FlightGlobal.com
Home
Premium
Archive
Video
Images
Forum
Atlas
Blogs
Jobs
Shop
RSS
Email Newsletters
You are in:
Home
Aviation History
1934
1934 - 0655.PDF
FLIGHT, JUNE 28, 1934 , AIRCRAFT ENGINES Types of power units at the Display In studying the various aero engines, some of our readers may be puzzled by the symbols written after the names. In the case of the Rolls-Royce types: "I" means that the engine is geared 0—632 : I; " //," 0.552 : I; and " ///," 0.475 : I- The letter " B " after thh figure denotes that the engine is a high-compression type but unsupercharged ; " M.S.," that it is " moderately supercharged " ; and " S," that it is fully supercharged. The "F," after the series number of a Bristol engine denotes that it uses the " F" type cylinder, introduced four or five years ago. jITHOUT adequate power the efforts of our aircraft designers would not be the success they are. Every year the cry comes for more power so that the performance may be even more than before, and seldom do the engine designers fail to give what is wanted. Nowadays we are able to get more power out of less weight of engine than has been obtainable before, but, unfor- tunately, the magnificent results of our engine designers are sometimes rather overshadowed, as people are apt to look upon the aeroplane as a unit and to forget the engine altogether. In the following pages we give the salient details of the engines fitted to those aircraft which are flying at Hendon on Saturday. Like all engines used in the R.A.F., they are made in many sub-types, and may be super- charged or geared, or not, according to the work for which they are required. THE ARMSTRONG-SIDDELEY RANGE The 670-h.p. " Tiger." AIRCRAFT engines made by Armstrong-Siddeley Motors,Ltd., cover a wide range ; all are air-cooled radials. The " Tiger "is a fourteen-cylinder engine with two staggered rows of seven ; it is rated at 670 / 700 at 5,000 ft. Epicyclic type reduction gearing is fitted to some engines of this range. The " Panther " is a smaller ver- sion of the " Tiger," giving 525 h.p. The " Serval is a The 525-h.p. " Panther." ten-cylinder double-row radial rated at 340/368 h.p. in the ungeared form. The " Lynx " is a seven-cylinder single- row engine, giving 215/240 h.p. The " Civet," until recently called " Seven Cylinder Genet Major," is very much like the " Lynx," but smaller, and is rated at 140/152 h.p. Siddeley engines cover the widest range of any aero engine manufaeiprer. The 340-h.p. " Serval." The 215-h.p. " Lynx." The 140-h.p. " Civet." 657
Sign up to
Flight Digital Magazine
Flight Print Magazine
Airline Business Magazine
E-newsletters
RSS
Events
