Hypergolic vs non hypergolic ignition in rocket engines
Hypergolic vs non hypergolic ignition in rocket engines An early hypergolic-propellant rocket engine, the Walter 109-509A of 1942–45; source: Wiki Hypergolic ignition uses propellants that ignite on contact, eliminating the need for a separate igniter, whereas non-hypergolic ignition requires an external ignition source like an electric spark or pyrotechnic to start the combustion. Hypergolic systems are simpler, more reliable for multiple restarts, and can use storable, room-temperature propellants. Non-hypergolic systems, often using cryogenic propellants like liquid oxygen, offer higher performance but require more complex ignition hardware. Common pairs of non-hypergolic propellants are LOX/RP-1, LOX/LH2 and LOX/CH4. Thruster with Igniter vs. Hypergolic Ignition How ignition works? In the case of hypergolic ignition, the fuel and oxidizer components of a propellant spontaneously ignite upon contact, eliminating the need for an external ignition source. This characteristic sim...