Using Prouty's calculations, the Robinson R22 Beta would have a collective (root) pitch of 14.5-degrees in hover at GW, if it used a 0012 airfoil. It actually uses a 63-015 airfoil, and therefor the pitch should be slightly less. The blades have -7-degrees of twist. The blade loading in hover at GW is 91-lb/sq-ft.
For comparison, the Schweizer/Hughes 300C uses an 0015 airfoil and it's blades have -8.7-degrees of twist. The blade loading in hover at GW is also 91-lb/sq-ft.
Last edited by Dave_Jackson; 4th Sep 2003 at 14:54.