Elon Musk
@PalmerLuckey Fighter aircraft with actual people in them will seem extremely unwise in retrospect.
Btw, what’s holding you back from doing Mach ~1.5? Compressibility drag is lower there than at 0.95.
Air density drops exponentially with altitude, whereas speed-based drag is merely a square. https://t.co/42HlNCxTxk
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