Hot Water Rockets
A hot water rocket (or steam rocket) is a water rocket which uses hot blast water as its propellant. Water is kept in the rocket under pressure, at below its boiling point at that pressure. As it exits through a rocket nozzle, the pressure drops and the water instantly boils and expands against the nozzle and this greatly increases the exhaust speed and thrust.
The idea of such rockets was conceived by Germany before the Second World War, with the suggested use of an alternative rocket engine for launching fighter jets.
Read more about this topic: Water Rocket
Famous quotes containing the words hot, water and/or rockets:
“Can fire be carried in the bosom without burning one’s clothes? Or can one walk on hot coals without scorching the feet? So is he who sleeps with his neighbor’s wife; no one who touches her will go unpunished.”
—Bible: Hebrew, Proverbs 6:27-29.
“People always ask us, “Are things better or worse today?” Well, some things are better and some things are worse.... But there are a lot of problems in the world today that no one dreamed of when we were young. For instance, this business about the environment. Why, clean water was just something you took for granted.”
—Sarah Delany (b. 1890)
“The Thirties dreamed white marble and slipstream chrome, immortal crystal and burnished bronze, but the rockets on the Gernsback pulps had fallen on London in the dead of night, screaming. After the war, everyone had a car—no wings for it—and the promised superhighway to drive it down, so that the sky itself darkened, and the fumes ate the marble and pitted the miracle crystal.”
—William Gibson (b. 1948)