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Thesis - Leigh Moody.pdf - Bad Request - Cranfield University

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Appendix D / Point Mass Dynamics<br />

_ _<br />

YR<br />

a,<br />

b<br />

YR<br />

a,<br />

b<br />

ZR XR XR ZR<br />

R<br />

( ω ⋅ P&<br />

− ω ⋅ P&<br />

) + ( P )<br />

A : = & P&<br />

+ 2 ⋅<br />

ϕ<br />

I,<br />

R<br />

17-9<br />

, b<br />

I,<br />

R<br />

a,<br />

b<br />

PY<br />

a,<br />

b<br />

Equation 17.5-5<br />

XR YR ZR XR vR 2 YR YR ZR XR ZR<br />

( ω ⋅ ω + ω&<br />

) ⋅ P − ( ω ) ⋅ P + ( ω ⋅ ω − ω&<br />

) ⋅ P<br />

I,<br />

R<br />

I,<br />

R<br />

ZR<br />

a,<br />

b<br />

I,<br />

R<br />

ZR<br />

a,<br />

b<br />

a,<br />

b<br />

ϕ<br />

I,<br />

R<br />

PY<br />

: =<br />

a,<br />

b<br />

I,<br />

R<br />

I,<br />

R<br />

I,<br />

R<br />

XR Y YR X<br />

R<br />

( ω ⋅ P&<br />

− ω ⋅ P&<br />

) + ( P )<br />

A : = P&<br />

& + 2 ⋅<br />

ϕ<br />

I,<br />

R<br />

a,<br />

b<br />

I,<br />

R<br />

a,<br />

b<br />

PZ<br />

a,<br />

b<br />

Equation 17.5-6<br />

a,<br />

b<br />

Equation 17.5-7<br />

XR ZR YR XR YR ZR XR YR hR 2 ZR<br />

( ω ⋅ ω − ω&<br />

) ⋅ P + ( ω ⋅ ω + ω&<br />

) ⋅ P − ( ω ) ⋅ P<br />

I,<br />

R<br />

I,<br />

R<br />

I,<br />

R<br />

a,<br />

b<br />

ϕ<br />

PZ<br />

I,<br />

R<br />

: =<br />

I,<br />

R<br />

I,<br />

R<br />

a,<br />

b<br />

I,<br />

R<br />

a,<br />

b<br />

Equation 17.5-8<br />

Replacing the body rates with Euler rates with a zero Euler roll angle,<br />

&P<br />

&<br />

XR<br />

a,<br />

b<br />

ϕ<br />

&P<br />

&<br />

XYZ<br />

YR<br />

a,<br />

b<br />

− 2 ⋅<br />

: =<br />

YR R R ZR R<br />

R<br />

R<br />

( P&<br />

⋅ Ψ&<br />

⋅ cΘ<br />

− P&<br />

⋅ Θ&<br />

) + ϕ ( P ) + ϕ ( P )<br />

ϕ<br />

+ 2 ⋅ Ψ&<br />

ϕ<br />

a,<br />

b<br />

XX<br />

− P<br />

R<br />

I<br />

YX<br />

YR<br />

a,<br />

b<br />

⋅<br />

I<br />

I<br />

XR<br />

a,<br />

b<br />

A<br />

XR<br />

a,<br />

b<br />

a,<br />

b<br />

: =<br />

I<br />

XX<br />

a,<br />

b<br />

( ) ( ) 2<br />

R 2 2 R XR R<br />

Ψ&<br />

⋅ cos Θ − P ⋅ &<br />

: = − P ⋅<br />

Θ<br />

⋅ Ψ&<br />

&<br />

R<br />

I<br />

⋅ cosΘ<br />

R<br />

I<br />

I<br />

+ P<br />

ZR<br />

a,<br />

b<br />

I<br />

a,<br />

b<br />

I<br />

XYZ<br />

a,<br />

b<br />

Equation 17.5-9<br />

Equation 17.5-10<br />

2 ( Ψ&<br />

R<br />

R R<br />

) ⋅ Θ ⋅ ⎟<br />

⎞<br />

I sin I cos I<br />

⎠<br />

⋅ ⎜<br />

⎛ Θ&<br />

& R<br />

I −<br />

Θ<br />

⎝<br />

Equation 17.5-11<br />

XR R ZR R<br />

R<br />

R<br />

( P&<br />

cΘ<br />

+ P&<br />

⋅ sΘ<br />

) + ϕ ( P ) + ϕ ( P )<br />

a,<br />

b<br />

XR<br />

a,<br />

b<br />

I<br />

A<br />

a,<br />

b<br />

YR<br />

a,<br />

b<br />

: =<br />

I<br />

YX<br />

a,<br />

b<br />

YYZ<br />

R R R R R<br />

( Ψ&<br />

& ⋅ cosΘ<br />

− 2⋅<br />

Θ&<br />

⋅ Ψ&<br />

⋅sin<br />

)<br />

: = P ⋅<br />

Θ<br />

I<br />

I<br />

I<br />

I<br />

a,<br />

b<br />

Equation 17.5-12<br />

I<br />

Equation 17.5-13

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