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List the numeric designations for liquefied gas propellants.

Answer :

Final answer:

The numeric designations '3 s' and '4 s' refer to rocket engines using a liquid fuel/oxidant mixture and a solid mixture respectively. These mixtures are made up of fuel and an oxidizer, Liquefied Gas Propellants which can rapidly undergo chemical reactions to release energy for propulsion.

Explanation:

The numeric designations for liquefied gas propellants refer to the specific types of rocket engines in which these propellants are used. For example, engines firing at '3 s' use a liquid fuel/oxidant mixture, which ignites to produce a green flame. Conversely, the more powerful engines that ignite at '4 s' use a solid mixture, resulting in a yellow flame.

A liquid fuel/oxidant mixture consists of substances that can rapidly undergo certain types of chemical reactions that ultimately release energy for propulsion. An example of this could be a mixture of liquid hydrogen (fuel) and liquid oxygen (oxidizer). A solid mixture might include compounds such as powdered aluminium (fuel) and ammonium perchlorate (oxidizer).

Liquefied gas propellants are assigned numeric designations based on their specific characteristics and properties. The numeric designations are used to classify and categorize the different types of liquefied gas propellants. Some examples of numeric designations for liquefied gas propellants include butane (C4), propane (C3), ethane (C2), and methane (C1). These designations help in identifying and understanding the composition of the propellant.

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