FOR many years, Helmut Hirth, the well-known pre-war pilot and engine-constructor, has been working on the construction and design of a new cheap engine for touring aeroplanes. Those who know his early engines expected to see a high revolution, water-cooled, two-cycle engine with double pistons, something after the type of the motor-cycle engines which have run successfully in many races. It was a great surprise, therefore, when he came out about a year ago with an air-cooled, four-cylinder, four-cycle, vertical engine.
A New Light Aeroplane Engine
The 60-h.p. Four-Cylinder Inverted Air-Cooled Hirth with Coil-Ignition Described
Aircraft Engineering and Aerospace Technology ; 3 , 9 ; 227
1931-09-01
1 pages
Article (Journal)
Electronic Resource
English
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