FlightGlobal.com
Home
Premium
Archive
Video
Images
Forum
Atlas
Blogs
Jobs
Shop
RSS
Email Newsletters
You are in:
Home
Aviation History
1938
1938 - 0910.PDF
326 FLIGHT. MARCH 31, 193B. The TWO-ROW CYCLONE 14 High Rating for New American Engine AT the beginning of the month announcementwas made of a two-row, fourteen-cylinder. Wright Cyclone engine. To distinguish thisnew one from the nine-cylinder Cyclone, it is to be called the Cyclone 14. In external details the new engine resembles the Cyclone G very closely; in fact, the cylinders ap- pear to be indentical. The capacity of the Cyclone 14 is 2,600 cubic in. (42,600 c.c.) as com- pared with 1,823 cubic in. (29,880 c.c.) for the G Cyclone. A take-off rating of 1,500 h.p. has been estab- lished, and, for normal sea-level output, 1,200 h.p. This, it is said, is the highest rating ac- corded to an American aero engine. The two-row, 1,500 h.p. Wright Cyclone 14. GERMANY'S BIG NINE THE Bramo Fafnir 323, which, it may be recalled, madeits first public appearance at the Milan Aero Show last October, is, so far as is known, the only large wholly German radial in production. It appears in fully and moderately supercharged forms, and the construction is quite straightforward. A built-up two-piece crankshaft is used, and carries a one-piece master rod with eight articulated rods. Each piston has six rings and a floating gudgeon pin with aluminium end pads. The supercharger impellor speeds for fully and moderately boosted engines are 11.4 and 9.5:1 respectively. Heating from the exhaust gases is provided for in the Pallas duplex carburettor, which has automatic boost and altitude controls mounted upon it. i Engine data are: £>ore anu siroKe, 154 x 160 mm.; capacity, 26.82 litres; compression ratio, 6.4; overall diameter, 1,388 mm:; length, 1,263 mm.; weight without accessories, 1,201 lb. Power figures are: Moderately supercharged: 950 h.p. at (Left) The Fafnir 323 has a clean frontal aspect. (Above) The large induction pipes and unfamiliar grouping of accessories give the rear cover an unusual appearance. 2,450 r.p.ra. for take off; 840 h.p. at 2,350 r.p.m. at 6,730ft. rated, and 670 h.p. at 2,100 r.p.m. at 6,730ft. for cruising. Supercharged: 850 h.p. at 2,450 r.p.m. for take off; 830 h.p.. at 2,350 r.p.m. at 13,750ft. rated, and 665 h.p. at 2,100 r.p.m. at 13,750ft. for cruising. The makers are Brandenburgische Motorenwerke, of Berlin, whose associated company in this country is Siemens-Schuckert (Great Britain), Ltd., 30-34, New Bridge St., London, E.C.4. SEEFLUGZEUG : This Heinkel sea- plane with two 850 h.p. engines—pre- sumably B.M.W.- built Hornets—has broken several world's records. Included among them is a speed of 204 m.p.h. for a distance of 2,000 km., carrying 2,000 kg.
Sign up to
Flight Digital Magazine
Flight Print Magazine
Airline Business Magazine
E-newsletters
RSS
Events
