3 ms·

Even that’s not interesting. It’s just an electric version of an antilag system, first developed in the 80s.

• wolverine876 3y ago
  Rockets were first developed 1,000 years ago. Nothing is interesting, by your reasoning.
  • jgeada 3y ago
    The liquid fuel rocket motor was only invented 98 years ago (https://www.nasa.gov/history/95-years-ago-goddards-first-liquid-fueled-rocket/ https://www.nasa.gov/history/95-years-ago-goddards-first-liq...) Though borderline possible, it is very hard for solid fuel rockets to make it to orbit, and they have horrible payload to total mass ratios. It all has to do with the specific impulse of the fuels, no solid fuel provides as much as hydrogen/oxygen.
    • pfdietz 3y ago
      It's not so much just the Isp -- rockets can easily get to orbit on LOX/RP-1; LOX-LH2 is not needed -- but also dry mass of the stage. Basically the entire solid rocket motor is a thrust chamber, and must be strong enough to withstand that pressure. In a pump fed liquid propellant rocket, this is not the case: the tanks need only withstand a pressure high enough to avoid cavitation in the pumps.