Тип публикации: статья из журнала
Год издания: 2001
Идентификатор DOI: 10.2514/2.5739
Аннотация: The application of a magnetohydrodynamic (MHD) generator as a power source on a hypersonic airplane is analyzed. A new type of an MHD generator is considered, using nonuniform gas-plasma Rows, where production of plasma pistons (T-layers) is realized by special provoking of an overheating instability. This process is initiated in cПоказать полностьюold air, transforming the kinetic energy of the incoming airflow directly into electric energy without further heat addition or seed injection. Calculations show that, in Right at M approximate to 7 and at an altitude of 30 km, the rate of power transformation will be approximately 30%, the optimal value of magnetic field being B approximate to 0.3 T,An experiment to investigate the stability of a plasma piston interacting with the air stream and magnetic field has been carried out. A shock tube facility was used to create conditions corresponding to those of an MHD generator on a hypersonic airplane. A plasma layer was established within the MHD channel (similar to1.5 m length), and its parameters agreed with calculations based on a piston model. A nonstationary quasi-one-dimensional computing program was used to simulate the experimental conditions. Because of energy expenses on gasdynamic dilatation and ionization of air and radiation, heat input into a discharge is nearly twice as large as the internal energy of the working medium.
Журнал: JOURNAL OF PROPULSION AND POWER
Выпуск журнала: Vol. 17, Is. 1
Номера страниц: 19-26
ISSN журнала: 07484658
Место издания: RESTON
Издатель: AMER INST AERONAUT ASTRONAUT