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Hey Gattis et al.,
Here's a preliminary set of configs for the Pyrios RP-1/LOX Advanced Boosters. I also created a scenario with a 150mT probe (special config included called SLSprobe) to test this to a 200 km circular orbit.
Basically, I computed the internal volume of the boosters, assumed 80% of that volume for tankage, then computed the relative volume and mass of the propellant. Works out to a hair over 1 million kgs propellant a piece. For the mass of the empty Pryios booster, I assumed a similar mass ratio as for the core, 10.48. I also upped the thrust on the core and boosters to represent 104% throttle, which was standard for the SSMEs, although I don't rightly know if the F-1B will have this capability. Even with the boosters at 100% rated thrust, the Liftoff thrust:weight ratio is still just a hair under 1.2, so it's no big deal if you wish to down-rate them back to 100%, 16MN.
Anyhow, let me know what you think. It's a close call getting that 150mT probe to orbit, but it's doable. Max g-loading is right before booster sep, at right about 4-g.
Note: I haven't yet tinkered with the autopilot, or g-load limiting thrust, so a little bit of user input to get to orbit is recommended. Right now, the core's AP is aiming for 110km, which doesn't leave a lot of wiggle room for the overloaded EUS to work. I shoot for 170 km or so manually, then circularize at 200 at first ApA after SECO.
Cheers!
Here's a preliminary set of configs for the Pyrios RP-1/LOX Advanced Boosters. I also created a scenario with a 150mT probe (special config included called SLSprobe) to test this to a 200 km circular orbit.
Basically, I computed the internal volume of the boosters, assumed 80% of that volume for tankage, then computed the relative volume and mass of the propellant. Works out to a hair over 1 million kgs propellant a piece. For the mass of the empty Pryios booster, I assumed a similar mass ratio as for the core, 10.48. I also upped the thrust on the core and boosters to represent 104% throttle, which was standard for the SSMEs, although I don't rightly know if the F-1B will have this capability. Even with the boosters at 100% rated thrust, the Liftoff thrust:weight ratio is still just a hair under 1.2, so it's no big deal if you wish to down-rate them back to 100%, 16MN.
Anyhow, let me know what you think. It's a close call getting that 150mT probe to orbit, but it's doable. Max g-loading is right before booster sep, at right about 4-g.
Note: I haven't yet tinkered with the autopilot, or g-load limiting thrust, so a little bit of user input to get to orbit is recommended. Right now, the core's AP is aiming for 110km, which doesn't leave a lot of wiggle room for the overloaded EUS to work. I shoot for 170 km or so manually, then circularize at 200 at first ApA after SECO.
Cheers!