Investigation on Green Propellant Engine Using Hydrogen Peroxide and Different Hypergolic Fuels
- Paper number
IAC-09.C4.8.17
- Author
Prof. lin qingguo, Shanghai Institute of Space Propulsion, China
- Year
2009
- Abstract
\Large In order to make spacecraft nontoxic, unpolluted, high reliable and low cost, research on hydrogen peroxide (HP) becomes more and more attractive and popular. HP can not only be used as monopropellant, but also can be used as bipropellant with special fuel. The special fuel plays a key role in the achievement of hypergolic capability for this storable bipropellant. To be competitive with NTO{\tt\char92}MMH bipropellant combination in terms of auto ignition, stability, Isp performance and so on, many kinds of special fuels with 98\% concentration HP are developed on the 200N engine. This paper introduces these different kinds of special fuels and the drop test results of ignition delay. The results reveal that some fuels have very fast auto ignition characteristics and storage stability in long term, but other fuels are found a little sediment in the bottom of the container and appear two layers after one year though they have good drop test results as well. This paper also analyses the key design technologies of this RCS engine due to the high mixture ratio of HP {\tt\char92} fuel and HP self-decomposition peculiarity, and describes the design feature of 200N engine in detail. At last this paper presents the hot firing test results of 200N engine using 98\% hydrogen peroxide{\tt\char92}different hypergolic fuels on ground level and in vacuum simulation chamber. The hot firing tests have indicated that the special fuels can ignite reliably with hydrogen peroxide and 200N engine can run successfully in steady state and pulse mode operation. The test results demonstrate that the engine has the favorable performance close to that of the 150N NTO{\tt\char92}MMH engine used on Chinese spaceships in terms of response characteristics, startup pressure peak, combustion roughness and specific impulse, etc. The engine using this novel nontoxic propellant combination may be applied to spacecraft propulsion system as an advanced green propeller in the near future.- Abstract document
- Manuscript document
(absent)