Investigations of Peripheral Propulsive Deceleration Jets on a Mars Science Laboratory Aeroshell

Autor:	Joshua R. Codoni, Iain D. Boyd, Erin M. Reed, James C. McDaniel, Hicham Alkandry
Rok vydání:	2014
Předmět:	Flow visualization Physics Jet (fluid) business.industry Aerospace Engineering Thrust Mars Exploration Program symbols.namesake Mach number Space and Planetary Science Aeroshell symbols Supersonic speed Bow shock (aerodynamics) Aerospace engineering business
Zdroj:	Journal of Spacecraft and Rockets. 51:501-508
ISSN:	1533-6794 0022-4650
DOI:	10.2514/1.a32456
Popis:	The objective to send more massive landed missions to the surface of Mars necessitates further research and development for ways to adequately decelerate the lander, such as propulsive deceleration. Experimental measurements using planar laser-induced iodine fluorescence provide qualitative visualizations and quantitative propulsive decelerator jet mole fraction measurements over a 0.22% scaled Mars Science Laboratory aeroshell. Peripheral (off-centerline) sonic and supersonic propulsive decelerator jet models, with jet exit velocities of Mach 1.0 and 2.66, were studied in Mach 12 flow and compared with numerical results obtained using computational fluid dynamics. Experimental visualizations were obtained for various thrust coefficients ranging from 0.5 to 3.0 in increments of 0.5. Experimental results indicate that, for both sonic and supersonic jets, the bow shock is preserved between the peripheral jets and, as thrust coefficient increases, the bow shock is pushed farther from the aeroshell forebody, ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1707fd8269569ce862256ce12ed76608 https://doi.org/10.2514/1.a32456 Zobrazit plný text záznamu