The Kennedy Space Center Visitor Complex debuts an exhibit that features a replica of Blue Origin's New Shepard capsule:
...And They had to increase the diameter of the rocket to match the capsule so it didn't look so darned phalic!
but the rocket is clearly New Shephard except: They have three kerosene-LOX engines because There was a NASA study showing the clear superiority of hydrocarbon fuels over liquid hydrogen for first stages? Nah, because Ker-LOX has more photogenic flames and smoke
IIUC it's common wisdom that hydrogen isn't the best choice for first stages. Suborbital rockets are pretty similar to first stages so I'd guess this wisdom applies to them too.
I wonder if New Shepard is using hydrogen for some silly marketing reason such as helping them convince ignorant people that they're carbon neutral or making them seem more advanced and trendy.
IIUC it's common wisdom that hydrogen isn't the best choice for first stages..
Quote from: deltaV on 12/11/2023 09:58 pmIIUC it's common wisdom that hydrogen isn't the best choice for first stages..Delta IV, Ariane 5/6, Long March 5 ....
"He also said the company will increase the flight rate of New Shepard. That vehicle performed a payload-only flight in December, the first since a launch mishap more than 15 months earlier. A crewed flight, the first since August 2022, will take place “very soon,” he said, but was not more specific."