Johns Multiplane

Multiplane

Johns Multiplane ready for testing circa 1919

General information
Type| Experimental aircraft
Manufacturer| American Multiplane Co.
Designer|

Herbert Johns

Number built| 1
History
First flight| 1919

The Johns Multiplane was a very large unsuccessful experimental aircraft having seven wings and six ailerons, powered by three Liberty L-12 V-12 aircraft engines. The machine had the appearance of a biplane spliced onto the front of a triplane with two wings added at the rear. The center fuselage housed the cockpit and one engine in tractor configuration. Both side booms ended with wing-mounted engines in pusher configuration. The aileron control force was found to be extremely high.

## Contents

* 1 Design and development
* 2 Operational history
* 3 Specifications
* 4 References
* 5 External links

## Design and development

Designed by Herbert Johns of the American Multiplane Company in Bath, New York, Patent # 1,365,995 Flying Machine was granted to Charles A. Herrmann, also of the American Multiplane Company on Oct. 3, 1916.[1]

## Operational history

The massive septi-wing made a series of short hops during testing, but was eventually scrapped in 1920[2] due to its inability to maintain controlled flight.

Johns Multiplane

## Specifications

General characteristics

* Crew: three
* Length: 55 ft 9 in (17 m)
* Wingspan: 106 ft 4 in (32.4 m)
* Powerplant: 3 × Liberty L-12 water-cooled 45° V-12 piston engine, 400 hp (300 kW) each

Performance

## References

1. ↑ Official Gazette of the United States Patent Office. 282. 1872. p. 461. https://archive.org/details/officialgazette282unit. Retrieved 1 March 2015.
2. ↑ Aviation History, Nov 2010 page 11

## External links

* Arizona Aviation History archived image

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Johns Multiplane. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Engineering:Johns_Multiplane&oldid=4210285"