A spacecraft and its launch vehicle are projected upward by the unbalanced pressure inside the rocket engine. There is high pressure on the closed front end of the rocket’s thrust chamber but much lower pressure on the open back end, where the exhaust gases flow out the chamber’s nozzle....
With less thrust and more mass, I don’t feel a need to calculate for the J-2. 141.5 tons of propellant is 37% of our propellant mass. For the return trip, we’ll need less propellant, say, 25%? The Tug would only mass 126 at that propellant fraction, and accelerate at a ...
The company said the upcoming test flight aims to build on what SpaceX engineers learned from the previous launches “while attempting a number of ambitious objectives, including the successful ascent burn of both stages, opening and closing Starship’s payload door, a propellant transfer demonstratio...
If the radius is over 500 light-years the equations will calculate give an incorrect result (too many stars). Given the empire radius in light-years, the number of stars and habitable stars inside the borders is: Nstars = Rly3 * StarDfactor NhStars = Rly3 * HStarDfactor where: Nstars...
Rocket science got a bit more science-fiction-like as RocketStar announces it has successfully demonstrated a new ion drive that incorporates nuclear fusion. It's not the sort of fusion that powers the Sun, but it does improve thrust by 50%. ...
But America’s triumph in the space race was made possible by another group the country didn’t see, reports CBS News correspondent Jan Crawford. They were called “human computers,” women -- many of them African-American -- hired by NASA to hand calculate propulsion, lift, thrust and tra...
Engineers. Competent Engineers compare performancs, test failure liabilities and strengths on models and full size AscentCraft Key <“Triple safe” “backup” and alternate load transfer for ascent and descent,,,>Crew The first crews are Spidermen.CO three spidermen remotes ride each ascent craft...
Quantum computing has been around since the 1990s, and engineers, physicists, and scientists alike have been battling one big but tiny problem with implementing the technology: the number of errors it generates. Firstly, quantum computing is completely different than classical computers, which conduct...
almost time. We check our hearing protection. There’s a wave of chest-thumping noise that shakes the steel railings and decks of our perch. Propelled by blue-white fire, clouds billow from the rocket engine and move north. At 150 tons of thrust, the J-2X engine mounted in the stand,...
Engineers are seeking to certify a variant of the RS-25, which uses technology from the space shuttle program, for more ambitious moon missions in the coming years. The current 12-test series is meant to get ready for the planned Artemis 5 mission that may fly as soon as 2029, per NASA...