FlightGlobal.com
Home
Premium
Archive
Video
Images
Forum
Atlas
Blogs
Jobs
Shop
RSS
Email Newsletters
You are in:
Home
Aviation History
1925
1925 - 0006.PDF
JANUARY 1, 1925 THE TWO NEW HISPANO-SUIZAS : On the left the 450 h.p. 12-cylinder Vee type, and on the right the " W " or " Broad Arrow " type of the same rated horse-power. Both show the usual " clean " lines ^_ .. . -which one associates with Hispano engines. in that the cylinders are not monoblocs, but are grouped inpairs, The angle between cylinder is also different, being 40° as compared with the 60° angle of the 12 WE. Bothengines can be supplied either with direct drive or with the special sun-and-planet reduction gear developed by Farmans.Any desired gear ratio can be supplied, but two have been standardised—a 2 to 1 for use on slow machines, and a1-5 to 1 for faster aircraft. The type 12 WE has a bore and stroke of 130 and 160 mm. respectively (total cubiccapacity 25 litres), and develops 500 h.p. at 2,150 r.p.m. and 550 h.p. at 2,200 r.p.m. The weight of the 12 WE inrunning order, but with direct drive, is 455 kgs. (1,000 lbs.), and the substitution of a 2 to 1 reduction gear adds another39.5 kgs. (87 lbs.) to this, bringing the total weight up to 1,087 lbs., or 2-17 lbs./h.p. (based on nominal power of500 b.h.p.). The type 18 WD has a bore of 130 mm. and a stroke of 180 mm. The weight dry, with direct drive,is 725 kgs. (1,600 lbs.), and the reduction gear and propeller shaft weigh 51 kgs. (112 lbs). GNOME AND RHONE The most imposing item on the Gnome and Rhone standwas a Bristol " Jupiter," which this firm now builds under licence. The French-built engine was, it must be admitted,a very fine piece of work, and seeing it one is not surprised that the " Jupiter " has done so well in French Air Ministrytests. No effort has been spared to make the most of a good design, and the French-built " Jupiter " is a credit to allconcerned. THE "HISSOS " Probably one of the mostrnagnificent strides ever made byan aero-engine firm in a short period of time has^ been the production of two entirely new types of engine by the famousHispano-Suiza firm. Both these are rated at 450 h.p., but one is a V-type, while the other is of the W or " broad arrow "formation. Both have 12 cylinders, of a bore and stroke of 140 by 150 mm. respectively, and both have normally acompression ratio of 5-3 to 1. In both types'fhe cylinder banks are placed at an angle of 60°. The total cubic capacityof both types is a little over 27f litres. Apart from the novel features resulting from the different number of cylinders andthe \V formation, the characteristic features of the two new Hispanos are the same as in the famous 300 h.p. type, andone of the new engines at least, the W type, has proved itself by establishing, in the Adolphe Bernard " Ferbois " racingmonoplane, a new world's speed record of 280 m.p.h. TJ»e weight of the V-tvpe engine is 420 kgs. (925 lbs. , and of tneW-type 375 kgs."(825 lbs.). In connection with the latter type it is of interest to note that the cylinder blocks are thesame as those used in the 800 h.p. type. , * LORRAINE-DIETRICH ~ ' Very special interest was lent to the exhibits of the Lorraine-Dietrich firm by the fact that the engine used by Pelletier d'Oisy on his famous Paris-Tokio flight was shown. Theengine, although having obviously had a difficult time of it, was" certainly in no worse condition than was ±0 be expected TWO PANHARD-LEVASSOR AERO ENGINES : On the left the 12-cylinder " valveless," and on the right the 500 h.p. Vee type. T :-, •-K.. . : -
Sign up to
Flight Digital Magazine
Flight Print Magazine
Airline Business Magazine
E-newsletters
RSS
Events
