Effects of low bond number liquid motions on spacecraft attitude

Title

Effects of low bond number liquid motions on spacecraft attitude

 Author

van den Dam, R.F.
Vreeburg, J.P.B.

Institution

National Aerospace Laboratory NLR

 Date

1989-10-20

 Abstract

The Introduction gives a short review of the effects that onboard liquid may have on the dynamics of the spacecraft. A distinction Is made between arbitrarily moving craft and spin-stabilized vehicles. The modelling of rotating liquid behaviour is very complicated and generally allows only to make predictions on the stability behaviour of a spinning spacecraft. A flight experiment with a model satellite, with liquid in an annular tank, during parabolic aircraft flight is described. From a filmed record of the unconstrained motion, the attitude of the satellite is reconstructed. Details of the image processing scheme are given. The numerical simulation of the motion of the model satellite is explained. The liquid is inviscid and is assumed to move in the tank in two directions only. I.e. radial motion is neglected. Surface tension effects are important and are fully accounted for. The angular rates of the model following a short-duration torque, are presented. Plots of the liquid motion are included.

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 Publisher

Nationaal Lucht- en Ruimtevaartlaboratorium

 Access restriction

Campus only

 Source

NLR Technical Publication TP 89352 L

 Part of collection

Aerospace Engineering Reports

 Document type

report

 Rights

(c) 1989 National Aerospace Laboratory NLR
Files
PDF 89352.pdf 9.69 MB
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