The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 18, 1990
Filed:
Sep. 12, 1988
Applicant:
Inventor:
Michel Perdu, Frejus, FR;
Assignee:
Aerospatiale Societe Nationale Industrielle, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F / ; G01F / ; G01F / ; B64G / ;
U.S. Cl.
CPC ...
364442 ; 7386141 ; 364510 ;
Abstract
To monitor continuously the propellant consumption of a space vehicle equipped with a plurality of propulsion units operated by activator means according to activation instructions received by the activator means, the number N of activation instructions applied to each propulsion unit from a reference time and their cumulative duration S are memorized. The mass M of propellant consumed since the reference time by each propulsion unit is computed from the equation: