A twin rotors technology allows to replace the usual rear rotor of an aircraft with a vertical fin

Titolo: A twin rotors technology allows to replace the usual rear rotor of an aircraft with a vertical fin
Oggetto: en Technology; en Airplanes and Zeppelins
Article Title and/or Image Caption: Image Caption: Twin rotors lift and propel a teardrop plywood craft designed and built in his spare time by Fred Landgraf, engineer at a Los Angeles, Calif. , aircraft company.
extracted text: TWIN ROTORS lift and
propel a teardrop ply-
wood craft designed and
built in his spare time by
Fred Landgraf, engineer
at a Los Angeles, Calif.,
aircraft factory. By elimi-
nating the problem of
torque, the twin-rotor fea-
ture makes it possible to
replace the usual rear ro-
tor with a vertical fin. The
twin rotors have 16-foot
diameters. Landgraf will
test-fly the plane within a
few weeks.
Lingua: eng
Copertura temporale: World War II
Data di rilascio: 1944-01
pagine: 48
Diritti: Public Domain (Google digitized)
Sorgente: Google Books
Archived by: Lorenzo Chinellato; Marco Bortolami (editor)
Copertura territoriale: United States of America; Los Angeles