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Bookmark or Share- rockets - Launch Accelerations: Values, history - Space Exploration ...Other things being equal, a higher-g launch can be more fuel efficient, because less energy is lost to gravity by getting to orbit more quickly, and gravity losses normally dominate over drag losses. Keeping STS down to 3g was a challenging design goal - it's hard to build deep throttling capability into an engine, but the shuttle was designed ...
- launch - Why do space rockets not start from an angle? Why go straight ...Besides the good answers you already got, note that for a rocket to launch diagonally you need the vertical acceleration to be more than 1g. In a Saturn V, initial acceleration was barely beyond 1g. If you put your rocket at a 45 degree angle, now you need 1.41g just to not fall to the ground. There are also huge engineering issues.
- launch - What G-forces do different launchers cause? - Space ...Some scientific payloads are extremely sensitive, I wonder if they prefer a certain rocket over others, and if the payload is designed with a certain launch system in mind from the beginning. From watching videos, I get the impression that an Ariane 5 races much faster from the launch pad than does a Falcon 9.
- What is the vapour/smoke that comes from a rocket before launch?This occurs when cryogenic boosters are used (Liquid Oxygen / Liquid Hydrogen) - as these warm up on the launch pad, some of the liquids boil and to release pressure, bleeder valves allow this gas to escape.
- rockets - what would be an alternative for Spin Launch? - Space ...Spin Launch (and some other strategies) launch at suborbital speed to avoid burning up, then accelerate in the upper atmosphere with rockets or ram jets. The approach of using a gun to launch a rocket projectile has been pursued by the military. Some artillery shells are gun-launched but rocket assisted, known as rocket-assisted projectiles (RAP).
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