Model aircraft with altitude change indicating means

Details Model aircraft with altitude change indicating means Model aircraft with altitude change indicating means

1978-09-26

1980-12-09

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specified housing

340 25, 340 27AT, 364433, 272 31A, 244180, 73179, 73384, H04B 700, G01C 2100

Patent

active

042387914

ABSTRACT:
A model aircraft with wireless earth-to-craft control. A device is aboard to emit signals indicating altitude change and visible by the operator on earth, this device being triggered operatively by signals produced by an air-pressure transducer of small size and having low inertia of movable parts.

REFERENCES:
patent: 2819615 (1958-11-01), Colt
patent: 3572115 (1971-03-01), Feuer
patent: 3713340 (1973-01-01), Springer
patent: 3769827 (1973-11-01), Moore
patent: 4006472 (1977-02-01), Greene
patent: 4049223 (1977-09-01), Watson
patent: 4160339 (1979-07-01), Dankman et al.
Modell (Germany), "An Altitude Measuring and Indicating Device for Model Aircraft", Nov. 1972, pp. 426-428.

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