29 mai 2024 | International, Terrestre
10 octobre 2019 | International, C4ISR
The data challenge of space-based hypersonics defense
By: Nathan Strout
Managing data is the biggest challenge to developing a new space-based sensor layer that would help detect hypersonic weapons, the director of the Missile Defense Agency said Oct. 7.
The agency is working toward building the Hypersonic and Ballistic Tracking Space Sensor, a layer of sensors on orbit that would be capable of detecting and tracking hypersonic weapons that the nation's current missile defense architecture was not designed to handle. The new system will be built into the Space Development Agency's constellation of low earth orbit satellites.
For Vice Adm. Jon Hill, the director of the agency, designing the sensors for the system is a surmountable engineering issue and evolving commercial launch capabilities mean it will be easy to get the technology to space once its ready. The real challenge is “the passing of track data between different space vehicles and maintaining track and dealing with clutter.”
Hypersonic weapons are dimmer than traditional ballistic missiles, making them harder to detect. The sensors will have to be able to remove that clutter, detect the threat and then pass their data to the next LEO sensor, which will pick up the object as it travels around the globe at hypersonic speed. Allowing for that data flow from sensor to sensor is essential to the effective operation of the system.
Hill compared the complexity of that data transfer to his time in the Navy, where information had to go between moving vessels, but the data issue with satellites is magnitudes of order more difficult.
“When you put yourself on a moving body that's moving, not at 30 knots but at a much higher speed, you know, maintaining the stability of that track, being able to pull the clutter out of it, determining how much you want to process up on orbit versus how much you want to feed down and process on the ground, then how you distribute. Do you distribute directly from the sensor? Do you control the weapon from space? Or do you take it to the ground station and do it there? There [are] different trades, and we'll probably do it differently in a lot of different ways because that adds to the overall resilience of the system,” Hill said speaking at a Center for Strategic and International Studies event October 7.
Finding the right answers to those questions will be a priority for the MDA as it works to works to get the system on orbit quickly.
“It's going to be a great capability. We just need to get it up there as soon as we can and rapidly proliferate,” Hill said.
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30 octobre 2023 | International, Aérospatial
Hitachi wins EU okay for $1.8 bln Thales deal | Reuters
EU antitrust regulators said on Monday they cleared Hitachi's 1.7-billion-euro ($1.80 billion) bid for Thales' GTS railway signalling business on condition the Japanese company sells assets in France and Germany, as it offered to do so.
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31 août 2020 | International, Aérospatial
Orb Takes Flight
By Kimberly Underwood The Air Force's Agility Prime program conducts first demonstration of electric vertical takeoff and landing, or eVTOL, aircraft. Last Thursday afternoon, leaders deemed the first demonstration of a flying orb by AFWERX's Agility Prime effort a success. The event was the first in a series of steps toward the U.S. Air Force fielding electric vertical takeoff and landing, or eVTOLs, by 2023. Held at Camp Mabry, near Austin Texas, with the Texas National Guard as hosts, the exhibition of LIFT Aircraft's Hexa eVTOL vehicle included the service's top brass. Secretary of the Air Force Barbara Barrett, new Air Force Chief of Staff Gen. Charles Q. Brown Jr., and new Chief Master Sgt. of the Air Force JoAnne S. Bass were all on hand to see the new aircraft, flown by LIFT CEO Matthew Chasen. “It was really exciting,” said Col. Nathan Diller, USAF, AFWERX director and Agility Prime lead, “These demonstrations start to show some of the maturity of the vehicle. And the fact that LIFT was able to do all the preparations and do an on-time takeoff and have all the maintenance pieces together [was great].” Col. Diller, who is spearheading Agility Prime's Air Race to Certification, which aims to have a first series of initial eVTOL capability by December, spoke to SIGNAL Magazine on Saturday. In the coming weeks, Agility Prime will conduct more demonstrations like the LIFT Aircraft event, with a “handful of companies,” he said. “And when that testing gets to a level where we feel this learning campaign would bring military utility at cost, we can start to purchase hardware, data or potential services, such as flight test-as-a-service.” Following the demonstrations with the companies, they may proceed into a full test plan, using combined operational testing, the colonel added. For the demonstration, the service also had to achieve the appropriate regulatory approvals. To use the airspace for the basic maneuvering, they needed much lower altitudes than a conventional aircraft would use, and in an urban environment. “The FAA gave us authorization to operate, both manned and unmanned [aircraft] within a few miles of downtown Austin,” Col. Diller shared. “And the CEO of LIFT actually flew the aircraft, so he hopped into the orb. The Hexa has a very interesting architecture, and when you think of the reliability....and to hear the acoustics, that was something to see.” The Air Force leaders were really impressed, the colonel shared. “There is kind of this ‘ahh moment' where, there is actually something flying,” he said. “And then [you see] that it is actually a demonstration more of the maturity when you start to look at it, the maturity of the vehicle and the maturity of the technology. There was a build-up that allowed us to have the confidence to do that and operate at Camp Mabry. And given that is was Texas in August, with an air temperature of about 100 degrees, the colonel said it also was a test of the e-VOTL's operations in such as environment. Col. Diller added that it was quite something to see the eVTOL aircraft as well as the Guard's F-16s at Camp Mabry, and it put into perspective where the flying orb technology could play a role in urban air mobility. “The ability to fly one of those, with the advances in new aircraft controls, there are some interesting opportunities to think about pilot training in the future, and to think about who across our service might be able to fly these in the future,” Col. Diller pondered. https://www.afcea.org/content/orb-takes-flight