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Nalgene. Nalgene is a brand of plastic products developed originally for laboratory use, including items such as jars, bottles, test tubes, and Petri dishes, that were shatterproof and lighter than glass. The properties of plastic products make them suitable for work with many substances in various temperature ranges.
The thrust of a rocket engine nozzle can be defined as: [2][3][5][6] the term in brackets is known as equivalent velocity, The specific impulse is the ratio of the thrust produced to the weight flow of the propellants. It is a measure of the fuel efficiency of a rocket engine.
The original Nalgene line included such items as jars, bottles, test tubes, graduated cylinders, and Petri dishes helpful to laboratory workers, chemists, and biologists because they were shatterproof and lighter than glass. The properties of the respective plastics make them suitable for work with many materials, in various temperature ranges.
Aerospike engine. The aerospike engine is a type of rocket engine that maintains its aerodynamic efficiency across a wide range of altitudes. [1] It belongs to the class of altitude compensating nozzle engines. [2] Aerospike engines were proposed for many single-stage-to-orbit (SSTO) designs.
de Laval nozzle. Diagram of a de Laval nozzle, showing approximate flow velocity (v), together with the effect on temperature (T) and pressure (p) A de Laval nozzle (or convergent-divergent nozzle, CD nozzle or con-di nozzle) is a tube which is pinched in the middle, making a carefully balanced, asymmetric hourglass shape.
A thrust-vectoring nozzle of invariant geometry or one of variant geometry maintaining a constant geometric area ratio, during vectoring. This will also be referred to as a civil aircraft nozzle and represents the nozzle thrust vectoring control applicable to passenger, transport, cargo and other subsonic aircraft. Fluidic thrust vectoring.
Nalgene can be used as a cheaper alternative for bell jars. Vespel polyimide is very expensive, but machines well, has good electrical insulator properties and is compatible with ultra-high vacuum. PVC, despite its high outgassing rate, can be used in limited applications for rough vacuum lines.
Pintle injector. The pintle injector is a type of propellant injector for a bipropellant rocket engine. Like any other injector, its purpose is to ensure appropriate flow rate and intermixing of the propellants as they are forcibly injected under high pressure into the combustion chamber, so that an efficient and controlled combustion process ...
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