A propellant is a material that is used to move an object by applying a motive force. This may or may not involve a chemical reaction. It may be a gas, liquid, plasma, or, before the chemical reaction, a solid. Common propellants are gasoline, jet fuel and rocket fuel.
In aerosol cans, the propellant is simply a pressurized gas. If the can was simply filled with compressed gas, either it would need to be at a dangerously high pressure, or the amount of gas in the can would be small, and it would soon run out. Hence usually the gas is the vapour of a liquid with boiling point slightly lower than room temperature. This means that inside the pressurized can, the vapour can exist in equilibrium with its bulk liquid at a pressure that is higher than atmospheric pressure (and thus able to expel the payload), but not dangerously high; yet, as gas escapes, it is immediately replaced by more liquid evaporating.
Propeller Solutions, Inc. is a technology-based company specializing in custom performing propellers for pleasure yachts, sport-fishing vessels, high-speed vessels, and for those concerned with smoothness, efficiency, and performance.
Propeller Solutions is called on by Naval Architects, Builders, Owners, and Captains for assistance in the design process with problem-solving or for performance and efficiency solutions.
Our propeller designs range from a flat face constant pitch for slow to medium speeds, to a cambered, skewed design with a variable pitch distribution for high load conditions and maximum performance.
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