WASHINGTON — NASA and AeroVironment are transferring forward with the event of a set of helicopters to be despatched to Mars on a nuclear propulsion demonstration mission on the finish of 2028.
AeroVironment introduced Aug. 27 it obtained a contract from NASA’s Jet Propulsion Laboratory for the co-design and co-manufacture of three Mars helicopters for NASA’s SkyFall mission. The corporate didn’t disclose the worth of the contract.
NASA announced SkyFall at its Ignition event in March as a payload on its Space Reactor 1 Freedom mission, which is scheduled to launch in late 2028 to check nuclear electrical propulsion. SkyFall was described then as a trio of helicopters primarily based on the Ingenuity helicopter flown to Mars on the Perseverance rover in 2021.
The company mentioned little in regards to the helicopters on the time past their heritage and plans to incorporate ground-penetrating radar devices on them to permit them to survey for subsurface ice. That radar, JPL mentioned in a launch earlier this month, will use a versatile, fabric-based antenna with metallic parts, enabling it to probe between 12 and 60 centimeters beneath the floor.
The SkyFall helicopters themselves shall be barely bigger variations of Ingenuity. “For those who don’t have a scale bar, definitely they are going to look virtually similar,” mentioned Will Pomerantz, head of area ventures at AeroVironment, in an interview. The helicopters could have bigger rotors to hold a bigger payload, such because the ground-penetrating radar.
Different adjustments embrace a bigger photo voltaic panel and a communications system that allows every helicopter to speak instantly with relay spacecraft in Mars orbit. Ingenuity as a substitute relied on Perseverance for communications.
AeroVironment didn’t point out different payloads on the SkyFall helicopters, however in a chat on the Small Satellite tv for pc Convention on Aug. 24, Timothy Canham, a principal software program engineer at JPL, mentioned the helicopters might also carry high-resolution imagers, a dosimeter and temperature sensors.
That leads to a helicopter weighing about 2.5 kilograms, mentioned Joey Beckman, program supervisor for the SkyFall helicopters at AeroVironment, in contrast with about 1.8 kilograms for Ingenuity. A slide in Canham’s presentation listed the whole mass of every helicopter as 2.7 kilograms.
Maybe the largest distinction between Ingenuity and SkyFall is how the helicopters are delivered. Ingenuity flew to Mars on the underside of the Perseverance rover and, after touchdown, the rover launched the helicopter onto the floor. That gave engineers time to check the helicopter’s programs earlier than making an attempt its first flight.
On SkyFall, the three helicopters shall be carried inside an entry automobile primarily based on the design used for the Mars Exploration Rovers. Reasonably than touchdown the helicopters instantly on the floor, the helicopters will as a substitute be launched in midair, which Pomerantz mentioned is known as the SkyFall maneuver.
He mentioned the helicopters will obtain some data from the entry capsule about their location however will even use their very own cameras to watch the bottom and decide the place they’re. As soon as they’ve that location data, he mentioned, “they’re going to get tossed overboard.”
The helicopters will descend shortly, “then do a pull-up maneuver and are available to a hover at in regards to the altitude at which we sometimes flew Ingenuity,” he mentioned, earlier than descending vertically for a touchdown.
“The SkyFall maneuver is enabled by the elevated functionality we’ve been in a position to set up for the rotor system and for the helicopter,” Beckman mentioned. “It takes benefit of all of that functionality to take care of managed flight all through all the flight profile, from the second that it leaves the host platform and the helicopter deployment system releases all of it the way in which all the way down to the floor.”
The challenge has examined the bigger rotor blades, whose suggestions spin at supersonic speeds, to verify that they’ll carry out the maneuver. “That provides us an enormous quantity of confidence within the capacity to do the SkyFall maneuver,” mentioned Pomerantz.
He credited the design of the SkyFall maneuver itself to Håvard Grip, chief pilot for the Ingenuity helicopter and now JPL’s supervisor for SkyFall. That stemmed from earlier research that checked out choices for delivering helicopters to Mars with no lander, given a scarcity of NASA Mars lander missions for the foreseeable future, notably with the cancellation of the Mars Pattern Return effort.
“Can we really need a trip all the way in which to the floor of Mars?” he mentioned. “That was actually the beginning of the dialog for what grew to become now often called the SkyFall maneuver.”
The missions of the helicopters, as soon as they make their preliminary landings on Mars, will not be but nicely outlined. The helicopters are designed to function independently of each other, though Pomerantz mentioned there may very well be circumstances the place two fly collectively, similar to for stereo imaging.
The preliminary touchdown web site can also be unsure. Canham mentioned in his presentation that the main target was on areas at low elevations in midlatitude areas, with one web site within the Arcadia Planitia area of the Martian northern hemisphere getting used as a design reference case.
Workshops in 2027 will take into account that and potential various websites. “They need to search for locations which have ice however are additionally accessible,” he mentioned.
Pomerantz mentioned that, wherever the helicopters land, they need to have the ability to discover a large area, with every helicopter able to touring a kilometer or extra per flight. “I feel it’s nice to have the flexibility to ship helicopters and never simply scout out a neighborhood, however to go and scout out a area on Mars,” he mentioned, similar to surveying potential future touchdown websites for crewed missions.
He added that, if SkyFall is profitable, it’s going to reveal the flexibility to make use of helicopters on any Mars mission, not simply landers. There may be curiosity in utilizing comparable helicopters from “just about each subdiscipline of planetary science” to hold out research of the planet.
“I feel there must be helicopters going to Mars in each launch window that now we have, and they need to be driving together with just about each different system that’s going,” he mentioned. “They do unlock these actually cool capabilities for the science group and for the human exploration group.”
