(Valentine) Newbauer Vertical Airplane Co

Monterey Park CA.

USA

 

In 1927 Valentine Newbauer built a single-place open helicopter with two propeller-type (coaxial?) rotors and a tractor prop. A model was built, powered by a 1.5hp engine. Newbauer claimed it lifted 60 pounds, which is judged by experts to be highly improbable.

 

He was engaged in helicopter experiments from 1917-27 and held several patents. One project was entered in the 1924 British helicopter competition.