Apparently, it has now been decided to have 33 engines on Super Heavy.
Also, it is mention only the engines in the middle will gimbal. (Makes
sense for landing since only those will fire up). But just trying to understand the torque aspect. Wouldn't engines on periphery have more influence on direction of thrust?
In article <MHHII.17161$7H7.1656@fx42.iad>,
jfmezei.spamnot@vaxination.ca says...
https://techstory.in/spacex-plans-to-boost-starship-raptor-engine- performance/#:~:text=As%20SpaceX%20managed%20to%20boost,only%20rocket% 20improves%20its%20acceleration.
Also, it is mention only the engines in the middle will gimbal. (Makes
sense for landing since only those will fire up). But just trying to
understand the torque aspect. Wouldn't engines on periphery have more
influence on direction of thrust?
Yes, but you really don't need the outer engines to gimbal. The inner engines have more than enough control authority.
Apparently, it has now been decided to have 33 engines on Super Heavy.
Wasn't it originally 37 or 39 ?
Assuming payload goals are maintained, the ability to drop from 37 down
to 33 would be excellent news in terms of performance of engines as well
as weight of the steel ship.
On the other hand, if 33 is the maximum number they can physically fit
inside the fuselage, this could mean reduced payload at launch. (Once launched fewer engines can run for longer time, but at launch, you need
that extra "oumph!" to lift all the fuel, the steel rocket and the payload.
Also, it is mention only the engines in the middle will gimbal. (Makes
sense for landing since only those will fire up). But just trying to understand the torque aspect. Wouldn't engines on periphery have more influence on direction of thrust?
(asking only on theoretical, I realise that costs would be higher to get
all those engines to gimbal instead of a few in the core ect)
Or is the distance betwween periphery and core engines relative to total length of Super Heavy + Starship make any difference in torque too small
to be of consideration?
Apparently, it has now been decided to have 33 engines on Super Heavy.
Wasn't it originally 37 or 39 ?
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