• Hi Guest! Forum rules have been updated. All users please read here.

Sikorsky high-speed rotorcraft studies

flateric

CLEARANCE: Above Top Secret
Staff member
Top Contributor
Senior Member
Joined
Apr 2, 2006
Messages
8,781
Reaction score
204
Re: 1991 Sikorsky high-speed rotorcraft studies

VDTR - variable diameter tilt-rotor
 

Sentinel Chicken

American 71 Heavy, contact departure 126.47
Joined
Jan 17, 2006
Messages
575
Reaction score
1
Website
www.tailsthroughtime.com
Re: 1991 Sikorsky high-speed rotorcraft studies

Ahhhh! Looking at the picture that makes a helluva lot more sense! Thanks! Was the VDTR concept a proprietary Sikorsky concept?
 

Matej

Multiuniversal creator
Joined
Feb 13, 2006
Messages
2,617
Reaction score
35
Website
www.hitechweb.genezis.eu
Re: 1991 Sikorsky high-speed rotorcraft studies

A lot of info and more designs from Sikorsky and Bell are in APR volume 5 no 5, pg. 30 - 37. They are from NASA papers.
 

yasotay

CLEARANCE: Top Secret
Senior Member
Joined
Oct 19, 2006
Messages
1,972
Reaction score
72
Re: 1991 Sikorsky high-speed rotorcraft studies

Matej said:
A lot of info and more designs from Sikorsky and Bell are in APR volume 5 no 5, pg. 30 - 37. They are from NASA papers.
Matej, What is APR? I would certainly like to read up on these efforts.
 

overscan

Administrator
Staff member
Joined
Dec 27, 2005
Messages
11,443
Reaction score
760
Re: 1991 Sikorsky high-speed rotorcraft studies

http://www.up-ship.com/

V5N5 is still available.
 

yasotay

CLEARANCE: Top Secret
Senior Member
Joined
Oct 19, 2006
Messages
1,972
Reaction score
72
Re: 1991 Sikorsky high-speed rotorcraft studies

overscan said:
http://www.up-ship.com/

V5N5 is still available.
Thanks for the information!
 

hesham

CLEARANCE: Above Top Secret
Joined
May 26, 2006
Messages
23,872
Reaction score
922

Attachments

aeroengineer1

CLEARANCE: Confidential
Joined
Jan 27, 2008
Messages
78
Reaction score
1
Re: 1991 Sikorsky high-speed rotorcraft studies

Jemiba said:
To my opinion, that's not a real project, but (as it is called in the paper) just a rotorcraft drag model,
used to test different configurations on the same basis. The addition of the mounting strut is
another evidence. Nevertheless an interesting paper ! ;)
I have to disagree with this statement. This very much looks to me like a project, though it may only be an effort that did not go very far. If this was just a standard reference model, they would have used a fuselage that was nondescript. Frequently models of this type do not have empanage surfaces. This mode has a novel empenage, windows are defined, and it is given an estimated weight class. The fact that the model is mounted on a strut is inconsequential, and in fact common for mounting a force model. I imagine the reason that this was not mounted on a sting is because the sting would have interfered with the empanage flow in a way that would negate the inverted v tail. I think that the real question is not if it is a project, but if it was ever intended a serious study for a production vehicle.

Adam
 
Top