11 juillet 2018 | International, Aérospatial, C4ISR
By: Shawn Snow
The Corps is looking to install antennas in its F/A-18 C/D Hornets to help the aircraft defeat GPS jammers.
In a request for information posted in early June by Naval Air Systems Command, or NAVAIR, the Corps wants to install the anti-jam antennas known as the Air Navigation Warfare Program, or NAVWAR, in 120 of the legacy Hornets.
The anti-jamming antenna “provides Global Positioning System (GPS) protection for Naval Air platforms by allowing for continued access to GPS through the use of Anti-Jam (AJ) Antenna Systems designed to counter GPS Electronic Warfare threats from intentional and unintentional interference,” Michael Land, a spokesman for NAVAIR, told Marine Corps Times in an emailed statement Tuesday.
The development comes as U.S. aircraft have faced mounting electronic warfare attacks against aircraft in Syria.
Army Gen. Tony Thomas, the commander of U.S. Special Operations Command, told audience members at a conference in April that adversaries were trying to bring down AC-130 gunships in Syria using electronic warfare, or EW.
“Right now in Syria, we're in the most aggressive EW environment on the planet, from our adversaries,” Thomas said. “They're testing us every day, knocking our communications down, disabling our AC-130s, et cetera.”
The Corps is amid an overhaul of its forces and equipment to prepare for a potential fight with near-peer adversaries like Russia and China.
Both countries boast an impressive array of electronic warfare capabilities. Russia has been using the Syrian battlefield to hone its EW skills.
The top Marine has oft repeated the threats posed to GPS systems from rising adversaries and says the Corps needs to be prepared to fight in GPS denied environments.
The F/A-18 is the Corps' bridging aircraft as it moves to the new high-tech F-35. As the Corps transitions the older legacy Hornets are undergoing a service life extension, meaning the aircraft are being updated to handle the modern battlefield.
“Installation in F/A-18 A-D helps ensure continued mission capability as the service life of the aircraft is extended and facilitates supportability by using more common equipment,” Land said.
The Navy and the Marine Corps already use the anti-jamming GPS antenna in a number of airframes, according to Land.
“Typical installations replace a platform's existing GPS antenna with a NAVWAR antenna and separate antenna electronics, while leaving a platform's GPS receiver in place,” Land added.
The Corps expects the F/A-18 to be in sunset by 2030.
As the Corps moves to the F-35 and phases out its Hornets, the legacy fighters will consolidate on the West Coast by 2018 with the exception of VMFA (AW)‐242, which will remain aboard the Corps' air station at Iwakuni, Japan until it transitions to the F-35 in 2028, according to the Corp's 2018 aviation plan.
10 juin 2022 | International, Aérospatial
En 2017, la marine indienne a lancé le programme MRCBF afin de se procurer 57 avions de combat embarqués multi-rôles pouvant être mis en oeuvre aussi bien
1 mars 2019 | International, Aérospatial
By: Valerie Insinna ORLANDO, Fla. — The U.S. Air Force wants more fighters. But it didn't necessarily want the F-15X, and it didn't intend to buy any in the upcoming fiscal 2020 budget, its top two leaders confirmed Thursday. “Our budget proposal that we initially submitted did not include additional fourth-generation aircraft,” Air Force Secretary Heather Wilson told reporters during a Feb. 28 roundtable at the Air Force Association's Air Warfare Symposium. Wilson's comments confirm reporting by Defense News and other outlets who have reported that the decision to buy new F-15X aircraft was essentially forced upon the Air Force. According to sources, the Pentagon's Cost Assessment and Program Evaluation Office was a key backer of the F-15X and was able to garner the support of the Office of the Secretary of Defense. Asked by one reporter, point blank, whether the Air Force wanted new F-15s, Wilson and Air Force Chief of Staff Gen. Dave Goldfein danced around the question. “We want to buy new airplanes,” Goldfein said. “We want to buy 72 aircraft a year,” Wilson added. Air Force leadership has confirmed that, as long as current budget plans don't change, it will request money for new F-15s in FY20. The service plans to purchase eight F-15X planes from Boeing in FY20, with an expected total buy of about 80 jets, Bloomberg reported Feb. 19. It's normal for the Pentagon to be intimately involved with each service's portion of the budget — and even to overrule service leadership and move funding around to better support the White House's aims — something that Wilson herself alluded to in her comments. “The Air Force and each of the services put in their budget proposals, given the top line that we've been allocated, and then there are further discussions that include the potential for some additional funds throughout that process,” she said. “It's not something that is an Air Force decision. Ultimately it's a Defense Department budget, and it goes into an overall presidential budget.” However, the potential F-15X buy has received increased scrutiny for a number of reasons. For one, Wilson has been vocal in dismissing reports that the Air Force had been considering purchasing an upgraded F-15. “We are currently 80 percent fourth-gen aircraft and 20 percent fifth-generation aircraft,” she told Defense News in September. "In any of the fights that we have been asked to plan for, more fifth-gen aircraft make a huge difference, and we think that getting to 50-50 means not buying new fourth-gen aircraft, it means continuing to increase the fifth generation.” Additionally, when Bloomberg broke the news that the Air Force would buy new F-15Xs in December, it reported that the decision was pushed by then-Deputy Defense Secretary Patrick Shanahan, a former Boeing executive who has since become acting defense secretary. Shanahan's spokesman has rebutted those reports, stating that “any DoD programmatic decisions impacting Boeing were neither made nor influenced by Mr. Shanahan.” One official alluded to sustainment costs as being a critical factor in the decision to buy the F-15X over additional F-35 fighter jets. Boeing has not disclosed its proposed F-15X unit price, with numbers from $100 million to less than $80 million having been reported by various outlets. Gen. Mike Holmes, head of Air Combat Command, declined to comment on the cost per plane in a later roundtable, but said that some of the value of the F-15X proposal lays in the total ownership cost of the plane, especially when taking into account the expense of sustaining the F-35. “There's more to think about than just the acquisition cost. There's the cost to operate the airplane over time. There's the cost to transition at the installations where the airplanes are — does it require new military construction, does it require extensive retraining of the people and then how long does it take?” he said. “We're pretty confident to say that we can go cheaper getting 72 airplanes with a mix of fifth and fourth gen than we did if we did all fifth gen.” https://www.defensenews.com/digital-show-dailies/air-warfare-symposium/2019/02/28/the-air-force-doesnt-want-f-15x-but-it-needs-more-fighter-jets/
20 juin 2019 | International, Autre défense
By: Kelsey Reichmann WASHINGTON — The U.S. agency responsible for making explosive materials used in nuclear weapons is facing challenges that could impact the country's planned modernization of its nuclear arsenal, according to a report by the Government Accountability Office. The National Nuclear Security Administration, a semiautonomous agency within the Energy Department, is facing three main challenges, according to the report: a dwindling supply of explosive materials, aging and deteriorating infrastructure, and difficulty in recruiting and training qualified staff. This report comes amid congressional debate over the cost of modernizing the U.S. nuclear arsenal, an effort driven by President Donald Trump. NNSA's supply of materials, which are “highly specialized” with specific chemical and physical characteristics, are in low supply, the report says. Furthermore, the NNSA is lacking the knowledge base to produce the materials, as the recipes to make them were not well-documented, or the processes themselves infrequently practiced, the report notes. Challenges in obtaining materials is not a new issue for the NNSA, the watchdog notes. The agency experienced a similar situation with a material known as “Fogbank,” and the GAO reported in March 2009 that the NNSA lacked the knowledge to manufacture the material — leaving the process for Fogbank “dormant for about 25 years." Fogbank is used in the production of the W76-1, a warhead for the Navy's Trident ballistic missile. Under the Trump administration's plans for a new low-yield nuclear weapon, the U.S. is making a W76-2 variant, which entered production earlier this year. The GAO notes that when the NNSA is actually able to replicate formulas for materials, procuring those materials has proved challenging, given the irregular and small order specifications to contractors. But the GAO identifies aging infrastructure as the greatest risk to the NSSA. “The NNSA 2019 Master Asset Plan states that 40 percent of the explosives infrastructure of NNSA's sites is insufficient to meet mission needs, which can lead to contamination of explosive products or limit the use of facilities,” the report says. It notes that contamination has already occurred from rust falling off rafters and grass blowing through cracks in the walls, contaminating batches of explosives. Aging facilities must receive updates to modern safety standards to protect employees, the GAO says. The Los Alamos High Explosives Chemistry Laboratory, for example, was built in the 1950s and has struggled to adopt to modern instrumentation, according to the report. Facilities also deal with limited storage, the report says, meaning explosives can be stored in a single location where they could potentially cause a chemical reaction. The report also cites NNSA documents that describe challenges in recruiting qualified staff, who often must have a security clearance. For example, Pantex, a contractor hired by the agency, in 2018 estimated it would need 211 full-time staff members. However, in November that year, it reported only 172 full-time employees. Officials with agency contractors told the GAO that the problem is largely due to the competitive industry; in particular, Pantex competes with oil and gas companies in Texas. The company has now expanded its recruitment efforts to include local colleges and universities, the report says. In a written response to the report, the head of the NNSA, Lisa Gordon-Hagerty, said the “GAO's observations and recommendations are consistent with [the Department of Energy]/NNSA's recent efforts to centralize management of energetic material." The Office of Safety, Infrastructure, and Operations previously identified many of the infrastructure data issues presented in the report and developed a series of actions aimed at improving the accuracy of asset data,” she wrote. “These efforts have already resulted in improved data quality, and the accuracy and consistency of data will continue to improve as additional actions are completed.” https://www.defensenews.com/global/the-americas/2019/06/19/government-watchdog-finds-3-issues-disrupting-us-nuclear-modernization-efforts/