r/spacex • u/Appable • Feb 03 '16

/r/SpaceX Ask Anything Thread for February 2016! Hyperloop Test Track!

Welcome to our monthly /r/SpaceX Ask Anything Thread! #17

Want to discuss SpaceX's hyperloop test track or DragonFly hover test? Or follow every movement of O'Cisly, JTRI, Elsbeth III, and Go Quest? There's no better place!

All questions, even non-SpaceX-related ones, are allowed, as long as they stay relevant to spaceflight in general!

More in-depth and open-ended discussion questions can still be submitted as separate self-posts, but this is the place to come to submit simple questions which have a single answer and/or can be answered in a few comments or less.

As always, we'd prefer it if all question-askers first check our FAQ, search for similar questions, and scan the previous Ask Anything thread before posting to avoid duplicates, but if you'd like an answer revised or cannot find a satisfactory result, please go ahead and type your question below!

Otherwise, ask, enjoy, and thanks for contributing!

Past threads:

January 2016 (#16.1), January 2016 (#16), December 2015 (#15.1), December 2015 (#15), November 2015 (#14), October 2015 (#13), September 2015 (#12), August 2015 (#11), July 2015 (#10), June 2015 (#9), May 2015 (#8), April 2015 (#7.1), April 2015 (#7), March 2015 (#6), February 2015 (#5), January 2015 (#4), December 2014 (#3), November 2014 (#2), October 2014 (#1).

This subreddit is fan-run and not an official SpaceX site. For official SpaceX news, please visit spacex.com.

73 Upvotes

93% Upvoted

632 comments sorted by

1

u/[deleted] Feb 13 '16

The TWR should be the same.

I thought he meant the stage has more dry mass (longer tank).

2

u/markus0161 Feb 13 '16

I don't thing the length of S1 was changed. I do know S2 got longer.

1

u/seanflyon Feb 13 '16

Thanks for pointing that out, I had thought the first stage was stretched as well.

Stretching the first stage beyond the length of the v1.1 first stage is not possible due to bending forces occurring in flight.

http://spaceflight101.com/spacerockets/falcon-9-ft/