Dr. C. Scott Ananian (cananian) wrote,
Dr. C. Scott Ananian

SpaceX preliminary verdict: nozzle hit & tank slosh

For any of you who've been following the flight tests of SpaceX's Falcon rocket, you may be interested to hear that:

SpaceX CEO Elon Musk has noted that the preliminary assessment of the Falcon I flight shows that the second stage shut down only a minute before schedule - and still managed to deploy its satellite mass simulator ring.

The shutdown appears to have been caused by the sloshing of propellant in the LOX tank, increasing observed oscillation, which would normally have been successfully dampened out by the second stage Thrust Vector Control (TVC) system. However, the impact on the second stage nozzle during separation caused a 'hard slew' correction, over-compensating previously simulated scenarios.

This analysis is preliminary, and SpaceX hasn't posted it in its official updates page yet. But, if confirmed, this buttresses the case that their recent test was largely successful.

Tags: spacex

  • Rust is not fast

    There are plenty of safe high-level languages in the world; JavaScript, for example. Rust is different: it's supposed to be safe and fast. But…

  • JavaScript in asm.js (and a little rust)

    Over on twitter, Tim Caswell mentioned, "I think high-level scripting language on top of something like rust.zero would make for an amazing OS."…

  • SDR 0.7

    Happy Thanksgiving! Here's SDR 0.7 to celebrate the holiday. Version 0.7 incorporates a number of dance engine refactorings completed shortly after…

  • Post a new comment


    Anonymous comments are disabled in this journal

    default userpic

    Your reply will be screened

    Your IP address will be recorded