FlightGlobal.com
Home
Premium
Archive
Video
Images
Forum
Atlas
Blogs
Jobs
Shop
RSS
Email Newsletters
You are in:
Home
Aviation History
1934
1934 - 1049.PDF
OCTOBER II, 1934. FLIGHT. 1051 140 H.P.-710 H.P. The Warner "Super Scarab" and the Wright" Cyclone " Series F . cylinder geared and supercharged two- row radial of extremely compact appear- ance giving 700 h.p. at 2,500 r.p.m. at 8,500ft. The displacement is 1,535 cubic inches, blower ratio 11:1, gear ratio 3:1, and bare weight 9941b. Fuel consumption is 0.481b. per b.h.p./hr. at full throttle, and oil consumption 0.0351b. per b.h.p./hr. Great interest is being displayed in this engine by the U.S. Navy, which standardises on air- cooled types. Warner Aircraft Corporation " Scarab" and "Super Scarab ' eiigkies manufactured by the Warner Company are highly popular in the United States for installation in light aircraft. Both types are represented in the race, a " Scarab " being fitted in a Cessna monoplane and Mr. John H. Wright's "clipped wing" Mono- coupe racer having a " Super Scarab." The " Scarab " is a seven-cylinder air- cooled radial giving a maximum power of 132 h.p. at 2,150 r.p.m. at a dry weight of 2701b. Fuel consumption is from 6 to 8 gallons per hour. The "Super Scarab," which in Mr. Wright's monocoupe is equipped with a special long cord cowling, is similar to the " Scarab " except for an increase in bore, and gives 145 h.p. The Wright Aeronautical Corporation Famous ' for its '' Whirlwind '' and "Cyclone" engines, both of which types are represented in the England- Australia race, this company, which is a division of the Curtiss-Wright Cor- poration, produces also the famous Curtiss " Conqueror " and " Super Con- queror '' types, which may be cooled either by water or Prestone. The Wright " Cyclone " series F is a highly popular engine at the moment, being in- stalled in a very wide variety of ex- tremely fast civil and military types, both in America and abroad. "Cy- clone" F's are fitted'in machines Nos. 4, 8, 44, 50, 57, and 64 These engines are either of the Series F.2 or F.3. The F.2 " Cyclone " gives 710 h.p. at 1,900 r.p.m. to 3,000ft., weighs 9371b., and has a compression ratio of 6.4:1 and a supercharger drive ratio of 7:1. Fuel consumption is 6-9A gallons per hour at 1,950 r.p.m. The F.3 type is super- charged to 7,000ft. and gives approxi- mately the same power as the F.2. Three Wright "Whirlwinds" of the series R-975-E power the Pander S.4 " Postjager." This engine gives 365 h.p. at 2,100 r.p.m. and weighs 5951b. Fuel consumption is 0.551b. per b.h.p./ hr. Miss Jacqueline Cochrane's " hush- hush " Northrop monoplane is equipped with a Curtiss " Super Conqueror " which may be regarded as a super- charged version of the 12-cylinder " Conqueror " liquid cooled engine widely employed in military aircraft in the U.S.A. The power is 750 h.p. at 12,oooft. With this engine the Northrop is reputed to have a phenomenal per- formance. The Curtiss D.I2, the forerunner of the " Conqueror," is used in the Hosler- B. monoplane. This type has been al- ready dealt with as the Fairey "Felix." FRANCE Hispano Suiza A very powerful Hispano Suiza water-cooled engine, the 12 Ybrs., is fitted in the Wibault 366. This engine, a 12-cylinder " V " type, has caused considerable discussion in aeronautical circles during the past few months, mainly owing to the fact that it delivers a very high power for an extra- ordinarily low weight. It is fitted in numerous French "prototype" military types and in a few new commercial air- craft. Bore and stroke are 5.9m. and 6.69m. respectively, and the compres- sion ratio is 5.8:1. The weight dry is 9461b. At ground level the power is 800 h.p., but at 13,120ft. this is raised to 850 h.p. Fuel consumption is given as 0.491b. per b.h.p./hr. and oil con- sumption as 0.0171b. per b.h.p./hr. A Hispano-built Wright " Cyclone " was to have been installed in Michel Detroyat's Lockheed "Orion," which has been withdrawn from the race. Qnome-Rhone A wide range of air-cooled engines known as the " K" series has been developed by this company in recent years. Most powerful of these engines is the 14 Krs. two-row 14-cylinder radial as installed in the Bleriot 111 mono- plane. This type is proving very popu- lar in France and other European •ountries for use in machines ranging from single-seater fighters to " gros por- teurs." The capacity of the engine is T,26o cubic inches, and the power 810 h.p. GERMANY Hirth Produced by the Hirth Motoren Gi'sdlschaft of Stuttgart for the Inter- national Touring Competition, the Hirth H.M.8 U. is an eight-cylinder inverted air-cooled engine of 8,000 c.c. capacity, with a bore of 105 mm. and a stroke of 115 mm. The compression ratio is 6.5:1, and at a speed of 3,000 r.p.m. the engine develops 225 b.h.p. A reduc- tion gear brings the airscrew speed down to 1,960 r.p.m. In the England-Australia Kace this engine will be fitted in the B.F.W.- Messerschmitt 108 monoplane. Provi- sion has been made for mounting a three- bladed airscrew. In its general con- struction tin- H.M.8 U follows standard Hirth practice, except, of course, for the V arrangement of the cylinders. ITALY Fiat A Fiat A 59, which is a Pratt & Whitney " Hornet " built under licence by the Fiat Co., is fitted in the Berga- maschi P.L.3. The main dimensions are similar to those given for the Pratt & Whitney " Hornet." and the power is 675 h.p. at 6,000 ft. Piaggio Three Piaggio "Stella" IX air-cooled radials giving 560 h.p. at 13,000ft. are installed in the big Savoia-Marchetti S.79 monoplane. This engine has but recently been developed, and few data are at present available. It is believed, how- ever, that the bore is 5.75m. and the stroke 6.sin. TWO ROW " : The big Gndme- Rhone 14 K.rs. radial.
Sign up to
Flight Digital Magazine
Flight Print Magazine
Airline Business Magazine
E-newsletters
RSS
Events
