Technology

NASA and ULA Successfully Test a Giant Inflatable Heat Shield That Could Land Heavier Payloads on Mars

A new type of heat shield was successfully tested last week, with the hopes this type of inflatable decelerator could be used in the future to land humans and large payloads on Mars or for atmospheric entry on other planets on moons.

The Low-Earth Orbit Flight Test of an Inflatable Decelerator (LOFTID) was launched aboard a United Launch Alliance (ULA) Atlas V rocket on November 10 from the Vandenberg Space Force Base in California. LOFTID was a secondary payload on the launch of the Joint Polar Joint Polar Satellite System-2 (JPSS-2) weather satellite.

The ablative heat shields that have used previously have a limit on how big of a payload they can safely deliver to planets and moons with atmospheres. Inflatable decelerators have been considered the best hope on the horizon for making the human enterprise on Mars possible.

The cone-shaped LOFTID is 6 meters (19.7 ft) in diameter, making it the largest blunt body aeroshell to ever reenter from space.

“Currently, using rigid technologies, we’re limiting the size of the aeroshell itself to fit within the fairing of a launch vehicle,” or no more than about five meters across,” said Joe Del Corso, LOFTID project manager, speaking at a pre-launch briefing in October. “That limits the size of payloads delivered to the surface of Mars to about 1.5 metric tons.

LOFTID pack and deployment testing started with a load test to verify that the heat shield will perform as expected in flight under real-life conditions. Credits: NASA

However, a larger aeroshell that uses inflatable technology could enable much heavier payloads, up to the range of 20 to 40 metric tons, Del Corso said. “It’s what you need to put humans on Mars,” he said, adding that larger aeroshells would also enable access to higher terrains on Mars where the atmosphere is not dense enough to slow down vehicles with existing systems.

The LOFTID was inflated before separating from the Atlas V’s Centaur upper stage and then reentered the atmosphere over the Pacific Ocean. NASA said the aeroshell and a data recorder were recovered so that engineers can review the data on how well it worked. A backup data recorder module was also ejected before it splashed down under a parachute, in case LOFTID and the primary data recorder were lost at sea.

Back in 2012, a prototype for a large inflatable heat shield called Inflatable Reentry Vehicle Experiment (IRVE-3) was tested successfully, after launching on a sounding rocket and surviving a hypersonic speeds through Earth’s atmosphere.  Since then, more work on the development of Hypersonic Inflatable Aerodynamic Decelerator (HIAD) technology allowed this current test to be conducted. The data from this test will inform future configurations and tests.

LOFTID is made of a stack of pressurized concentric rings known as tori composed of braided synthetic fibers that are 10 times stronger than steel by weight. The reentry system is equipped with a flexible thermal protection system that insulate the rings from heat in excess of 1,600 C (2,900 F). The foldable, scalable heat shield takes up less room in a launch vehicle.

NASA said the LOFTID technology creates more drag than traditional heat shields and starts to decelerate in the upper levels of the atmosphere.

“Proving new technologies through flight test is one of the main ways we expand capabilities for future missions,” said Jim Reuter, associate administrator for NASA’s Space Technology Mission Directorate. “We were pleased to work with our ULA, NASA science, and NOAA colleagues to perform this technology demonstration in conjunction with JPSS-2’s launch.”

Nancy Atkinson

Nancy has been with Universe Today since 2004, and has published over 6,000 articles on space exploration, astronomy, science and technology. She is the author of two books: "Eight Years to the Moon: the History of the Apollo Missions," (2019) which shares the stories of 60 engineers and scientists who worked behind the scenes to make landing on the Moon possible; and "Incredible Stories from Space: A Behind-the-Scenes Look at the Missions Changing Our View of the Cosmos" (2016) tells the stories of those who work on NASA's robotic missions to explore the Solar System and beyond. Follow Nancy on Twitter at https://twitter.com/Nancy_A and and Instagram at and https://www.instagram.com/nancyatkinson_ut/

Recent Posts

Are Fast Radio Bursts Caused by Interstellar Objects Crashing Into Neutron Stars?

Astronomers have only been aware of fast radio bursts for about two decades. These are…

45 minutes ago

Here’s How to Weigh Gigantic Filaments of Dark Matter

How do you weigh one of the largest objects in the entire universe? Very carefully,…

3 hours ago

How Could Astronauts Call for Help from the Moon?

Exploring the Moon poses significant risks, with its extreme environment and hazardous terrain presenting numerous…

15 hours ago

There Was a 15 Minute Warning Before Tonga Volcano Exploded

Volcanoes are not restricted to the land, there are many undersea versions. One such undersea…

16 hours ago

Main Sequence and White Dwarf Binaries are Hiding in Plain Sight

Some binary stars are unusual. They contain a main sequence star like our Sun, while…

17 hours ago

What a Misplaced Meteorite Told Us About Mars

11 million years ago, Mars was a frigid, dry, dead world, just like it is…

20 hours ago