Item 0907

DESIGN: Unicopter ~ Trim, Stability & Control - Trim - Lateral Solution

Symbol Definitions - Flight Dynamics

Drawing:

View looking forward.

See Prouty, page 531, Figure 8.28; for conventional helicopter and pictorial meaning of symbols.

  Hover:

The Three Equilibrium Equations:

Y: - (TP * sin(Ya) ) + (TS * sin(Ya)) = G.W. * sin(Φ)

R: (TP * cos(Ya) * (yP + yCG)) - (TS * cos(Ya) * (yS + yCG)) = 0

N: (QP * cos(Ya)) - (QS * cos(Ya)) = 0

Rewritten Equations:

XXX

Values:

For arm lengths see: 0899.html

For drag see: 0903.html

 

 

Solutions:

Φ = 0 degrees

b1S = not used

Note

 

  Forward Flight:

Note

 

Note

 

 Notes:

See: DESIGN: UniCopter ~ Rotor - Disk - Location of Center of Thrust

Back to top | UniCopter Home Page

Last Revised: May 9, 2002