In 1939 Glenn D. Angle, from Detroit, Michigan, made a 5-cylinder, radial engine with 184 cubic inches of displacement giving 100 hp.

-This engine was built for the New Britain Machine Company in Connecticut.

-Though several powers are mentioned as the engine speed:

50 hp at 1,950 rpm.
-60 hp at 2,300 rpm.
-90 hp at 3,400 rpm.
y 100 hp at 3,800 rpm.

"Angle radial engine"

-Note from the author: Glenn D. Angle is also the author of the Aircraft Engine Encyclopedia(1921), a reference book for those interested in the subject.

-He also is the author of the book "Atmosphere-1939", which is considered as an actualization of the former one, after 18 years.