Accession Number:

ADA446523

Title:

Weakly Ionized Plasmas and MHD for Enhanced Performance of Hypersonic Vehicles

Descriptive Note:

Briefing charts

Corporate Author:

PRINCETON UNIV NJ DEPT OF MECHANICAL AND AEROSPACE ENGINEERING

Report Date:

2004-06-22

Pagination or Media Count:

37.0

Abstract:

Aerospace Applications of Weakly Ionized Plasmas Power generation using MHD Use of power to control aerodynamics and propulsion 1 Surface plasmas for separation and turbulent transition control virtual shapes 2 Virtual shapes created by off-body energy addition for drag reduction, steering, shock control, flow turning 3 Plasma-assisted combustion. Power extraction from one region and its use in another region MHD bypass Dual-use MHD devices both power generation and flow control 1 Forces created by magnetic and electric fields acting on charged particles transferred to neutral gas by collisions 2 Ionization level per se is not critical if plasmas are used as a means of delivering energy to the flow 3 Ionization is critical in MHD power generation and flow control, and in cold-plasma generation of radicals 4 At high T reentry, scramjet combustor -- thermal ionization with alkali seed 5 At low T, artificial ionization is needed, and the ionization cost determines design and performance 6 Similar to ionization, cold plasma generation of chemically active species for combustion can have considerable energy cost 7 Both energy addition and extraction result in flow heating and losses of total pressure and if in propulsion flowpath thrust

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE