Skip to content
79,433 pages · 13,741 images · since 1994 Browse A–Z Today in space history
Encyclopedia Astronautica The full story of spaceflight
Encyclopedia entry

Nitric acid/Hydyne

Propellant

Original archive entry. The text, images and links below are kept as they were written.

Nitric acid/Hydyne propellant. Hydyne was a propellant blend pushed rather vigorously by the Redstone arsenal in the late 1950's, but it found little application. No rocket engines with this propellant combination entered production.

Optimum Oxidizer to Fuel Ratio: 3.11. Temperature of Combustion: 3,195 deg K. Density: 1.31 g/cc. Oxidizer Density: 1.510 g/cc. Oxidizer Freezing Point: -42 deg C. Oxidizer Boiling Point: 86 deg C. Fuel Density: 0.860 g/cc. Fuel Freezing Point: -84 deg C. Fuel Boiling Point: 64 deg C.