The numbers, especially fuel economy, are staggering.
Never heard of it, thanks for posting!
https://www.thedrive.com/the-war-zone/36016/the-potentially-revolutionary-celera-500l-officially-breaks-cover
https://www.ottoaviation.com/
Quote:
Originally Posted by KNS
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There have been a lot of advances in material science, prop design and engines. 60ft is interesting. That is Global Hawk territory. I managed the Navy's version. Lot's of challenges.