An inert gas sparge in a rotating propellant mixer removes evolved gases without extended shaking, avoiding compaction and preserving cure quality.
Reduced-pressure heating in a sealed reactor destroys explosophoric materials with lower explosion risk and less environmental pollution.
Direct mixing with a partially cured thermoset binder forms energetic molding powder with less waste, safer processing, and higher energy density.
A nanoporous carbon matrix absorbs inorganic oxidizer into 3D pores, enabling high energy release with lower cost, toxicity, and controlled reactivity.
Dual gassing reservoirs, homogenization, and flow control vary blasthole explosive energy while keeping density uniform and detonation consistent.
Separate material feeds create multilayer filaments for additive printing, enabling composition gradients that tailor burn rate and detonation velocity.
Catalyst-infused porous polymer fuel enables arc ignition and multiple restarts without preheating, addressing hybrid-rocket ignition reliability.
Radial fuel-grain composition helps hybrid rockets adjust thrust across flight phases.
Maceration below 50°C uses ionic conductivity to signal extraction completion, recovering at least 95% of ammonium perchlorate.
A semi-continuous process mixes polyol prepolymer and isocyanate monomer to form a composite explosive charge with a solid polyurethane matrix.
Solid channel formers stabilize burning rates across temperatures, resolving the contradiction between high energy output and consistent internal ballistics.
A process dissolves dinitramide salts in water or ammonia, then cools the solution below freezing to crystallize particles before subliming the solid solvent.
Conformable halocarbon pyrolant achieves 10,000°F to thermally decompose insensitive munitions instead of melting them.
Potassium salt stabilizes ammonium nitrate crystal phases, preventing thermal expansion that causes weakening and moisture ingress.
Ethyl cellulose films incorporate specific stabilizers to maintain combustion inhibition performance in double-base propellant blocks.
Viscous solvent crystallization yields spherical ADN crystals, resolving rod-shaped morphology issues for energetic material formulations.
Segmented propellant layers with distinct burning rates stabilize combustion pressure while maximizing propellant load without recesses.
Atmospheric pressure drying replaces supercritical steps to produce high-energy porous xerogels with controlled nanostructure.
Oblique and vertical ultrasonic exciters homogenize axial and radial residual stresses, preventing cracks caused by uneven solid particle distribution.
Monocarboxylic acid processing agents replace stearate salts to boost propellant bulk density and oxidation stability while cutting drying agent needs.
Labile blocking groups delay crosslinking to prevent premature solidification, ensuring uniform mold filling and reduced sensitivity.
Mechanical ball milling replaces thermal melting to form spherical particles, avoiding energy-intensive heating for refractory compounds.
Spray drying aqueous mixtures of guanidine nitrate and oxidizers forms gas generant grains, replacing expensive tetrazoles to lower manufacturing costs.
Salt-coated heat paper absorbs thermal energy to lower combustion temperature, preventing battery stack degradation and thermal runaway.
Energy beam ignition replaces mechanical triggers in explosive forming devices to enable precise detonation control.
Applying high-frequency acoustic energy to colloidal propellant slurry counteracts internal residual stress formation, preventing cracks in aerospace equipment.
Replacing arc discharge systems, pulsed microwave plasmas ionize alkali metal dopants to boost burning rates by 21% and flame temperature by 800 K.
Metal trifluoromethanesulfonate catalysts cure hydroxyl terminated oligomers, replacing toxic isocyanates to ensure safety in energetic material binders.
Non-crosslinked polymeric gum binders reduce vulnerability to physical impacts while maintaining mechanical strength and processability in propellant powders.
A hybrid rocket fuel grain fabricated from thermoplastic-nanocomposite aluminum via additive manufacturing.
Click chemistry crosslinks a polyazide binder to maintain mechanical strength while reducing vulnerability in propellant powders.
A Lewis acid bonding agent forms adducts with nitrogen-containing oxidizer particles to enhance wetting and binder integration.