R. Meyer J. Köhler A. Homburg Explosives

121 Erythritol Tetranitrate
Erosion
Wearing away of a material due to high gas velocities and entrained
particles.
Erosive Burning
erosiver Abbrand; combustion érosive
Term used in solid fuel rocket technology to describe the anomalous
increase in the burning rate. This increase is thought to originate from
turbulent instead of laminar gas flow along the burning surface, which
leads to a higher feed back of heat energy onto this surface, and thus
a higher rate of burning. Mechanical erosion may also take place by
gases enriched with solid particles, e.g., Al2O3.
Resonance combustion is defined as the generation of pressure maxima
in the combustion chamber and the consequent irregularity of the
burning rate; these maxima originate from the interaction between the
gas stream and the flame and become apparent as a kind of vibration.
Star-shaped grooves in case-bonded charges tend to equalize the
pressure and suppress the tendency to resonate. Other relevant keywords
are: W Burning Rate, W Solid Propellant Rockets.
Erythritol Tetranitrate
Tetranitroerythrit; tétranitrate d’érythrite
colorless crystals
empirical formula: C4H6N4O12
molecular weight: 302.1
oxygen balance: +5.3%
nitrogen content: 18.55%
volume of explosion gases: 704 l/kg
heat of explosion
(H2O liq.): 1519 kcal/kg = 6356 kJ/kg
(H2O gas): 1421 kcal/kg = 5943 kJ/kg
specific energy: 111 mt/kg = 1091 kJ/kg
density: 1.6 g/cm 3
melting point: 61.5 °C = 143°F
deflagration point: 154–160 °C = 309–320°F violent explosion
impact sensitivity: 0.2 kp m = 2 N m