The Brantly 305 is an
American five-seat light helicopter of the 1960s. It is an enlarged version of the
Brantly B-2
The Brantly B-2 is an American two-seat light helicopter produced by the Brantly Helicopter Corporation.
Design and development
After the failure of his first design, the Brantly B-1, Newby O. Brantly decided to design a simpler and less complic ...
which was produced by the
Brantly Helicopter Corporation.
Design and development
The five-seater Model 305 helicopter is based on the smaller two-seat
Brantly B-2
The Brantly B-2 is an American two-seat light helicopter produced by the Brantly Helicopter Corporation.
Design and development
After the failure of his first design, the Brantly B-1, Newby O. Brantly decided to design a simpler and less complic ...
that was designed by
Newby O. Brantly
Newby Odell Brantly (April 13, 1905 – July 19, 1993) was an American inventor, engineer and entrepreneur who founded the Brantly Helicopter Corporation.
Life
Born in Newport, Texas, Newby Brantly was the son of William Franklin and Ida Mae ...
. The helicopter is powered by a
Lycoming IVO-540 flat six piston engine.
The enlarged cabin has room for five passengers, two side-by-side forward-facing seats and a bench seat at the rear for three passengers.
The Model 305 first flew during January 1964 and
FAA
The Federal Aviation Administration (FAA) is the largest transportation agency of the U.S. government and regulates all aspects of civil aviation in the country as well as over surrounding international waters. Its powers include air traffic m ...
type approval
Type approval or certificate of conformity is granted to a product that meets a minimum set of regulatory, technical and safety requirements. Generally, type approval is required before a product is allowed to be sold in a particular country, so ...
was received 29 July 1965.
45 were built during the mid 60's by
Brantly and Brantly-Hynes produced an improved version in 1985 of which 4 were built. The Brantly 305 suffered from a
ground resonance Ground resonance is an imbalance in the rotation of a helicopter rotor when the blades become bunched up on one side of their rotational plane and cause an oscillation in phase with the frequency of the rocking of the helicopter on its landing gear. ...
problems. Hynes developed a more powerful and streamline version in 1993, none were produced.
Specifications
See also
References
*
Taylor, John W.R. ''Jane's All The World's Aircraft 1976-77''. London:Jane's Yearbooks, 1976. .
* The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing.
{{Brantly aircraft
1960s United States helicopters
1960s United States civil utility aircraft
305
Year 305 ( CCCV) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Constantius and Valerius (or, less frequently, year 1058 ''Ab urbe c ...
Aircraft first flown in 1964
Single-engined piston helicopters