NGTE V/STOL Aircraft

[hesham]

Hi,

The National Gas Turbine Establishment NGTE had designed two rigid-rotor aircraft
designs,and the second was based on Bac One-Eleven.


http://www.flightglobal.com/FlightPDFArchive/1967/1967%20-%200089.pdf

 

[Triton]

Model of National Gas Turbine Establishment (NGTE) V/STOL aircraft.

A Series 200 BAC 111 modified with two contra-rotating circulation controlled rotors (shown above). In an effort to attack storage problems of tilt-and-fold rotors, NGTE created a rigid rotor with a circular/elliptical cross-section. Lift is generated by air blowing tangentially around the upper surface of the blades from narrow spanwise slots. The result is fewer, shorter blades and no need for flapping or drag hinges. Once the airflow to the slots is cut off, no significant lift is generated. With this rotor design, lift is independent of rotor speed. R&D on this program began in 1959.

Source:
http://www.aiaa.org/tc/vstol/unbuilt/
"Straight Up and Away" Flying Review International. May 1969: 47, 51

 

[hesham]

Hi,


here is a more clearer pictures to NGTE aircraft projects.


http://www.flightglobal.com/pdfarchive/view/1966/1966%20-%201549.html?search=NGTE

 

[hesham]

Hi,

http://archive.aviationweek.com/image/spread/19680624/107/2

 

[CJGibson]

These are CCR (Controlled Circulation Rotor or Circulation Control Rotor, I can't recall offhand) concepts and was developed by Prof Ian Cheeseman of the NGTE. Quite a bit of work went into it. I knocked up an article on it last century, but got sidetracked into something else.

Interesting stuff.

I might dig the piece out and tart it up.

Chris

 

[hesham]

From Aviation magazine 1967.

 

[hesham]

Hi,

NASA Technical Reports Server (NTRS)

ntrs.nasa.gov

Dr. Ian Cheeseman - Vertical Take Off and Landing Air-Liners

 

[hesham]

For sister TsrJoe.