- Hot water rocket
A hot water rocket, or steam rocket uses water held in a pressure vessel at a high temperature, such that its
saturated vapor pressureis significantly greater than ambient pressure. The water is allowed to escape as steamthrough a rocket nozzleto produce thrust. [ [http://www.tecaeromex.com/ingles/vapori.html tecaeromex- steam rockets] ]
They are best known for their use in rocket-powered car and bikes.
Sometimes a hydrogen peroxide monopropellant rocket is called a 'steam rocket', but this is not quite accurate, as the propellant is not water, and the exhaust is a mixture of steam and oxygen.
Principle of operation
The water in the pressure vessel is heated up to a high temperature (approx. 250-500 °C). At launch the water turns to
steamat the nozzle (usually a de Laval nozzle) leaving at high speed. By the recoil the rocket accelerates against the direction of the steam. The water tank of hot water rockets must be able to withstand high pressure and high temperature.
Applications of hot water rockets
Aeolipileis a hot water rocket on a bearing
Evel Knievel's Skycycle X-2 used for the Snake River Canyon jump used a steam rocket designed by Robert Truax
Art Arfons's "Neptune I" dragster [http://www.tecaeromex.com/ingles/vapori.html]
* [http://www.blastwavejet.com/rocketcar.htm Thunderbolt III]
* Hot water rockets are used occasionally as auxiliary launch aids and for experimentation purposes.Fact|date=March 2007.
Proposed uses of steam rockets
Solar or nuclear heated steam rockets have been proposed for use in interplanetary travel. Although the performance is low (~190 seconds Isp), high mass fractions are easy to achieve, and water is expected to be very easy to extract and purify from ice deposits that are found around the solar system. [ [http://www.neofuel.com/ Neofuel, using abundant off-earth resources for interplanetary transport] ]
Aeolipile- a hot water rocket on a bearing
* [http://www.tecaeromex.com/ingles/vapori.html Steam Rockets of Tecnologia Aeroespacial Mexicana]
* [http://www.time.com/time/magazine/article/0,9171,866799,00.html Time article about possible applications]
* [http://www.aquarius-aerospace.de Aquarius] Hot Water Rocket Propulsion Systems site
* [http://www.canosoarus.com/10X1Skycycle/Skycycle04.htm Technical papers] ordering
Wikimedia Foundation. 2010.
Look at other dictionaries:
Water rocket — A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel mdash;the engine of the rocket mdash;is usually a used plastic soft drink bottle. The water is forced out by a pressurized gas, typically compressed… … Wikipedia
Rocket engine — RS 68 being tested at NASA s Stennis Space Center. The nearly transparent exhaust is due to this engine s exhaust being mostly superheated steam (water vapor from its propellants, hydrogen and oxygen) … Wikipedia
Rocket — This article is about vehicles powered by rocket engines. For other uses, see Rocket (disambiguation). A Soyuz U, at Baikonur Site 1/5 A rocket is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engi … Wikipedia
Rocket propellant — is mass that is stored, usually in some form of propellant tank, prior to being used as the propulsive mass that is ejected from a rocket engine in the form of a fluid jet to produce thrust.Chemical rocket propellants are most commonly used,… … Wikipedia
Hot air balloon — This article is about hot air balloons themselves. For the associated activity, see hot air ballooning. For the rock opera, see Hot Air Balloon (rock opera). For the song, see Hot Air Balloon (song). Hot air balloon in flight … Wikipedia
Hot Shot (Transformers) — Hot Shot is the name of several characters in the various Transformers universes] . Transformers: Robots in DisguiseTransformers character name =Hot Shot japanname =Artfire caption = affiliation =Autobot subgroup =Spy Changer rank =8 function… … Wikipedia
Rocket candy — is a term used to describe the practice of manufacturing rocket fuel from a formulation using sugar as a fuel and binder.This formulation is used primarily by amateur rocketry hobbyists due to the ease of obtaining the ingredients. The sugar… … Wikipedia
Rocket engine test facility — A rocket engine test facility is a location where rocket engines may be tested on the ground, under controlled conditions. A ground test program is generally required before the engine is certified for flight. Ground testing is very inexpensive… … Wikipedia
Hot-Streak — Superherobox| caption=Hot Streak in the animated series character name=Hot Streak real name= Francis Stone species=Human Mutate publisher=Milestone Media debut= Static #1 creators= Dwayne McDuffie alliance color=background:#c0c0ff alliances= 5… … Wikipedia
Rocket Festival — This article is about the traditional Rocket Festival of Laos and Thailand; for another meaning, see Rocket Festival Spain A Rocket Festival ( th. ประเพณีบุญบั้งไฟ Prapheni Bun Bang Fai , lo. ) is a merit making ceremony traditionally practiced… … Wikipedia