OCR Text |
Show Novel 'Barrel' Engine Built for Airplanes CAMBRIDGE, MASS. Final acceptance ac-ceptance tests for a United States bureau of air commerce rating have been completed at the Massachusetts Massachu-setts Institute of Technology here for a radically new type of airplane air-plane engine declared by its designers de-signers to be smaller and lighter than comparable engines of conventional con-ventional type. Developed by Herac-lio Herac-lio Alfaro, the hew engine Is of the so-called "barrel" type. It Is believed be-lieved to be the first engine of this design able to meet performance requirements of the air commerce bureau. With its cylinders parallel to the crankshaft on which the propeller turns, instead of perpendicular to It as in radial and V-type engines, the "barrel" engine Is one of the most compact ever designed. Its diameter, exclusive of small protruding pro-truding parts which may possibly be eliminated in later models, is but 15 inches. |