Nuclear Logistics Aircraft - 1968

[Graham1973]

While searching the NTRS for information on subsonic airliner designs, I found what seems to be the last nuclear powered aircraft proposal.

It was a hybrid aircraft using conventional fuel for take off and then transitioning to nuclear power at cruising speed/altitude

See:

1. Preliminary Study Of A Nuclear Cruise Airplane Having A Helium-Cooled Thermal Reactor

https://ntrs.nasa.gov/citations/19720063062

2. Comparative Flight Envelopes for Three Different Design Point Subsonic Nuclear Airplanes
https://web.archive.org/web/2010052...casi.ntrs.nasa.gov/19720063064_1972063064.pdf

 

[hesham]

By the way;

we had it here;

http://www.secretprojects.co.uk/forum/index.php/topic,855.45.html

 

[Grey Havoc]

I found what seems to be the last nuclear powered aircraft proposal.

I assume you meant the last known such official proposal of the 1960s.