Air data measurement system with circuit for linearizing pressur

Details Air data measurement system with circuit for linearizing pressur Air data measurement system with circuit for linearizing pressur

1998-03-20

1999-08-31

Barlow, John

Data processing: measuring, calibrating, or testing

Measurement system

Pressure

702 98, 702 99, 73708, 73721, 73727, G06F 1520

Patent

active

059466421

ABSTRACT:
An air data measurement system includes a device for sensing air pressure outside an aircraft, a pressure transducer in fluid communication with the air pressure sensing device and having a piezoresistive bridge attached on a flexible diaphragm. The piezoresistive bridge has an electrical resistance which varies in response to the sensed air pressure applied to the diaphragm and whose sensitivity varies with the magnitude of the excitation current passing therethrough. The system also includes a current supply operatively connected to the pressure transducer for supplying and varying the magnitude of the excitation current to the piezoresistive bridge. Further included is an output device connected to the pressure transducer for sensing a change in the electrical resistance of the piezoresistive bridge and outputting a signal from the piezoresistive bridge corresponding to the sensed air pressure. The current supply device varies the magnitude of the excitation current to the bridge in response to the output signal of the output device so as to change the sensitivity of the transducer relative to the airspeed of the aircraft.

REFERENCES:
patent: 4135403 (1979-01-01), Skarvada
patent: 4253335 (1981-03-01), Shimomura
patent: 4360888 (1982-11-01), Onsken et al.
patent: 4483614 (1984-11-01), Rogers
patent: 4577510 (1986-03-01), Bur et al.
patent: 4608641 (1986-08-01), Snell
patent: 5610845 (1997-03-01), Slabinski et al.
"True Airspeed Meter", Eric Richman and Jim Roal, True Airspeed System, http://www.tricity.wsu.edu/.about.hroal/aspeed.htm, Mar. 17, 1997, pp. 1-7 .

Affiliated with

Also associated with

Rating

Air data measurement system with circuit for linearizing pressur does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air data measurement system with circuit for linearizing pressur, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air data measurement system with circuit for linearizing pressur will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2428795