7 novembre 2023 | International, C4ISR
5G seen as ‘critical’ enabler for Pentagon’s simulation, VR needs
The Pentagon is pouring money into video game-like simulation and virtual reality for training, planning, logistics and maintenance purposes.
16 mars 2020 | International, Aérospatial
Japan unveils its hypersonic weapons plans
By: Mike Yeo
MELBOURNE, Australia — Japan has outlined its research and development road map for its homegrown, standoff hypersonic weapons, confirming that it is seeking an incremental growth in capability and providing more details about the kinds of threats it is targeting with this new class of weapon.
In a Japanese-language document published on the Acquisition, Technology and Logistics Agency website, the government said two classes of standoff hypersonic systems will be deployed — the Hypersonic Cruise Missile (HCM) and the Hyper Velocity Gliding Projectile (HVGP).
The former will be powered by a scramjet engine and appears similar to a typical missile, albeit one that cruises at a much higher speed while capable of traveling at long ranges.
The HVGP, on the other hand, will feature a solid-fuel rocket engine that will boost its warhead payload to a high altitude before separation, where it will then glide to its target using its altitude to maintain high velocity until impact.
The agency also provided more details regarding warhead payloads, with different warheads planned for both seaborne and land targets. The former will be an armor-piercing warhead designed specifically for penetrating “the deck of the [aircraft] carrier,” while a land-attack version will utilize a high-density, explosively formed projectile, or EFP, for area suppression.
Area suppression effects for the latter will be achieved via the use of multiple EFPs, which are more commonly known as a shaped charge. An EFP is made up of a concave metal hemispherical or cone-shaped liner backed by a high explosive, all in a steel or aluminum casing. When the high explosive is detonated, the metal liner is compressed and squeezed forward, forming a jet whose tip may travel as fast as 6 miles per second.
Japan's road map also revealed the country is taking an incremental approach with regard to designing the shapes of warheads and developing solid-fuel engine technology, with plans to field early versions of both in the 2024 to 2028 time frame. They are expected to enter service in the early 2030s.
The agency expects both systems to navigate via satellite navigation with an inertial navigation system as backup. Japan is seeking to establish a network of seven satellites to enable continuous positioning for its self-defense forces, which will enable it to provide continuous navigation data without relying on foreign satellites.
Warhead guidance is achieved via either radio-frequency imaging converted from doppler shift data — which the government agency said will be able to identify stealthy naval targets in all weather conditions — or an infrared seeker capable to discriminating specific targets.
Japan has been conducting R&D into various areas related to hypersonic weapons for a number of years, although most of it was to benefit other fields like satellite navigation and solid-fuel rockets.
More work remains, however, in areas like hypersonic guidance systems, warhead and missile-body thermal shielding, and hypersonic propulsion systems in order for Japan to be able to field a viable standoff hypersonic weapons capability.
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14 mai 2021 | International, Aérospatial, Naval, Terrestre, C4ISR, Sécurité
Full FY22 budget coming May 27
It is expected the Pentagon will seek to retire older systems to free up funding in its budget request.
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6 septembre 2019 | International, Aérospatial
Killing programs is ‘like working out,’ says acting US Army secretary
By: David B. Larter WASHINGTON — The U.S. Army's program-killing project known as “night court” will continue and become more aggressive in the coming years as demands for the service's modernization effort increase, the Army's acting secretary said Wednesday. Named after the 1980s-era sitcom and a nod to the long hours worked by staff to pull it off, night court in 2018 identified $25 billion in savings and scrapped modernization efforts that the Army plans to use to finance new technologies. Acting Army Secretary Ryan McCarthy announced another $10 billion of savings in May. But keeping night court alive will require a deliberate effort until it becomes routine, McCarthy told the audience at the third annual Defense News Conference. “Night court is kind of like working out: You've got to get up, you've got to get after it,” McCarthy said. “It's hard. It wears you out. You think: ‘Boy, it would be easier to just stay in bed.' But it's necessary to keep the institution strong. We believe it has been institutionalized. ... But we've got to keep up the repetitions, and over time it will become a behavior, like a reflex.” McCarthy, who is expected to face a confirmation hearing to become Army secretary later this month, said as Army Futures Command's cross-functional teams identify requirements for the next generation of Army systems, the effort must become more aggressive. “What we've done in the cross-functional teams, those efforts have been successful,” McCarthy said. "So as we continue to go down the development pipe, they are going to come back with a requirement we are going to need X numbers of systems to lay in across our formations. And as we scale that out over time, that will cost more money. “So, when you look at where are the opportunities, you have to make choices — divestiture. Legacy systems that we have enjoyed for decades that have performed for us in combat operations for going on 18 years now, some of them will have to go away.” Defense Secretary Mark Esper, who formerly served as the Army secretary and championed the service's effort, signaled he will continue night court Pentagon-wide, something that will test his political clout as services are often loathed to give up reliable legacy systems, and lawmakers is even less willing to give up jobs in their districts that would be threatened by program cuts. But, McCarthy said, the effort is necessary to finance the new technologies the Pentagon needs to gain an advantage over China and Russia. “Night court will continue. In fact, night court is going prime time with Secretary Esper down the hall,” he said. “It's necessary to find as much trade space within that [$741 billion] in the '20 and '21 budgets to find every penny we can to finance our ambitions. Every investment program has a divestiture.” https://www.defensenews.com/smr/defense-news-conference/2019/09/05/killing-programs-is-like-working-out-acting-army-secretary-says