PPRuNe Forums - View Single Post - BA609 is now flying - will it change the industry?
Old 7th Jul 2004, 18:54
  #51 (permalink)  
Lu Zuckerman

Iconoclast
 
Join Date: Sep 2000
Location: The home of Dudley Dooright-Where the lead dog is the only one that gets a change of scenery.
Posts: 2,132
Likes: 0
Received 0 Likes on 0 Posts
Thumbs up Let me count the ways......

To: diethelm

Two reasons (among many others) come to mind. The level of reliability does not meet the requirements for a presidential helicopter (Powered lift aircraft) and in the helicopter mode it can’t autorotate. Its rate of descent is 4-6000 feet per minute. When in the airplane mode it was assumed that the hydraulic servos would only be used to control the pitch of the Prop Rotor ™ which would be minimal however the design of the Prop Rotor ™ allows it to move due to gyroscopic forces during maneuvering causing a high demand on the hydraulic system effecting it’s reliability.


Lu Zuckerman is offline