Liquid Rocket Engines Require many moving parts and plumbing.

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Presentation transcript:

Liquid Rocket Engines Require many moving parts and plumbing. Require cryogenic or toxic fuels. Cryogenic fuels must be kept cold. Oxidizer and fuel must be kept in separate tanks. Cannot be stored in rocket for long periods of time. Often require pressurants and/or turbopumps to ensure that fuel and oxidizer flow into the combustion chamber. Although some ballistic missiles use liquid rocket engines, tactical missiles rarely use them. http://thisworldandothers.files.wordpress.com/2013/04/20130423-232832.jpg

Solid Rocket Engines Few (if any) moving parts. Solid Propellant storable at room temperature for years. Simple design and fabrication. Lower Isp than liquid engines. Cannot stop or throttle after ignition. A better choice than liquids for most missiles. https://www.awesomestories.com/asset/view/Space-Shuttle-Solid-Rocket-Booster-in-Segments http://upload.wikimedia.org/wikipedia/commons/thumb/7/70/SolidRocketMotor.svg/2000px-SolidRocketMotor.svg.png

Liquid Rocket Engine Cycles Pressure-fed Cycle Staged Combustion Cycle Expander Cycle Gas-Generator Cycle Images from http://en.wikipedia.org