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Lockheed Martin provides heat shield technology to protect Mars 2020 mission

Stephen Kuper

Aeroshell technology developed by Lockheed Martin will not only protect NASA’s newest Mars rover, Perseverance, but also deploy the first-ever Mars helicopter as part of the Mars 2020 exploration mission.

Lockheed Martin provides heat shield technology to protect Mars 2020 mission
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The Mars 2020 spacecraft with its Perseverance rover is scheduled to launch July 30 from Space Launch Complex-41 at Cape Canaveral Air Force Station on a United Launch Alliance Atlas V rocket.

The Perseverance rover, built by NASA's Jet Propulsion Laboratory (JPL), will study the geology of Mars while searching for signs of past microbial life, collects samples of rock, and will even set the stage for human exploration to the planet.

The 2,257-kilogram rover is enclosed in an aeroshell capsule that protects the rover during its seven-month deep space flight and atmospheric descent toward the Martian surface. Lockheed Martin-built this large aeroshell and every previous NASA aeroshell sent to the Red Planet.

Lisa Callahan, vice president and general manager of commercial civil space at Lockheed Martin Space, said, "Our partnership with NASA to build the aeroshell and engineer the Mars helicopter delivery system allowed us to draw upon our deep expertise in aeroshells while also inventing new systems to enable the first flight in the atmosphere of Mars. This all moves us closer to the day humankind will walk on the Red Planet."

The mission also debuts the first helicopter designed for another planet, named Ingenuity, to test autonomous flight on Mars. Lockheed Martin was tasked by JPL to build the Mars helicopter delivery system (MHDS) that will deploy the helicopter to the Martian surface for its flight.

The delivery system was designed by Lockheed Martin collaboratively with JPL and attaches the Ingenuity helicopter to the belly of the rover. The lightweight system was designed to reliably deploy the 1.8-kilogram helicopter to the surface using four pyrotechnic separation events. It also protects Ingenuity from debris during landing with a durable, yet light, composite debris shield.

The Mars 2020 aeroshell, along with the one built for the Mars Science Laboratory mission, is the largest built for a robotic mission. Composed of a heat shield and cone-shaped back shell measuring 4.6 metres in diameter, the aeroshell is constructed in a composite aluminum honeycomb structure sandwiched by graphite-epoxy face sheets.

The heat shield is covered with tiles of a protective material called phenolic impregnated carbon ablator (PICA) that can withstand the more than 1,300 degrees seen during peak heating.

Perseverance is expected to land on Mars on 18 February 2021.

Headquartered in Bethesda, Maryland, Lockheed Martin is a global security and aerospace company that employs approximately 110,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services.

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