North American Aviation D491-3-1 VTOL Jetliner

[Orionblamblam]

Drawing from Darold Cummings via AeroFranz of the NAA D491-3-1 VTOL jetliner from January, 1969. Work done for NASA.

 

[overscan (PaulMM)]

Cleaned up a bit more and scaled down. Interesting design....

 

[hesham]

Great find my dear Scott.

 

[Stargazer]

Thanks to Scott and Paul, and especially to Francesco (AeroFranz) for bringing this rarity to light!

 

[AeroFranz]

Apparently the fans are separate lift fans, and the nozzle on the propulsive turbofans could pivot to deflect thrust vertically.

 

[hesham]

Amazing project,thank you my dear AeroFranz.

 

[Grey Havoc]

Doing a bit of necromancy:

https://twitter.com/x/status/1965592035517497369

View: https://x.com/UnwantedBlog/status/1965592035517497369?ref_src=twsrc%5Egoogle%7Ctwcamp%5