Mixed Gas Generator for Inflatable Decelerators

Deployable aerodynamic decelerators are an enabling technology for missions to planets and moons with atmospheres as well as for returning payloads to Earth. These decelerators require a gas source for inflation, and the objective is to develop a noncombustible gas generator which will enable a wider range of applications, including near-term commercial applications, in the Earth environment. Anasphere has experience developing pyrotechnic gas generators for hydrogen and other gases, but to date all have used a similar design. Here, Anasphere will apply its experience to an all-new generator design and chemistry. This new family will feature more mass-efficient cooling, single-grain construction for reliable zero-g performance, and initially will focus on producing noncombustible gas mixtures. An exceptionally high flow rate capability is a distinguishing feature of these generators. Phase I will begin with refining and testing the pyrotechnic grain composition. Sample grains will then be fabricated with that composition and tested. Phase I will conclude with firing a small complete gas generator to demonstrate the production and cooling of a noncombustible gas mixture. Phase II work would include scaling up the new design and subjecting it to extensive environmental tests. Target markets include HIADs used for launch vehicle asset return and payload return from Earth orbit.