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  10 août 2020 | International, Aérospatial

  USAF Stages ARRW Captive-Carry Test, Merges DARPA Payload

  Steve Trimble A U.S. Air Force B-52H on Aug. 8 completed the second and final instrumented measurement vehicle test flight of the Lockheed Martin AGM-183A Air-launched Rapid Response Weapon (ARRW), and the Air Force announced the payload for a previously separate risk-reduction program will be merged into the ARRW flight-test vehicles. The latest trial by the 419th Flight Test Sqdn. (FLTS) at Edwards AFB, California, confirmed that the Navy's sea-range ground stations at Point Mugu, California, can receive transmissions of telemetry and GPS data from the instrumented measurement vehicle, the Air Force said in an Aug. 8 news release. The second test appears to clear the Air Force to move forward with a series of powered test flights of the AGM-183A, beginning with a booster flight test before year-end. “The entire team is excited to take the next step and begin energetic flight test of our first air-launched hypersonic weapons,” said Lt. Col. Michael Jungquist, commander of the 419th FLTS and director of the Global Power Bomber Combined Test Force. The statement indicates that the Air Force has made a fundamental change to the original test plan for the Defense Department's only development program air-launched hypersonic glide vehicle (HGV). When the Air Force launched the ARRW program in 2017, service officials expected to leverage flight-test data from the Tactical Boost-Glide (TBG) program, which is funded jointly by DARPA and the Air Force. The TBG and ARRW were expected to use a similar, if not identical, high lift-to-drag-ratio HGV. DARPA planned to complete flight tests of the TBG in 2019, so the performance data could be used to inform any changes necessary for ARRW, which completed the critical design review in February 2020. The Air Force now acknowledges for the first time that DARPA has previously completed two captive-carry tests of the TBG demonstration system. Instead of continuing a separate series of flight tests, the TBG demonstration system “will be integrated into the ARRW payload,” the Air Force said. “We are in a competition and must remain diligent in our efforts to stay ahead of our adversaries, who are vigorously pursuing similar weapon systems,” said Gen. Arnold Bunch, head of the Air Force Materiel Command. It is not clear when the TBG captive-carry tests were staged, but the Aug. 8 event comes 416 days after the 419th FLTS completed a captive-carry test of the first instrumented measurement vehicle for the AGM-183A. For the second test on Aug. 8, the Air Force loaded both AGM-183A captive-carry vehicles onto the inboard pylon of the left wing of a B-52 nicknamed “Dragon's Inferno.”
 Unlike the white-painted, first instrumented test vehicle, the second captive-carry version of the AGM-183A emerged in an operational, two-tone gray scheme, with the nose section painted a few shades darker than the booster section. The second instrumented measurement vehicle also was adorned with a new logo, featuring a skeletal figure firing an arrow over two Latin words, “celeri responsio,” which means “rapid response.” The Air Force plans to fire the AGM-183A at the most heavily guarded targets, using the weapon's agility at hypersonic speed to evade missile defenses. The Air Force expects to field the first four AGM-183As by the end of fiscal 2022. The booster tests this year and next year will be followed by flight tests of the all-up round, including the release of the TBG-derived HGV payload, starting in October 2021. “This capability will directly support our warfighters. Hypersonic weapons further enable the U.S. to hold any target at risk in any environment anywhere,” said Gen. Tim Ray, the head of Air Force Global Strike Command. https://aviationweek.com/defense-space/missile-defense-weapons/usaf-stages-arrw-captive-carry-test-merges-darpa-payload

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  14 avril 2020 | International, Naval

  US Navy commissions its last Block III Virginia submarine

  By: David B. Larter WASHINGTON — The last of the U.S. Navy's eight Block III Virginia-class submarines has joined the fleet, according to a Navy news release. The attack submarine Delaware didn't have its formal commissioning ceremony because of the ongoing coronavirus outbreak, but it will nonetheless start getting ready to enter the deployment rotation. The Block III replaced 12 vertical launch tubes for Tomahawk Land Attack Missiles with two larger 87-inch diameter tubes able to fire larger payloads, each housing six TLAMs. The first Block IV, the attack submarine Vermont, is slated to be commissioned later this month. The Block IV subs primarily add reliability features to the boat that should increase its life span. The Block V, which was awarded last year, adds acoustics upgrades. Eight of the boats will have the Virginia Payload Module. The VPM is designed to triple the Tomahawk cruise missile capacity of the Virginia-class subs, a move designed to offset the pending retirement of the Ohio-class guided-missile subs, which have a 154-Tomahawk capacity. Each Virginia Payload Module sub will have a 40-Tomahawk loadout. https://www.defensenews.com/naval/2020/04/09/the-us-navy-commissions-the-last-block-iii-virginia-submarine/

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  14 mai 2020 | International, C4ISR

  Support growing for review of Ligado interference information

  Aaron Mehta As the Department of Defense and its allies attempt to stop Ligado from moving forward with plans the Pentagon says will harm the Global Positioning System, consensus is growing around the idea of an independent review of the testing the Department had completed for interference. The dispute stems from the Federal Communications Commission's decision to approve Ligado's request to use L-Band spectrum, first reported by C4ISRNET April 10. Now the question is whether Pentagon tests showing that Ligado's plan would interfere with GPS signals vital to military, commercial and civilian technologies are still relevant, given mitigation plans from the company. A May 6 Senate Armed Services Committee hearing on the issue underlined a fundamental disconnect between the two sides over technical testing of Ligado's capabilities, a he-said-he-said situation where both sides claim the data shows the other is comprehensively wrong. That disconnect is an issue for Sen. Jim Inhofe, R-Okla., the chairman of the SASC and a vocal supporter of the Pentagon's position. “What I took away from our hearing last week was that the results of DoD's testing just don't match up with the testing the FCC relied on to make their decision; in fact, I'm concerned they were looking at different things,” Inhofe told C4ISRNET this week. “It seems to me the FCC didn't really give DOD's analysis — which was done in conjunction with eight other federal departments — fair consideration,” Inhofe continued. “While I trust the Pentagon's conclusions, I think we'll all sleep better at night if we have more independent testing done to verify just how Ligado's plan will affect our GPS signals.” While not saying who should do the verification, Inhofe's comments match up with calls from a trio of non-defense trade groups that in the last few days have specifically called for the National Academy of Sciences — a non-profit, non-governmental research institute that can play a role as a neutral arbiter — to take a fresh look at the data gathered by both the Pentagon and Ligado and weigh in. On May 8, Securing America's Future Energy and the Intelligent Transportation Society of America tweeted that NAS should specifically lead a new round of testing, while Dana Goward, president of the non-profit Resilient Navigation and Timing Foundation, also supported the idea in a May 11 op-ed for C4ISRNET. “Congress must select a technically competent and impartial entity such as the National Academy of Sciences to fill this role. This entity must review the work that has been done and conduct any further analysis needed to inform policy makers,” Goward wrote. “The technologies involved are mature. Testing methodologies are well established. This will not be an onerous task.” Pausing the FCC's decision while launching a review of the testing data would likely require approval from the Commerce committees. House Energy and Commerce Committee ranking member Rep. Greg Walden, R-Ore., suggested further work would be redundant. “We must ensure that this decision maintains our national and economic security, which is why this technology was tested, modified, and tested again, several times before the FCC reached its decision,” Walden said in a statement to C4ISRNET. The Pentagon, thus far, has been reluctant to agree to further technical testing, with Dana Deasy, the department's Chief Information Officers, shooting down the idea in a May 6 call with reporters. However, Defense leaders are now open to an independent review of existing test data, according to Lt. Col. Robert Carver, a department spokesman. He said in a statement the Pentagon would “support an impartial third party, one with demonstrated expertise in GPS testing, conducting a thorough examination of all data collected during the preceding decade of testing. “We emphasize any such examination must be conducted by a party with unquestioned capability, capacity and experience in this arena. We believe a painstaking examination of existing test data will confirm the results of all previous tests, including the limited tests funded by Ligado, that Ligado's proposal will result in interference to GPS even at the one-decibel level,” Carver said. “Any testing, or evaluation of prior testing, must address protection of the GPS service, the frequency band assigned to it, and all receivers intending to use that service." A Ligado spokesperson declined to comment. In the meantime, the department continues to push through the formal process to request the FCC change its mind. That would be a tough path forward for any vote that passed unanimously with five votes, as it would require three members of the commission to change their mind. It may be even more difficult given the comments from Deasy, Inhofe and others indicating the FCC purposefully kept DoD out of the loop as it was making its decision. In a statement after the hearing, an FCC spokesman blasted “all of the untrue statements” made by officials, called claims of unanimous opposition in the government “blatantly false,” and saying assertions that DoD was blindsided are “preposterous.” “The bottom line here is that the FCC made a unanimous, bipartisan decision based on sound engineering principles,” the spokesman said. “We stand by that decision 100% and will not be dissuaded by baseless fearmongering." Joe Gould in Washington contributed to this report https://www.c4isrnet.com/battlefield-tech/2020/05/13/support-growing-for-review-of-ligado-interference-information/