Runway and obstacle detector to improve airplane landing

Details Runway and obstacle detector to improve airplane landing Runway and obstacle detector to improve airplane landing

1980-04-08

1981-11-24

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

340 27R, G01S 1510

Patent

active

043028276

ABSTRACT:
An airplane flies through the air because the forward speed of its wings through the air produces lift which is greater than the total weight of the craft. When the forward speed decreases below a certain amount, there is insufficient lift to counteract the weight of the plane and the plane will drop down (or stall). This is the ideal condition of speed at which an airplane lands, but it is important that the stall occur when the plane is only a very short distance (like three feet) above the ground. It is also very important that the plane remain well above the ground or other obstacles until a suitable landing field is reached.

REFERENCES:
patent: 2016907 (1935-10-01), Rice
patent: 3093807 (1963-06-01), Crane et al.
patent: 3706068 (1972-12-01), Bradshaw et al.

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