Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Aeronautical vehicle
Reexamination Certificate
2006-08-22
2006-08-22
Camby, Richard M. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Aeronautical vehicle
C701S226000
Reexamination Certificate
active
07096095
ABSTRACT:
The invention describes a method for the fuel-optimized selection of a configuration of thrusters on a spacecraft while resolving a linear optimization problem with an initialization phase for finding a first permissible solution and a subsequent iteration phase, in which proceeding on the permissible solution an iterative optimization of an efficiency criterion takes place. In each iteration step a scaled iteration gradient is formed, and the iteration gradient is multiplied with a limiting factor for a maximum iteration step width, which is formed while taking at least one boundary value condition for a permissible solution into account.
REFERENCES:
patent: 5130931 (1992-07-01), Paluszek et al.
patent: 5195172 (1993-03-01), Elad et al.
patent: 5310143 (1994-05-01), Yocum et al.
patent: 5428712 (1995-06-01), Elad et al.
patent: 6208915 (2001-03-01), Schutte et al.
patent: 6347262 (2002-02-01), Smay et al.
patent: 6823675 (2004-11-01), Brunell et al.
patent: 0 750 239 (1996-12-01), None
patent: 0750239 (1996-12-01), None
patent: 0977687 (2001-05-01), None
patent: WO 98/49058 (1998-11-01), None
N. Karmarkar, “A N ew Polynomial-Time Algorithm f or Linear Programming”Combinatorica4(4) (1984) pp. 373-395.
Chapman et al., “Drag-Free Control Analysis and Algorithm Design For The STEP Mission”, 5thESA International Conference On Spacecraft Guidance, Navigation and Control Systems, 'Online! Oct. 22, 2002, XP-002348236.
Karmarkar, “A New Polynomial-Time Algorithm For Linear Programming”, Combinatorica, (4) (1984) pp. 373-395, XP-00747276.
Bronstein et al., “Lineare Optimierung”, Taschenbuch Der Mathematick, 1989, pp. 695-717, XP002070357.
European Search Report dated Oct. 7, 2005 w/English translation of relevant portion (pp. 4).
Chemnitz Joachim
Fischer Horst-Dieter
Camby Richard M.
EADS Astrium GmbH
LandOfFree
Method for the fuel-optimized selection of a thruster... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the fuel-optimized selection of a thruster..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the fuel-optimized selection of a thruster... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3717130