Merlin vs Raptor - NASASpaceFlight.com
2020年11月12日 · Ok, thanks. So the turbines in Raptor wear less than in Merlin. That is a big reuse issue as Raptor will be used more often over time. I knew changes fuels changes most …
Raptor vs. BE4 Thread
2019年8月2日 · The calculated exit pressure on the SpaceX Merlin engine is also estimated to be 64 kPa, perhaps because it came from the same design team. It is not known what expansion …
Raptor vs. BE4 Thread - NASASpaceFlight.com
2023年5月22日 · The Raptor engine is a reusable methane-oxygen staged-combustion engine that powers the Starship system and has twice the thrust of the Falcon 9 Merlin engine. …
SpaceX Raptor engine (Super Heavy/Starship Propulsion)
2019年2月21日 · SpaceX Merlin architecture is simpler than staged combustion (eg SSME or RD), but it has world record for thrust/weight & thrust/cost engine. Raptor has better Isp, but …
SpaceX Raptor engine - General Thread 4 - NASASpaceFlight.com
2023年9月18日 · Re: SpaceX Raptor engine - General Thread 4 « Reply #2556 on: 10/05/2023 03:19 pm » I wonder if they make design changes to the Raptors and skip numbers kind of like …
SpaceX Raptor engine - General Thread 2
2019年9月8日 · First post after lurking on various threads for a long time. I noticed in the Written reevaluation of the 2014 final environmental impact statement for the SpaceX Texas launch …
SpaceX Raptor engine - General Thread 4 - NASASpaceFlight.com
2023年5月13日 · RS-25 had both clustering and a fairly decent flightrate in its favor, but not as much as Merlin. Raptor will also have the same things going for it but more than doubled as …
SpaceX Raptor engine (Super Heavy/Starship Propulsion)
2017年10月7日 · Question for the thread: I know the Block 5 merlin has been tested to 145% thrust without issue- assuming the raptor had an equivilant level of engineered reserve, Given …
SpaceX Raptor engine - General Thread 4 - NASASpaceFlight.com
2023年7月20日 · What SpaceX did with Merlin - making a booster engine that is deep throttleable - as such was previously almost unheard of. They achieved that, too with a pintle injector. Now …
Raptor vs. BE4 Thread - forum.nasaspaceflight.com
2023年5月22日 · Raptor engine iterates faster than SSME? Raptor 1 used at least 60 engines and verified for 30000 seconds, with a total of less than 600 starts. Then the entire engine …