5 ms·
Virgin Galactic only reached Mach 3 speed and was nowhere near achieving orbital velocity which requires Mach 23 (28,000 kph) ie order of magnitude more difficu
by garyclarke27 5y ago
Virgin Galactic only reached Mach 3 speed and was nowhere near achieving orbital velocity which requires Mach 23 (28,000 kph)
ie order of magnitude more difficult.
- mauvehaus 5y agoSerious question: while I understand making the comparison in Mach number to illustrate the difference in speed, is the speed of sound actually well defined near or above the Karman line?
- hoseja 5y agoI had no idea either so I asked, apparently it's about 0.85 Mach: https://www.wolframalpha.com/input/?i=speed+of+sound+at+100+km https://www.wolframalpha.com/input/?i=speed+of+sound+at+100+...