what for reply, Shevek23
I answer First ASTO Shuttle and SpaceX later
I know politic is not my big talent in AH.
But this Shuttle is best Compromise NASA can get in this TL, compare to OTL.
i notice i forgot the Payload data in Post (will be fix) but this shuttle carry lower payload as STS because it not using the High Pressure Engine with ISP of 452, But J-2Simplified with ISP 436 sec.
They consider in OTL briefly to Use four J-2S in Shuttle but with ten reuse, they dropped that for RS-25 with promise of hundred reuse, irony the RS-25 manage 10 reuse until it's junk...
use of J-2S the payload goes down considerably around -15%:
54895 pounds into 100 nm orbit at 28° Space Tug operation
27999 pounds into 100 nm orbit at 90° USAF mission
29983 pounds into 100 nm orbit at 55° for Spacelab and Space station III resupply
For Unmanned cargo version with S-IVB
85000 pounds into 100 nm orbit at 28° Space Tug operation or Hubble space telescope
43354 pounds into 100 nm orbit at 90° USAF mission
46425 pounds into 100 nm orbit at 55° for Spacelab and Space station III payload
original NASA wanted Shuttle Payload of 20000 pounds or 9072 kg in payload bay of 39 ft by 10 ftø or 12 meter by 3 meter ø
As the USAF join in that became 40000 pounds or 18144 kg for low Polar orbit, with payload bay of 60 by 15 feetø or 18 meter by 4.6 metersø
in simple words USAF wanted big spy sats in orbit and back.
on Cargo version i remember the Saturn INT-20 (first and third stage as launch rocket) and used this as base for Cargo version
but i not the first, at Boeing and Bellcom had the idea already in 1971.
On Crew rescue system, actually i very vaguely on it. NASA consider the Space Shuttle as "fool prove and incapable of errors" in OTL and ITTL
i make sure that the Shuttle got so bug free as possible, so no SRB malfunction or Ice impact on wings made out ceramics
irony Rockwell proposed Apollo CM as Life boat for Shuttle and Space Station (Boeing even Mercury capsule inside Dyna Soar test vehicle)
On SpaceX it seems that Musk goes for "Night boat to Cairo" approach
The lawyers of SpaceX have Sued Blue Orgin for Violation on Patent-right on Reuse of first stage booster involving landing on ship or platform on sea
this is the simple and easy way to recover a first stage, ballistic landing after return on end of trajectory.
While Flyback is more elegant method to return to launch site, but F-1 need ten General Electric F101-GE-102 jet-engine for that.
On LOX/Methane ambitious full-propellant staged combustion engine, hell no SpaceX will NOT build a scale down version for Falcon
if they do that, with reduce combustion chamber volume, combustion pressure has to rise to keep the ISP of 380,
in Simple Words there cheap easy F-1 engine version mutate into expensive complex RS-25
with end of RD-180 production for USA, Unite Launch Alliance looking for new Engine guess what, it seems that F-1 Engine is back from the Death!
ah year NASA looks also for F-1 as engine for SLS Lox/Kerosine booster...
I answer First ASTO Shuttle and SpaceX later
I know politic is not my big talent in AH.
But this Shuttle is best Compromise NASA can get in this TL, compare to OTL.
i notice i forgot the Payload data in Post (will be fix) but this shuttle carry lower payload as STS because it not using the High Pressure Engine with ISP of 452, But J-2Simplified with ISP 436 sec.
They consider in OTL briefly to Use four J-2S in Shuttle but with ten reuse, they dropped that for RS-25 with promise of hundred reuse, irony the RS-25 manage 10 reuse until it's junk...
use of J-2S the payload goes down considerably around -15%:
54895 pounds into 100 nm orbit at 28° Space Tug operation
27999 pounds into 100 nm orbit at 90° USAF mission
29983 pounds into 100 nm orbit at 55° for Spacelab and Space station III resupply
For Unmanned cargo version with S-IVB
85000 pounds into 100 nm orbit at 28° Space Tug operation or Hubble space telescope
43354 pounds into 100 nm orbit at 90° USAF mission
46425 pounds into 100 nm orbit at 55° for Spacelab and Space station III payload
original NASA wanted Shuttle Payload of 20000 pounds or 9072 kg in payload bay of 39 ft by 10 ftø or 12 meter by 3 meter ø
As the USAF join in that became 40000 pounds or 18144 kg for low Polar orbit, with payload bay of 60 by 15 feetø or 18 meter by 4.6 metersø
in simple words USAF wanted big spy sats in orbit and back.
on Cargo version i remember the Saturn INT-20 (first and third stage as launch rocket) and used this as base for Cargo version
but i not the first, at Boeing and Bellcom had the idea already in 1971.
On Crew rescue system, actually i very vaguely on it. NASA consider the Space Shuttle as "fool prove and incapable of errors" in OTL and ITTL
i make sure that the Shuttle got so bug free as possible, so no SRB malfunction or Ice impact on wings made out ceramics
irony Rockwell proposed Apollo CM as Life boat for Shuttle and Space Station (Boeing even Mercury capsule inside Dyna Soar test vehicle)
On SpaceX it seems that Musk goes for "Night boat to Cairo" approach
The lawyers of SpaceX have Sued Blue Orgin for Violation on Patent-right on Reuse of first stage booster involving landing on ship or platform on sea
this is the simple and easy way to recover a first stage, ballistic landing after return on end of trajectory.
While Flyback is more elegant method to return to launch site, but F-1 need ten General Electric F101-GE-102 jet-engine for that.
On LOX/Methane ambitious full-propellant staged combustion engine, hell no SpaceX will NOT build a scale down version for Falcon
if they do that, with reduce combustion chamber volume, combustion pressure has to rise to keep the ISP of 380,
in Simple Words there cheap easy F-1 engine version mutate into expensive complex RS-25
with end of RD-180 production for USA, Unite Launch Alliance looking for new Engine guess what, it seems that F-1 Engine is back from the Death!
ah year NASA looks also for F-1 as engine for SLS Lox/Kerosine booster...