NASA/TP-2003-212285, Litchford, R.J. and Cole, J.W. and Lineberry, J.T. and Chapman, J.N. and Schmidt, H.J. and Lineberry, C.W., Magnetohydrodynamic Augmented Propulsion Experiment: I. Performance Analysis and Design, George C. Marshall Space Flight Center , Marshall Space Flight Center, AL 35812, National Aeronautics and Space Administration, Washington, DC 20546-0001, February 2003, pp. 44, Format(s): PDF 8763k |
The performance of conventional thermal propulsion systems is fundamentally constrained by the specific energy limitations associated with chemical fuels and the thermal limits of available materials. Electromagnetic thrust augmentation represents one intriguing possibility for improving the fuel consumption of thermal propulsion systems, thereby increasing overall specific energy characteristics; however, realization of such a system requires an extremely high-energy-density electrical power source as well as
an efficient plasma acceleration device. This Technical Publication describes the development of an experimental research facility
for investigating the use of cross-field magnetohydrodynamic (MHD) accelerators as a possible thrust augmentation device for thermal propulsion systems. In this experiment, a 1.5-MWe Aerotherm arc heater is used to drive a 2-MWe MHD accelerator.
The heat-sink MHD accelerator is configured as an externally diagonalized, segmented channel, which is inserted into a large-bore, 2-T electromagnet. The performance analysis and engineering design of the flow path are described as well as the parameter measurements and flow diagnostics planned for the initial series of test runs.
| Keywords: | magnetohydrodynamics, electromagnetics, thrust augmentation |
|---|---|
| Subjects: | Astronautics: Spacecraft Propulsion And Power |
| ID Code: | 619 |
| Deposited On: | 04 April 2003 |