May 16, 1921

May 16, 1921

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Plywood in Airplane Construction

By Armin Elmendorf13 min

The Baco Skylark

Possibility of Reactive Propulsion in Air

By T. Koleroff8 min

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More Features
630631

Plywood in Airplane Construction

The material now called plywood by airplane engineers is also frequently referred to by many persons as veneer. The two terms, plywood and veneer, however, refer to two distinct materials. Among technical men, the term veneer is limited to designate the thin sheets of wood out of which plywood is made.

By Armin Elmendorf13 min

626627

The Baco Skylark

The BaCo Skylark, an all purpose plane, was designed by the Bethlehem Aireraft Corp. to fulfill a variety of uses. It is a two seater side by side airplane, with dual control, making it ideal for passenger carrying or instruction work. The passenger acquires greater self-confidence and pleasure when sitting alongside of the pilot in seeing the ease with which the machine is controlled.
624625

Possibility of Reactive Propulsion in Air

Any installation of a reactive propulsion set will consist necessarily of three essentially different parts. First, of a device for feeding the active fluid into a pressure chamber; second, of an arrangement for the combustion of this active mass; and finally, of the reactive apparatus proper.

By T. Koleroff8 min

628629

“Who’s Who in American Aeronautics”

CURRY, JOHN FRANCIS, Major, Air Service; born, New York City, April 22, 1886; son of J. Frank Curry, M. D. and Mary (MacKinnin) Curry; married, Eleanor Dorothy Montgomery. Jan. 4, 1921. Educated: Public schools of New York City, 1 year; St. Jerome’s Academy, 5 years; 1908, U. S. Military Academy.
634635

The Determination of Downwash

It is obvious that, in accordance with Newton’s second law, the lift on an aerofoil must be equal to the vertical momentum communicated per second to the air mass affected. Consequently a lifting aerofoil in flight is trailed by a wash which has a definite inclination corresponding to the factors producing the lift.

By Lt. Walter S. Diehl7 min

632633

The British Passenger Airship G-FAAF

The airship works of William Beardmore, at Inchinnan, Glasgow', Scotland, have recently completed the first British commercial airship. The vessel was laid down during the war as the R.36 for the Royal Air Force, but was redesigned after the Armistice with a view to serve commercial purposes.

By Ralph H. Upson6 min

624625

Trade Note

Plymetl—A New Engineering Material
638639

Book Reviews

638639

French State Aerodromes for Civil Use

French commercial aviation disposes of three distinct kinds of aerodromes, namely :— ( 1 ) Public aerodromes maintained by the grovernment for commercial uses; (2) Military aerodromes temporarily opened for commercial uses; and (3) Private aerodromes.
640641

University of Detroit to Have Aero Course

May 91921 May 231921