Sikorsky high-speed rotorcraft studies

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flateric

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1991 Sikorsky high-speed rotorcraft studies
 

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Re: 1991 Sikorsky high-speed rotorcraft studies

VDTR - variable diameter tilt-rotor
 
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?
 
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.
 
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.
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Matej, What is APR? I would certainly like to read up on these efforts.
 
Re: 1991 Sikorsky high-speed rotorcraft studies

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

V5N5 is still available.
 
Re: 1991 Sikorsky high-speed rotorcraft studies

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

V5N5 is still available.
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Thanks for the information!
 

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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 ! ;)
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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
 
It appears with the Sikorsky HEX investigations beginning, they are once again looking at Tilt-wing with some level of seriousness.
 
yasotay said:
It appears with the Sikorsky HEX investigations beginning, they are once again looking at Tilt-wing with some level of seriousness.
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Well, after the ABC concept got rejected for vibration reasons (and I assume the person whose pet project was ABC finally retired), there's really only one way to go fast and take off vertically.
 

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