The Mars parachute flight environment is supersonic, low-density, and low dynamic pressures. To ensure the operating performance reliability, design optimization verification of Tianwen-1 have been carried out. Firstly, through supersonic subsonic wind tunnel tests, structure realized. Subsequently, high-altitude tests four parachutes were conducted, drag coefficient oscillation angle from to s...

We have performed a series of three-dimensional simulations of the interaction of a supersonic wind with a non-spherical radiative cloud. These simulations are motivated by our recent three-dimensional model of a starburst-driven galactic wind interacting with an inhomogeneous disk, which show that an optically emitting filament can be formed by the break-up and acceleration of a cloud into a s...

In this paper the supersonic ejectors are experimentally and analytically studied. Ejector is a device that uses the energy of a fluid to move another fluid. This device works like a vacuum pump without usage of piston, rotor or any other moving component. An ejector contains an active nozzle, a passive nozzle, a mixing chamber and a diffuser. Since the fluid viscosity is large, and the flow is...

The design of a supersonic-supersonic mixing layer facility was motivated by the need for benchmark experimental platform to study physical phenomena underlying supersonic layers. is an intermittent blowdown wind tunnel characterized two-stream separated splitter plate in middle nozzle. ends exactly at start test section. Mach number primary stream M1 = 3 all nozzles and secondary streams are M...

We have modelled ultracompact H ii regions (UCHiiR) in terms of steady subsonic ionized flows in a clumpy medium. Mass loss from neutral clumps allows the regions to be long-lived. We examine the form of global flows for different dependences of the volume mass injection rate, ˙ q, on radius and Mach number, and describe the solutions in detail. We find that three observed UCHiiR morphologies a...

Laminar flow control (LFC) is one of the key enabling technologies for quiet and efficient supersonic aircraft. Recent work at Arizona State University has led to the development of a novel concept for passive LFC on crossflow dominated flow configurations. It employs distributed leading-edge roughness to limit the growth of naturally dominant instabilities that would otherwise lead to an earli...