chemical rocket engine造句

• In a conventional chemical rocket engine the rocket carries with itself in flight both its fuel and its oxidizer.
• Boosting the temperature and speed of the exiting exhaust in chemical rocket engines is possible, but that can cause another problem : destroying the engine.
• Chemical rocket engines _ like those of the space shuttle _ throw out propellant at the relatively low temperature of about 5, 000 degrees Fahrenheit, and the relatively slow speed of 10, 000 miles per hour.
• The conceptual Saturn C-5N was designed as an manned mission to Mars by 1980, it would have cut crewed transit times to Mars to about 4 months, instead of the 8 9 months of chemical rocket engines.
• The spaceflight engine is being developed by a team led by Bill Emrich, an engineer at NASA's Marshall Space Flight Center in Huntsville, Ala . Emrich predicts his fusion drive would be able to generate 300 times the thrust of any chemical rocket engine and use only a fraction of its fuel mass.