Path: Propulsion/Rocket
% Compute the plume forces and torques on a set of elemental areas.
While designed for far field calculations it uses z buffering to
ensure that mass is conserved.
This routine works in the metric system!!!!
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Form:
[f, t] = Plume( thrust, rREA, tREA, uREA, gREA, normal, r, area, tArea, angInf, sigma )
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Inputs
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thrust (m) Rocket engine thrust (N)
rREA (3,m) Vector from c.m. to the rocket engine (m)
tREA (m) Chamber temperature of the thruster
uREA (3,m) Thruster unit plume vector
gREA (m) Ratio of specific heats for the gas
normal (3,n) Surface normal vector
r (3,n) Vector from c.m. to the panel center (m)
area (n) Elemental area (m^2)
tArea (n) Average surface temperature
angInf Plume turning angle at infinity (usually near ΒΌ/2 rad);
sigma (2) Surface accommodation coefficents
[normal, tangential]
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Outputs
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f (3,m) Force vectors
t (3,m) Torque vectors
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References: Fox, S.M. "Effects of Plume Impingement on a Momentum Bias
Communications Satellite," J. Spacecraft and Rockets, 20(1)
55-60.
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Math: Linear/Cross Math: Linear/Dot Math: Linear/Mag Math: Linear/Unit
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