US Navy’s four unmanned ships return from Pacific deployment

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  21 janvier 2020 | International, Aérospatial

  Technical Failure or Unrealistic Expectations? Report Shows U.K. Police Drones Fall in Heavy Rains

  Whether technical failure or simply unrealistic expectations, a new report published in the U.K. indicates that the DJI Matrice Series drones fall during heavy rains. As reported by CNN, the U.K.'s Air Accidents Investigation Branch (AAIB) found that 16 DJI Matrice 200 series drones crashed due to “technical failures” while flying in the rain. This month's AAIB bulletin reports on one specific incident that took place in a flight over a sporting event: The DJI Matrice 210 small unmanned aircraft was being operated commercially to record video footage of an outdoor athletics event. The pilot started to position the aircraft back towards the landing site due to an increase in the rainfall. The pilot then saw the aircraft“wobble” slightly and as it neared the landing site it flipped over before descending rapidly to the ground from a height of about 3 m (10 ft). No one was injured. During the accident flightthe aircraft had been operating at heights of up to about 30 m (100 ft) near to, and above people on the ground. This investigation reviewed other similar accidents and the risk of injury to people on the ground. It's important to note that the professional pilot handled the situation correctly and according to protocol – and as a result, his aircraft was damaged but there were no injuries or issues with the spectators or participants in the event. The event began in light rain, but, as can happen in the U.K., a drizzle became a downpour. In a statement to CNN, DJI reiterated that safety is a priority: “The DJI Matrice 200 Series has been independently certified by a third party that it has an IP43 rating,” it said. “This certifies that ‘water falling as a spray at any angle up to 60° from the vertical shall have no harmful effect'. However, the M200 is not suitable, and should not, be operated in conditions or precipitation greater than those stated by the certification. “All users of M200 series drones should refer to our current maintenance guidelines and safety information here to help manage their aircraft and maximise flight safety.” The problem may not be as much about a “failure,” which implies the unexpected, as it is one of unrealistic expectations. Much of the advantage of an sUAS is in its small form factor. While the technical capabilities of drones have increased over the last several years, and commercial drones can now maintain stability in a wider range of environments, they aren't airplanes and they aren't designed to be flown in all weather conditions – including a downpour. https://dronelife.com/2020/01/17/technical-failure-or-unrealistic-expectations-report-shows-u-k-police-drones-fall-in-heavy-rains/

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  26 octobre 2018 | International, Terrestre

  Textron buys ground robot manufacturer Howe & Howe

  By: Aaron Mehta WASHINGTON — Textron Systems has announced its intention to purchase Maine-based Howe & Howe Technologies, a developer of robotic land vehicles, in a move Textron says will position the company to be a “global leader” in autonomous systems. The purchase, which does not have an announced price tag, is expected to close in mid-December. It comes as industry around the world eyes the potential military unmanned ground vehicles market as an area for future growth. Howe produces a number of systems in use by the U.S. government, including the small Ripsaw Super Tank and the RS2-H1 SMET, which was down-selected to compete to be the U.S. Army's platoon load-carrying robot. The company also produces a pair of firefighting unmanned systems, the Thermite and Bulldog. While having some experience in the ground-based unmanned sector, Textron Systems has largely focused on UAVs. Hence, adding Howe's ground systems expertise to its portfolio makes economic sense, said Textron Systems head Lisa Atherton in a company statement. She called Howe the “original disruptors in the advanced robotic vehicle space.” “Textron Systems is now positioned to be a global provider of unmanned capabilities across all three domains. We are clear on the U.S. military's vision and their future technology needs for autonomy, robotics and unmanned systems,” she added. “Bringing together Textron Systems' and Howe & Howe's talent, capabilities and proven products will join two of the best, and we are excited at the idea of advancing the industry even further as one team.” Michael Howe, president of Howe & Howe Technologies, added that “the deep experience and forward thinking of Textron Systems, coupled with the innovation and sheer competitiveness of Howe & Howe, will make for a formidable combination. We expect that the whole will be immeasurably greater than the sum of our parts and will be positioned to forge the 21st century world leader in ground robotics and mobility.” The Pentagon set aside $429 million for unmanned ground systems in fiscal 2019, doubling in just two years from $212 million in FY17 and $310 million in FY18. And while explosive ordnance disposal systems still represent the biggest spending from the Army in this arena, it will likely be overtaken by programs such as the Army Common Robotic Systems and Robotic Ground System Advanced Technology Development. https://www.defensenews.com/industry/2018/10/25/textron-buys-ground-robot-manufacturer-howe-howe

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  16 octobre 2018 | International, Aérospatial

  Most F-35s return to flight operations after fuel tube problem

  By: Valerie Insinna WASHINGTON — After a fuel tube problem sidelined all operational F-35 aircraft last week, more than 80 percent of jets have been cleared to return to flight, the F-35 joint program office stated Monday. In a Oct. 15 statement, the JPO confirmed that the U.S. services and international partners have completed inspections of their F-35 inventories for faulty fuel tubes. The aircraft that are not impacted by the bad tubes — which are a component in Pratt & Whitney's F135 engine — are back in flying status. “The F-35 Joint Program Office continues to work closely with the military services to prioritize fuel tube replacements using the current spares inventory,” the JPO said. “Pratt & Whitney is rapidly procuring more parts to minimize the overall repair timeline for the remaining jets. Current inventory will restore about half of the impacted jets to flight operations, and the remaining aircraft are expected to be cleared for flight over the coming weeks.” Last week, all U.S. and international F-35s were momentarily grounded to allow for an enterprise-wide fuel tube inspection. The review began as a result of an investigation into a Sept. 28 Marine Corps' F-35B crash near Marine Corps Air Station Beaufort in South Carolina — the first F-35 crash in the jet's history. It is still unclear exactly how the defective fuel tubes impact the jet's performance or how serious a safety threat they pose during flight operations. Joe DellaVedova, a spokesman for the JPO, declined to discuss the specific problems that led the program office to call for a fleetwide inspection, saying that details could not be released until the Marine Corps completes its accident investigation. Also still up in the air is whether the Pentagon or Pratt & Whitney will be stuck paying the tab for retrofitting the fleet. Spokesmen from the U.S. Air Force, Marine Corps and Navy declined to lay out exactly how many of their aircraft had been impacted by the faulty fuel tubes. However, as Lockheed Martin delivered its 300th F-35 in June, 20 percent of the operational F-35 fleet can be estimated to be about 60 aircraft across the U.S. and international operators. The JPO called the fuel tube problem an “isolated incident” that would not impact F-35 deliveries. A total of 91 F-35s are planned to be delivered to the U.S. military and foreign customers this year. “The primary goal following any mishap is the prevention of future incidents,” the office said. “We will take every measure to ensure safe operations while we deliver, sustain and modernize the F-35 for the warfighter and our defense partners.” The problem with the defective fuel tubes is the latest in a string of recent supply chain issues that have plagued F-35 prime contractor Lockheed Martin and engine manufacturer Pratt & Whitney, and comes as Defense Secretary Jim Mattis sent a memo directing the Air Force, Marine Corps and Navy to boost the F-35′s mission capable rate to 80 percent. The Pentagon halted F-35 deliveries in March amid disagreements over whether the department or Lockheed should foot the bill for retrofitting part of the fleet that had not received corrosion-preventing primer in certain fastener holes. Deliveries resumed in May once the parties hammered out an agreement — although it was never revealed to the public exactly how the expenses would be paid off. In 2016, certain F-35As were grounded after it was found that coolant lines inside the jets' fuel tanks were rimmed with faulty insulation, which was prone to disintegrating. https://www.defensenews.com/air/2018/10/15/most-f-35s-return-to-flight-operations-after-fuel-tube-problem