Boots – shoes – and leggings
Patent
1988-07-26
1990-12-25
Black, Thomas G.
Boots, shoes, and leggings
73178T, 244183, G06F 1550, G06F 1518
Patent
active
049808338
ABSTRACT:
A take-off performance monitor uses a sensor to produce a movement signal proportional to the movement of an aircraft during a take-off roll and, for each take-off, historical data is generated and stored based on the movement signal. An analyzing unit of the monitor uses the historical data and current conditions to calculate a reference take-off distance, reference acceleration data and reference velocity data. This information is output to the pilor to facilitate his judgment as to the adequacy to take-off performance. In the preferred embodiment, the analyzing unit utilizes five samples of acceleration and velocity during a take-off roll to solve an equation for five constants that are indicative of take-off performance. The five constants relate to static thrust, a linear relationship between thrust and velocity, a non-linear relationship between thrust and velocity, air drag and rolling drag, and these five constants constitute at least part of the historical data. During an actual take-off the actual acceleration of the aircraft and the reference acceleration are displayed to allow the pilot to make a quantitative evaluation of the takeoff performance. This comparison can be made at velocities much below take-off velocity and thus will allow a safe abortion of abnormal take-offs. In addition to an acceleration comparison a live take-off distance, based on actual take-off acceleration, is displayed and compared to the reference take-off distance as predicted in part from historical data.
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Milligan Mancil W.
Wilkerson H. Joe
Black Thomas G.
The University of Tennessee Research Corporation
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