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 />
χ 2 (Chi-squared) Test<br />
• The Chi-squared value is given by<br />
χ 2<br />
δ p =<br />
n−1<br />
∑<br />
i − 0<br />
And represents the<br />
probability the system has<br />
failed<br />
~> 1-Probability(χ 2 ) yields<br />
the probability the system is<br />
healthy<br />
For redundant systems, the<br />
system with better χ2 value is<br />
used.<br />
( )<br />
pi − qc 2 cos 2θ i + ε sin 2 { ⎡⎣<br />
θi ⎤⎦ + p } ∞<br />
2<br />
σ 2<br />
δ p<br />
24
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