Process and device for estimating at least the vertical...

Details Process and device for estimating at least the vertical... Process and device for estimating at least the vertical...

2005-09-20

2005-09-20

Zanelli, Michael J. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Aeronautical vehicle

C701S007000

Reexamination Certificate

active

06947814

ABSTRACT:
A process for estimating the vertical speed of a rotary wing aircraft may include integrating the sum of: (1) a first component corresponding to a vertical acceleration measurement and (2) a second component obtained from the difference between: (a) a first value incorporating a barometric measurement and (b) a second value incorporating a previous estimation of the vertical speed. The second component is derived from the difference between the first and second values by clipping this difference to eliminate, as appropriate, the part of the difference which is greater, in absolute value, than a predetermined value.

REFERENCES:
patent: 3715718 (1973-02-01), Astengo
patent: 3743221 (1973-07-01), Lykken et al.
patent: 4129275 (1978-12-01), Gerstine et al.
patent: 5349347 (1994-09-01), Muller
patent: 5781126 (1998-07-01), Paterson et al.
patent: 6298287 (2001-10-01), Tazartes et al.
patent: 6324448 (2001-11-01), Johnson

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