HNF/HTPB propellants: Influence of HNF particle size on ballistic properties

HNF/HTPB propellants: Influence of HNF particle size on ballistic properties

van der Heijden, A.E.D.M.
Leeuwenburgh, A.B.
TNO Defensie en Veiligheid

2009

The burning rate characteristics of solid composite propellants can be modified via different methods. One of these is the application of different oxidizer particle sizes in the propellant. The effect of the use of fine and coarse particles of the oxidizer hydrazinium nitroformate (HNF) in hydroxyl-terminated polybutadiene (HTPB)-based propellants is reported in this paper. The fine HNF particles were obtained by means of a grinding process. The fine and coarse HNF grades were characterized regarding their hazardous and thermal stability properties, as well as the influence of a cured and uncured HTPB binder on these characteristics. The ballistic properties of three (two monomodal and one bimodal) HNF/HTPB-based propellants show that the use of fine HNF (5–10 μm mean size) leads to a lowering of the pressure exponent of the propellant, implying that the propellant burning rate can be tuned by varying the mean size of the HNF grades present in the propellant. © 2009 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

Ballistics
Ballistic properties
Oxidizer size
Propellants
Ballistic properties
Burning rate
Coarse particles
Grinding process
Hydrazinium nitroformate
Hydroxyl-terminated polybutadiene
Mean size
Oxidizer size
Pressure exponents
Propellant burning rate
Solid composites
Thermal stability
Ballistics
Butadiene
Explosives
Particle size
Propellants
Stability
Spacecraft propulsion
1,3 butadiene derivative
hydrazine derivative
article
combustion
controlled study
grinding
particle size
priority journal
thermostability

http://resolver.tudelft.nl/uuid:af85c4d6-f851-4d47-8635-bd56c14dd888

https://doi.org/10.1016/j.combustflame.2009.03.007

90031

Combustion and Flame, 156 (7), 1359-1364

article