« Okay, so... | Main | Speaking of doing the math »

Tuesday, 21 October 2014

Comments

The 3 second average may be 8.5, but the peak could be over 11.

True enough; that'd be the "wildly nonuniform" thing. I suppose it might make sense to design the motor for extra thrust right at the beginning, for a quick getaway.
Or... hm. We know the Δv, and may guess that the ISP is around that for APCP (call it 220 "seconds"; I hate that unit). That means, for a 222 m/s total boost, the mass of the capsule + rocket system will decrease by roughly 10% during the burn, so with constant thrust the acceleration will indeed vary significantly, peaking right at the end.

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Working...
Your comment could not be posted. Error type:
Your comment has been saved. Comments are moderated and will not appear until approved by the author. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.

Working...

Post a comment

Comments are moderated, and will not appear until the author has approved them.

Your Information

(Name and email address are required. Email address will not be displayed with the comment.)

My Photo

Disclaimers

  • Have you spotted a fnord lately?
  • The Secretary disavows any knowledge of my actions.
  • The Gnomes of Zurich are not responsible for any content on this site.

Blogroll: 2012!

Blog powered by Typepad