3 ms·
Depends on your definition of aeroplane: https://en.wikipedia.org/wiki/Skylon_%28spacecraft%29#SABRE_engines https://en.wikipedia.org/wiki/Skylon_%28spacecraft%
by robin_reala 8y ago
Depends on your definition of aeroplane: https://en.wikipedia.org/wiki/Skylon_%28spacecraft%29#SABRE_engines https://en.wikipedia.org/wiki/Skylon_%28spacecraft%29#SABRE_...