Measuring and testing – Navigation – Ship's log
Patent
1978-02-17
1980-03-11
Woodiel, Donald O.
Measuring and testing
Navigation
Ship's log
73722, G01C 2110, G01L 910
Patent
active
041921836
ABSTRACT:
Pressure ratio transducer system in which input pressures are converted to electrical signals and the electrical signals are processed to produce an output signal corresponding to the ratio of the input pressures. The system is particularly suitable for use in an aircraft for determining the ratio of the change in pressure due to motion of the aircraft to the static pressure in the air surrounding the aircraft.
REFERENCES:
patent: 2806353 (1957-09-01), Grafinger et al.
patent: 3209593 (1965-10-01), Johnson
patent: 3443080 (1969-05-01), Spencer
patent: 3805617 (1974-04-01), Kamazuka
patent: 3848180 (1974-11-01), Jonke et al.
Avellis Cosmo L.
Pavone Carlo
Wolfkamp Albertus
Edcliff Instruments
Woodiel Donald O.
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