Episode 107: DOWNLINK--Scott Wray

  • This week in SF history
  • Spaceflight news
    • JWST latch issue (spacenews.com)
    • Short and sweet
      • KZ-21 will be 4.5m diameter, 20 tons to LEO, and engine testing next year, contract for four KZ-1A launches early next year in the same week (from mobile platform *whew*) (HT Sam Moore: nasaspaceflight.com)
      • SEDS UCF IREC does full scale static fire (youtube.com)
      • Apple’s looking at internet constellation (spacenews.com)
  • Questions, comments, corrections
    • Book club 2.0
    • @space_mace: episode 104. The Chinese com sat has a throughput of 20 Gigabits per second, not Gigabytes per second.
    • /u/Symmetry81: ISP is more handy than Ben thinks
    • Relates to fuel usage, which isn’t always exhaust velocity, see jet engines
    • /u/Nerobro: More about Redstone/Atlas
    • Early rocket engines (and even many today) don't throttle well, so a good method for dropping to a lower throttle setting would be to shutdown, and drop off engines, like the atlas did.
    • Jonathan Aguilar via email: Modified Newtonian Dynamics
      • To be updated when posted on Reddit
  • Interview: Scott Wray, Extravehicular Activities Trainer/Flight Controller
Magellan in processing, before IUS integration

Magellan in processing, before IUS integration

Magellan in Atlantis' cargo bay

Magellan in Atlantis' cargo bay