Naval Air Warfare Center Weapons Division;
Naval Air Warfare Center Weapons Division.
J Vis Exp. 2021 Feb 6(168). doi: 10.3791/62216.
Solid rocket propellants are widely used for propulsion applications by military and space agencies. Although highly effective, they can be dangerous to personnel and equipment under certain conditions, with slow heating in confined conditions being a particular danger. This paper describes a more affordable laboratory test that is easier to set up and was developed for screening rocket propellant ingredients. Rocket propellants are cast into sample holders that have been designed to have the same confinement as standard rocket motors (propellant volume to total volume in the container) and ensure that the propellant is not easily vented. Reaction violence is quantified by the time it takes to reach 90% of the maximum pressure after autoignition, which is analogous to blast overpressure gauges used to measure violence in a full-scale test. A positive correlation was observed between the speed and pressure produced from the reaction and the power produced by the rocket propellant during the reaction.
固体推进剂被广泛应用于军事和太空机构的推进应用。虽然非常有效，但在某些条件下，它们可能对人员和设备造成危险，在封闭条件下缓慢加热是一个特别的危险。本文描述了一种更经济实惠的实验室测试，该测试更容易设置，是为筛选火箭推进剂成分而开发的。火箭推进剂被浇铸到样品支架中，这些支架的设计具有与标准火箭发动机相同的限制（推进剂体积与容器内总体积之比），并确保推进剂不易逸出。反应剧烈程度通过自点火后达到最大压力 90%所需的时间来量化，这类似于用于测量全尺寸测试中剧烈程度的爆炸超压计。反应中产生的速度和压力与火箭推进剂在反应中产生的功率之间存在正相关关系。
