>>63867602
>>63867161
>Probably. And most likely fluidity TVC from Boeings ICE, FATE, X-36, and X-45 studies and programs.


Then there was Boeing Tailless Advanced Fighter Aircraft (TAFA) that proceeded ICE, Future Aircraft Technology Enhancements (FATE), Northrop Grumman Supersonic Tailless Air Vehicle (STAV), Lockheed Martin Efficient Supersonic Air Vehicle Exploration (ESAV) part of US Air Force Research Laboratories (AFRL) EXPanded MDO for Effectiveness based DesIgn TEchnologies EXPEDITE, and some more I'm surely forgetting.

>ICE:
https://apps.dtic.mil/sti/pdfs/ADB212813.pdf
https://apps.dtic.mil/sti/pdfs/ADB232172.pdf
https://apps.dtic.mil/sti/pdfs/ADB212361.pdf

>TAFA:
https://apps.dtic.mil/sti/pdfs/ADA386872.pdf

>FATE:
Boeing's FATE:
https://man.fas.org/dod-101/sys/ac/docs/bfrptpa4/sld001.htm
Lockheed Martin's FATE:
https://man.fas.org/dod-101/sys/ac/docs/fatereport/sld001.htm

>NG STAV:
https://apps.dtic.mil/sti/pdfs/ADA482575.pdf