November , 1929 AIRCRAFT ENGINEERIN G 313 The Latest Fokker Aeroplane— The F.32 Four-engined Day and Night Flying 30-Passenger Machin e with High Speed Range H E latest Fokker aeroplane, the F.32, is- side. Each nacelle contains two engines in The construction of the machine is of the a four-engined monoplane on familiar tandem with two 15-gallon oil tanks between. usual Fokker welded steel-tube type, with lines, with seats for 30 passengers, in Four 175-gallon petrol tanks are provided, plywood covering to the cantilever wing. addition to two pilots, wireless operator and with glass gauges in view of. the pilot. The The 20-ft. wide landing chassis is divided, steward. The specification called for a top weight empty is 13,800 lb., and a useful load with the axles hinged to the lower longerons. speed of 140 m.p.h., cruising speed of 120 of 8,700 lb. can be carried, making the gross Dual control is fitted in the totally enclosed weight 22,500 lb. For day flying it is intended m.p.h., and landing speed of 60 m.p.h. On pilots' cockpit, below which is the wireless to carry 400 gallons of petrol, 40 gallons of oil, its trial flight it attained a maximum of compartment . Internal expanding brakes, 157 m.p.h., cruising speed of 120 to 125 m.p.h., crew of four, and 30 passengers with 560 lb. which can be differentially operated for and was landed at 47 m.p.h.—all these being of baggage. For night work the crew will manoeuvring on the ground, are fitted to A.S.I. readings. The four 525 h.p. Pratt & be increased to five, and only 16 passengers the wheels, which have 58 by 14-in. tyres. Whitney " Hornet " engines are located in two will be carried, the petrol load being raised nacelles suspended from the wing on each to 700 gallons, with 820 lb. of baggage. Characteristics 99 ft. Span Length 69 ft. 10 in. Overall height 16 ft. 6 in. Wing area 1,350 sq. ft. Weight empty 13,800 lb. Useful load S,700 lb. Weight loaded 22,500 lb. Engines 4-525 h.p. " Hornet " Wing loading 16·6 1b/sq. ft. Power loading 10·7 1b./h.p. Horse-power/passenger 70 h.p. Maximum speed 157 m.p.h. Cruising speed 120·125 m.p.h Landing speed 47 m.p.h. I t is stated that with an unspecified load it " kept its flying speed " on the two front, and climbed on the two rear, engines only. With either the two port or the two starboard engines alone i t turned in either direction ; and, with one engine only, gained altitude with two-thirds load (i.e., presumably with 1,200 lb. useful load only). The Western Air Express has ordered six of th e machines for use on the rout e Los Angeles- San Francisco-Kansas City and a new factory for the building of the type is being erected at Los Angeles.
Aircraft Engineering and Aerospace Technology – Emerald Publishing
Published: Sep 1, 1929
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