Classy Quote logo
  • Home
  • Categories
  • Authors
  • Topics
  • Who said

Henry Spencer Quotes

Henry Spencer quote from classy quote

Supplying fuel for a Mars expedition from the lunar surface is often suggested, but it's hard to make it pay off - Moon bases are expensive, and just buying more rockets to launch fuel from Earth is relatively cheap.

~ Henry Spencer

Henry Spencer Moon Earth Mars

The Orion capsule uses an escape system quite like that of the Apollo spacecraft in the 1960s and 70s: an 'escape tower' containing a solid-fuel rocket that will pull it up and away from Ares I in a pinch.

~ Henry Spencer

Henry Spencer Escape Rocket Tower

Whether solid rockets are more or less likely to fail than liquid-fuel rockets is debatable. More serious, though, is that when they do fail, it's usually violent and spectacular.

~ Henry Spencer

Henry Spencer Fail Serious Than

Sometimes people wonder why aeroplanes are so cheap and rockets are so expensive. Even the most superficial comparison shows one obvious difference: aeroplane engines use outside air to burn their fuel, while rockets have to carry their own oxidisers along.

~ Henry Spencer

Henry Spencer People Wonder Why

Reusable rockets promise much easier testing because you should usually get them back, and you can debug as you go rather than having to get everything perfect the first time.

~ Henry Spencer

Henry Spencer Time Perfect You

In 1960-61, a small group of female pilots went through many of the same medical tests as the Mercury astronauts and scored very well on them - in fact, better than some of the astronauts did.

~ Henry Spencer

Henry Spencer Small Better Group
  • Classy Quote

    ClassyQuote has been providing 500000+ famous quotes from 40000+ popular authors to our worldwide community.

  • Other Pages

    • About Us
    • Contact Us
    • Privacy Policy
    • Terms of Use
  • Our Products

    • Chrome Extention
    • Microsoft Edge Add-on
  • Follow Us

    • Facebook
    • Instagram
Copyright © 2025 ClassyQuote. All rights reserved.