Helicopter Sizing by Statistics - Faculty of Aerospace Engineering
Helicopter Sizing by Statistics - Faculty of Aerospace Engineering
Helicopter Sizing by Statistics - Faculty of Aerospace Engineering
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AHS Forum 58, June 2002<br />
Main Rotor:<br />
Ω = 2673.<br />
Ω<br />
ε ε<br />
/ D 0<br />
. 829<br />
D<br />
where is in [ RPM] and is in [ m]<br />
( AVER = 6%, MAX = 35%, R = . 9630).<br />
Ω RPM = 3475.<br />
/ D<br />
ε ε<br />
[ ]<br />
0. 828<br />
TR<br />
( AVER = 7%, MAX = 16%, R = . 9737)<br />
or<br />
Main & Tail Rotor Angular Velocity (cont.)<br />
Tail Rotor:<br />
Ω<br />
D<br />
[rad / sec]<br />
where is in [ m].<br />
TR<br />
=<br />
364. /<br />
D<br />
0. 828<br />
TR<br />
Main Rotor Angular Velocity (RPM)<br />
800<br />
600<br />
400<br />
200<br />
0<br />
Database configurations<br />
Estimation<br />
0 200 400 600 800<br />
Main Rotor Angular Velocity Estimation (RPM)<br />
<strong>Faculty</strong> <strong>of</strong> <strong>Aerospace</strong> Eng., Technion - I.I.T.<br />
14
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