Boots – shoes – and leggings
Patent
1982-12-27
1985-11-12
Wise, Edward J.
Boots, shoes, and leggings
364424, G01F 2326
Patent
active
045532168
ABSTRACT:
The density, volume and mass of fuel held in an aircraft tank are measured by a system of four pressure sensors interfaced with an associated microcomputer. The sensors are disposed in a predetermined array at unequal depths below the surface plane of the contained fuel. Electrical transducers associated with the pressure sensors develop electrical signals representing the associated pressures P1, P2, P3, and P4 and these signals are processed by the microcomputer which is programmed to correlate the individual pressure signals and known coordinate locations of the sensors with certain unknown parameters including the fuel density .rho., and the orientation and distance of the fuel surface plane relative to each pressure sensor. These relationships establish four simultaneous equations that are processed by the programmed microcomputer to yield simultaneous solutions for the density .rho., and for the position of the fuel surface plane. Further processing by the programmed microcomputer of the signals representing the position of the surface plane yields output data signals representing the volume of the fuel, i.e., that which fills the tank up to the now-determined plane of the fuel surface level. Thereafter the previously measured density .rho. is automatically multiplied in the microcomputer by the determined volume of fuel to yield data signals representing the fuel mass. The resulting signals for the density .rho., volume V and mass M of the fuel are displayed on readout devices responsive to output signals from the microcomputer. In an alternative embodiment, a system of three pressure sensors is employed in a similar manner to produce information signals representing volume V and mass M of the fuel when the density .rho. is either known or assumed.
REFERENCES:
patent: 2388559 (1945-11-01), Macintyre
patent: 3237451 (1966-03-01), Haeff
patent: 3358509 (1967-12-01), Edwards et al.
patent: 3361897 (1968-01-01), Rush
patent: 3439539 (1969-04-01), Pallis
patent: 3447374 (1969-06-01), Cohn et al.
patent: 3523186 (1970-08-01), Cohn et al.
patent: 3596510 (1971-08-01), Paine
patent: 3623366 (1971-11-01), Rowell
patent: 3640134 (1972-02-01), Hop
patent: 3745338 (1973-07-01), Joyce
patent: 4019034 (1977-04-01), Blom et al.
patent: 4090408 (1978-05-01), Hedrick
patent: 4207766 (1980-06-01), Ruben et al.
patent: 4218744 (1980-08-01), Pratt et al.
patent: 4258422 (1981-03-01), Dougherty et al.
patent: 4275382 (1981-06-01), Jannotta
patent: 4441157 (1984-04-01), Gerchman et al.
patent: 4451894 (1984-05-01), Dougherty et al.
patent: 4471656 (1984-09-01), Sanders et al.
Kennedy Roger C.
Stevens Glenn G.
The Boeing Company
Wise Edward J.
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