Rockwell unknown VSTOL transport aircraft of 1977

[hesham]

Hi,

I displayed this aircraft before,but I can't identify it,who can ?.

Low speed aerodynamic characteristics of a vectored thrust V/STOL transport with two lift/cruise fans
Renselaer, D. J
NASA-CR-152029
https://ntrs.nasa.gov/citations/19770022151
[Admin - updated link and added report details]

 

[Jemiba]

I think, it's the entry for the A V/STOL competition, here's another
picture from Aviation Week 1977:

 

[hesham]

a Model for it.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19770022151_1977022151.pdf

 

[Vahe Demirjian]

I think, it's the entry for the A V/STOL competition, here's another
picture from Aviation Week 1977:

The aircraft in this artist's conception is the Rockwell (North American) NA-420. The NA-420 project is discussed elsewhere at this thread:
https://www.secretprojects.co.uk/th...30-and-na-431-us-navy-type-a-proposals.15481/

 

[riggerrob]

This reminds me of a proposal to replace the Lockheed S-3 Viking with a VTOL with tilting turbo-fan engines. The first sketches included gull wings and a canard, but - after wind-tunnel testing - they concluded that the canard was not needed because the huge engine cowlings generated sufficient lift to balance the airplane in cruise.

 

[aim9xray]

That would be the Grumman Model 698. Please see SPF Grumman Model 698 Thread for further info.

 

[overscan (PaulMM)]

I located the original report and fixed the link in the first post.

It's a Rockwell report, and it links the tested design to an earlier Rockwell report published by SAE:

Three-Engine Two-Fan Navy Multimission V/STOL Aircraft Considerations
J.C. Ford, Rockwell International
https://www.sae.org/publications/technical-papers/content/751104/
Wing design is obviously different but I think it's part of the Rockwell VSTOL Type A lineage. Probably will merge this topic to https://www.secretprojects.co.uk/th...30-and-na-431-us-navy-type-a-proposals.15481/

 

[aim9xray]

Well, this Rockwell has neither canards nor tilting nacelles as described by @riggerrob (it has fixed nacelles with tilt nozzles). His description sounds like the 698, but I could be wrong. Wouldn't be the first time!

 

[overscan (PaulMM)]

Oh right - sorry - I thought you were replying to the whole topic, you were replying to Riggerob''s off-topic post You are correct As you were.