air r " Flight " uhotooraph. FLYING ON ONE : Engine rev counfefs show three air-screws feathered and the remaining Merlins-turning at 2,850 r.p.m. Altimeter shows 9,350ft and the rate of climb zero.Capt. Lilly's hand is adjusting the rudder trim to counteract fhe asymmetric thrust. Force and six of these have been loaned to Trans-CanadaAirlines to run their transatlantic service between Mon- treal and London. Ten journeys each way per week aremade. All six of these aircraft were fitted out by Canadair, Ltd., to T.C.A. specifications. Recently we had an opportunity of flying in one of theDC-4M-1S while it was being demonstrated by Capt. A. Lilly, Canadair's chief test pilot, who has 6,000 hours air-line piloting to his credit in addition to 4,000 hours test flying. At an all-up weight of 63,000 lb the aircraft left theground after a ran of only 13 seconds and climbed at more
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