Harmon Engineering Company
The Harmon Engineering Company was an American aircraft manufacturer based in Howe, Texas. The company specialized in aircraft plans for amateur construction.[1]
Privately held company | |
Industry | Aerospace |
Fate | Out of business after 1978 |
Headquarters | |
Products | Aircraft plans |
The company's original design, given the German name, Harmon Der Donnerschlag (English: Thunderclap) is a simple, open cockpit, single-seat mid-wing aircraft, built with a welded 4130 steel tube fuselage and wooden-framed wings, all covered in doped aircraft fabric covering. The aircraft was later developed into the Harmon Mister America, which uses the same construction methods and has a similar lay-out. Both designs also employ inexpensive automotive Volkswagen air-cooled engines.[1]
Aircraft
Model name | First flight | Number built | Type |
---|---|---|---|
Harmon Der Donnerschlag | Single seat sport airplane | ||
Harmon Mister America | 1975 | At least one[2] | Single seat sport airplane |
gollark: Differentiate it, substitute x=3 into that, set dy/dx to 0, solve.
gollark: Oh, actually just > 0 since it's a denominator, yes.
gollark: The $9-x^2$ bit has to have a value >= 0. So solve that and work out for which values it is >= 0.
gollark: You want the bit in the square root to be greater than or equal to 0, so just figure out what values of x give you that.
gollark: I see.
References
- Plane and Pilot: 1978 Aircraft Directory, pages 142-143. Werner & Werner Corp, Santa Monica CA, 1977. ISBN 0-918312-00-0
- Federal Aviation Administration (10 November 2014). "Make / Model Inquiry Results". Retrieved 10 November 2014.
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