CFD Analysis For Assessing The Effect Of Wind On The Thermal Control Of The Mars Science Laboratory Curiosity Rover

Bhandari, Pradeep; Anderson, Kevin R.

doi:10.2514/6.2013-3325

Cited by 13 publications

(7 citation statements)

References 8 publications

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“…The MMRGT converts heat from the natural radioactive plutonium into electrical power [1]. MMRGT is a cylindrical box connected to heat dissipation fins and two heat exchanger plates [9]. Figure 1 shows a general view of the Mars 2020 rover vehicle (robotic arm was not represented for a better vision of the rover devices).…”

Section: The Mars 2020 Rovermentioning

confidence: 99%

Aerodynamics of Mars 2020 Rover Wind Sensors

Bardera¹,

Sor²,

García-Magariño³

2020

Mars Exploration - A Step Forward

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Environmental factors in Mars atmosphere are a part of the research issues of the future Mars 2020 mission. The new rover surface vehicle will transport different instruments to investigate the geology, biology, and meteorology of Mars. Amongst these instruments, the Mars Environmental Dynamics Analyzer (MEDA) will be dedicated to the measurement of environment parameters. Two wind sensors will be included in the meteorological station MEDA because wind plays a very important role in Martian climate. High-quality wind data are required to build mathematical models of the Mars climate; therefore, powerful techniques are necessary to eliminate aerodynamic perturbations produced by the rover presence over wind measurements. This chapter is dedicated to the characterization of the aerodynamics around the Mars 2020 rover and its interaction with the rover Mars surface vehicle in order to get information to correct wind data coming from Mars.

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Section: The Mars 2020 Rovermentioning

confidence: 99%

Aerodynamics of Mars 2020 Rover Wind Sensors

Bardera¹,

Sor²,

García-Magariño³

2020

Mars Exploration - A Step Forward

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“…This heat is tramsitted to the soil, the atmosphere and is radiated. The thermal insulation design must accommodate for possible large variations in the temperature of the soil, as it can warm up if in contact with heat-emitting sources such as power units [38], and for heat exchange with the atmosphere [39].…”

Section: Thermal Controlmentioning

confidence: 99%

Systems engineering and design of a Mars Polar Research Base with a human crew

et al. 2019

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Ice caps have been known ever since they were first observed by Cassini. Robotic exploration missions, starting with Mariner 9, have confirmed that they are composed of water ice. During later missions, instruments such as Mars Global Surveyor's MOLA have established a detailed topography and have estimated their depth at about 3 km in the thickest part, while detailed internal structure has been investigated by MARSIS from Mars Express and SHARAD from the Mars Reconnaissance Orbiter. This analysis proposes to establish a base near North Polar Layered Deposits to investigate Mars' climate, hydrological processes and to test for possible traces of life. The objectives of the mission are to sustain a crew for nine months on the surface of Mars, near the North Pole, and to bring the crew back to Earth safely. During the surface mission, the crew will drill and analyze Polar Layered Deposits in ice samples. Furthermore, because the North Polar region provides an easy access to water ice, this area has the potential of sustaining a long-term human presence. The Mars Polar Research mission shall therefore prepare for long term missions, spanning over multiple crew generations. Indeed, longer duration missions and larger crews should be facilitated by this first mission. This paper describes a mission design for a Mars Polar Research base using systems engineering approach and scenario testing. The goal of the work is to establish a strategy composed of various technologies that have been selected accordingly. The requirements related to crew composition, human physiology and psychology adaptation, quality of communication, challenges and prospects of advancing science, as well as optimum habitat design and its usability, are derived and compiled into mass, volume, data and power consumption. A design for the base and mission scenario is also proposed. Given the identified requirements, possible technologies for life support systems, radiation protection, in-situ propellant production, thermal control, air pressure difference compensation and availability of power are discussed and solutions to focus on are recommended. Furthermore, the requirements for a long-term mission preparation are also identified and solutions to include in a first Mars mission with crew are recommended. In conclusion, approximately 110 metric tons and 160 kW are required to enable a Mars Polar mission with a human crew. A two-phase mission is recommended for enabling the testing of key in-situ resource utilization technologies allowing to minimize mass, while ensuring the security of the crew. The use of optimal payload and fairing, a Mars orbit crane system and deployable structures are recommended. Finally, in preparation for a long-term presence of humans on Mars, including in-situ testing of key technologies enabling the production of consumables facilitating autonomy from Earth is suggested. The consumables that have been identified as not being able to be tested before a first crew is sent to Mars are food and energy production. These dev...

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“…The Mars Helicopter flies on the NASA Mars 2020 rover mission. Bhandari and Anderson 15 denoted that the Martian atmosphere is ∼95% carbon dioxide. The ambient pressure is ∼1040 Pa.…”

Section: Introductionmentioning

confidence: 99%

Vortex flow aerodynamics behind a symmetric airfoil at low angles of attack and Reynolds numbers

Kurtuluş

2021

International Journal of Micro Air Vehicles

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The low Reynolds number aerodynamics is important to investigate for micro air vehicle applications. The current paper covers numerical simulations to present the downstream development of the wake patterns and detailed analysis of the vortices generated at the downstream of NACA 0012 airfoil around the critical angle of attack where the instantaneous vortex patterns are oscillatory and differ from the mean vortex pattern for low Reynolds numbers ranging from 1000 to 4000. The instantaneous and mean aerodynamic forces, pressure and skin friction coefficients, and vorticity values are compared in addition to the path of the vortex centers, their longitudinal and lateral spacings, Kármán spacing ratios, and distortion ratios at the wake of the airfoil in regard to the different Reynolds numbers investigated. The streamwise and crosswise velocities of the vortex cores and relative velocities at different transverse locations are also discussed and presented in detail. The correlations between different non-dimensional numbers (St, Re, Ro) are obtained at these low Reynolds numbers investigated.

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CFD Analysis For Assessing The Effect Of Wind On The Thermal Control Of The Mars Science Laboratory Curiosity Rover

Cited by 13 publications

References 8 publications

Aerodynamics of Mars 2020 Rover Wind Sensors

Aerodynamics of Mars 2020 Rover Wind Sensors

Systems engineering and design of a Mars Polar Research Base with a human crew

Vortex flow aerodynamics behind a symmetric airfoil at low angles of attack and Reynolds numbers

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