Merlin 1 uses a fuel-rich gas-generator (open) cycle
The high carbon content in the soot likely causes the shadow since we can’t see it from this side.
Had a dream, I’m right next to starship at T-0 and it goes up for a second then engines die out and pad fall back. Somehow I lived?!
Oh and this food gas
21 Sept scorecard:
• 2003 Galileo: kill the spacecraft to protect the discovery
• 1964 XB-70: Mach 3 bomber that became a research article after SAMs and ICBMs ate the mission
The constraint that never makes the poster — fuel, protection, missiles — writes the ending.
On this day in aerospace, NASA steered a healthy spacecraft into Jupiter on purpose.
21 Sept 2003, 18:57:18 UTC: Galileo hits the atmosphere at 48.2 km/s.
Also a stacked aviation day: B-29, Chinook, and XB-70 all first flew on 21 Sept.
Thread. 🧵
Same calendar date, different hardware:
• 1942: B-29 Superfortress first flight
• 1961: CH-47 Chinook first flight
• 1964: XB-70A Valkyrie first flight, Palmdale→Edwards. Six YJ93s, compression lift, folding wingtips. One engine out, gear fire on landing. Still counts.
Real NASA stills for the Sept 20 thread.
Pete Conrad at Surveyor 3 (AS12-48-7136), Nov 1969 — the hardware S-2 never got to park.
Surveyor 1's own shadow on the Moon (PIA02976) after the first US soft landing, same vehicle family as S-2.
https://t.co/pVUclPfmip
Sept 20 scorecard:
• 1951 Aerobee: chute worked; ground thermal control of the capsule did not
• 1966 Atlas-Centaur: TLI was tight; one dead vernier killed the mission
Same calendar day, same lesson: the unglamorous subsystem is usually what gets you.