What does the term hypergolic mean?
What does the term hypergolic mean?
Definition of hypergolic 1 : igniting upon contact of components without external aid (such as a spark) 2 : of, relating to, or using hypergolic fuel.
Are Monopropellants hypergolic?
Monergols were monopropellants, while non-hypergols were bipropellants which required external ignition, and lithergols were solid/liquid hybrids. Hypergolic propellants (or at least hypergolic ignition) were far less prone to hard starts than electric or pyrotechnic ignition.
How does a monopropellant work?
Monopropellant engines generate thrust by liquid hydrazine flowing through an open propellant valve into a catalytic decomposition chamber where the propellant goes through a highly energetic decomposition process and the hot decomposition gases are then accelerated through a converging-diverging nozzle.
What is nitrogen tetroxide used for?
Nitrogen tetroxide is used as an oxidizing agent in one of the most important rocket propellants because it can be stored as a liquid at room temperature.
What is a Bipropellant?
Definition of bipropellant : a rocket propellant consisting of separate fuel and oxidizer that come together only in a combustion chamber.
What is monopropellant give example?
Hydrazine, ethylene oxide, hydrogen peroxide (especially in its German World War II form as T-Stoff), and nitromethane are common rocket monopropellants. As noted the specific impulse of monopropellants is lower than bipropellants and can be found with the Air Force Chemical Equilibrium Specific Impulse Code tool.
What are the main components of a monopropellant?
Under normal conditions, it is considered to be nonflammable and nonexplosive, making it a safe propellant. Its major constituent is propylene glycol dinitrate stabilized with dibutylsebacate (see Table XV).
What is the meaning of tetroxide?
Definition of tetroxide : a compound of an element or group with four atoms of oxygen.