4 avril 2024 | International, Aérospatial
First MQ-4C Triton drone arrives at Naval Air Station Sigonella
The Navy's Triton drone reached initial operating capability last fall and is now being forward-deployed.
9 avril 2018 | International, Aérospatial
How stealthy is Boeing’s new Super Hornet?
By: Valerie Insinna
WASHINGTON — The Block III Super Hornet is getting a marginal increase in stealth capability, but if you're expecting the invisible aircraft of President Donald Trump's dreams, think again.
Building a “stealthy” Super Hornet has been one of Trump's talking points since he was elected to the presidency. During a March trip to Boeing's plant in St. Louis, he claimed the U.S. military would buy Super Hornets with “the latest and the greatest stealth and a lot of things on that plane that people don't even know about.”
Trump was referring to one of the Super Hornet's Block III upgrades slated to be incorporated on jets rolling off the production line in 2020: the application of radar absorbent materials or RAM, also known as stealth coating.
But far from being “the latest and greatest,” the company has already used the exact same materials on the on the Block II Super Hornet to help decrease the chances of radar detection, said Dan Gillian, who manages Boeing's F/A-18E/F Super Hornet and E/A-18G Growler programs.
Block III jets will get “a little more” of that coating applied to them, “and in a few different areas to buy a little bit more performance,” Gillian told Defense News in a March interview.
All in all, those improvements will reduce the aircraft's radar cross section by about 10 percent, and with very low risk, he said.
Although the general public tends to think of stealth like the invisibility cloak from Harry Potter or Wonder Woman's invisible plane, stealth is more of a continuum that is enabled and affected by many factors, experts told Defense News.
“It's not a Romulan cloaking device,” said Richard Aboulafia, a Teal Group aviation analyst, referencing a technology from Star Trek that allowed spaceships to be invisible to the naked eye and electro-optical sensors.
“It's about reducing the likelihood that an adversary will see you first. And seconds count, so if it buys a little extra time, then it helps.”
The most important contributors to low observability are the aircraft's shape and the use of LO coatings, with airframe shape commonly seen as twice as important as the coatings, he said.
Stealth fighters from the oddly angled F-117 to the F-22 and F-35, with their rounded edges, were all designed to bounce radar waves away from an aircraft, sometimes at the expense of aerodynamic performance or other attributes, said Brian Laslie, an Air Force historian and author.
That being said, the Super Hornet, with it's external stores and pylons, is not going to replicate the low observability of the joint strike fighter, which was designed from the beginning with stealth in mind.
“But just because it's not a pure LO aircraft doesn't mean that the designers weren't concerned with the radar return,” said Laslie, who added that it's “reasonable” to expect a 10 percent decrease to the aircraft's signature by augmenting Block III jets with additional RAM coating.
Shining a spotlight on the Super Hornet's low observable attributes may have helped sell Trump on future orders, Aboulafia speculated.
“It might be useful in the real world too, but in a much more marginal way,” he said.
One of those benefits, according to Laslie, is that the LO performance upgrade could also enable the Navy to be more flexible in its mission planning. An aircraft can be more or less easily detected by radar depending on how it is positioned or the route used by the plane, so having more radar-absorbing materials on the Super Hornet could give the pilot more options.
“I think what the Navy is doing is trying to maybe reduce enough of the cross section of the F-18 in high intensity combat scenarios,” Laslie said.
“I don't think they're trying to make the F/A-18 a stealth aircraft,” he continued. “But if they can reduce the radar cross section enough that in certain scenarios it is more difficult to pick the Super Hornet up, that would be of benefit to the Navy.”
While the president has done much to focus public attention on the Super Hornet's upcoming LO upgrade, the Block III actually offers a relatively modest increase in stealth compared to earlier concepts floated by Boeing.
In 2013, when the company began evaluating how to attract future sales from the Navy as production slowed, it started promoting an “Advanced Super Hornet” configuration that would have improved the aircraft's signature by 50 percent. That version of the jet included structural enhancements and an enclosed weapons pod, but Boeing ultimately stepped away from that concept.
“Those big compromises you have to make to get the higher levels of stealth like putting your weapons in a bay, we don't think that's a necessary part of the Block III story for the Super Hornet,” Gillian said.
Sur le même sujet
-
-
15 janvier 2020 | International, Aérospatial, Naval, Terrestre, C4ISR, Sécurité
Contract Awards by US Department of Defense - January 14, 2020
AIR FORCE Lockheed Martin Corp., Fort Worth, Texas, has been awarded a $32,860,395 hybrid cost-plus-fixed-fee and firm-fixed-price modification (P00068) to previously-awarded contract FA8615-12-C-6016 for contractor logistics support to the Taiwan F-16 Peace Phoenix Rising program. This modification provides for contractor logistics support, repair and return and diminishing manufacturing source management services for Taiwan F-16s Active Electronically Scanned Array Radar. Work will be performed in Fort Worth, Texas; and Taiwan, and is expected to be complete by Dec. 31, 2025. This modification involves 100% foreign military sales to Taiwan. Foreign Military Sales funds in the amount of $25,001,279 are being obligated at the time of award. The Air Force Life Cycle Management Center, Wright-Patterson Air Force Base, Ohio, is the contracting activity. NAVY Noble Sales Co. Inc., Rockland, Massachusetts, is awarded a $30,000,000 indefinite-delivery/indefinite-quantity, fixed-price contract that includes provisions for economic price adjustment to acquire supplies and provide related store operation services required by Naval Supply Systems Command Fleet Logistics Center, Norfolk, for two commercial retail stores on the Naval Support Activity, Crane, Indiana, for materials needed by the Naval Facilities Command Public Works Department. The contract includes a five-year base ordering period with an option to extend services for a six-month ordering period pursuant to the Federal Acquisition Regulation 52.217-8. All work will be performed in Crane, Indiana. The ordering period is expected to be completed by January 2025; if the option is exercised, work will be completed by July 2025. Fiscal 2020 operations and maintenance funds (Navy) in the amount of $100,000 will be obligated to fund the contract's minimum amount, and funds will expire at the end of the fiscal year. This contract was competitively procured with the solicitation posted to the Federal Business Opportunities website with five offers received. Naval Supply Systems Command Fleet Logistics Center, Norfolk, Contracting Department, Norfolk, Virginia, is the contracting activity (N00189-20-D-0009). ARMY CEMS-RS&H ABQ JV,* San Antonio, Texas, was awarded a $9,500,000 firm-fixed-price contract for architect and engineer services. Bids were solicited via the internet with 22 received. Work locations and funding will be determined with each order, with an estimated completion date of Jan. 9, 2025. U.S. Army Corps of Engineers, Albuquerque, New Mexico, is the contracting activity (W912PP-19-D-0017). Goodwill Industries of San Antonio Contract Services, San Antonio, Texas, was awarded a $7,858,420 modification (P00006) to contract W81K04-18-C-0002 for record processing services, inventory, track and store service treatment records for Army service members who have separated or retired from the Total Force. Work will be performed in San Antonio, Texas, with an estimated completion date of Jan. 25, 2021. Fiscal 2020 and 2021 Defense Health Program, defense funds in the amount of $7,858,420 were obligated at the time of the award. U.S. Army Health Contracting Activity, San Antonio, Texas, is the contracting activity. DEFENSE LOGISTICS AGENCY Alamo Strategic Manufacturing,** San Antonio, Texas, has been awarded a maximum $8,625,000 modification (P00005) exercising the first one-year option period of a one-year base contract (SPE1C1-19-D-1122) with two one-year option periods for knee and elbow pads. This is a firm-fixed-price, indefinite-quantity contract. Locations of performance are Texas, Puerto Rico and Massachusetts, with a Jan. 30, 2021, performance completion date. Using military services are Army, Air Force and Marine Corps. Type of appropriation is fiscal 2020 through 2021 defense working capital funds. The contracting activity is the Defense Logistics Agency Troop Support, Philadelphia, Pennsylvania. *Small Business **Small Disadvantaged Business https://www.defense.gov/Newsroom/Contracts/Contract/Article/2057245/source/GovDelivery/
-
13 septembre 2022 | International, C4ISR
US Army customizing communication gear for regional challenges
'It is a big army,' said Nicholaus Saacks with PEO C3T. 'We have to be prepared to fight in a lot of different places.'