Reentry Air Data System for a Sub-orbital Spacecraft Based on X-34 ...
Reentry Air Data System for a Sub-orbital Spacecraft Based on X-34 ...
Reentry Air Data System for a Sub-orbital Spacecraft Based on X-34 ...
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2007 USU Industry Day<br />
Flow Model<br />
• The FADS algorithm uses the pressures measured<br />
by a matrix (at least five) of flush mounted pressure<br />
ports to produce a full air data state.<br />
2 2<br />
( ) cos sin<br />
p = qc ⎡<br />
⎣ + ⎤<br />
⎦+<br />
p<br />
Cp<br />
Cp<br />
FADS flow model <str<strong>on</strong>g>for</str<strong>on</strong>g><br />
a spherical nosecap<br />
2 θ θ ε θ ∞<br />
( )<br />
( )<br />
( θ )<br />
p − p<br />
5<br />
= = cos − sin<br />
qc<br />
4<br />
∞ 2 2<br />
θ θ θ<br />
( θ )<br />
p − p<br />
= =<br />
qc<br />
cos<br />
∞ 2<br />
θ θ<br />
Potential flow <str<strong>on</strong>g>for</str<strong>on</strong>g> a sphere<br />
(M 1)<br />
8
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