27 janvier 2024 | International, Naval
‘Back to the ‘80s’ as French navy prepares for new threats
The French navy includes two or three days of drills under “back to the ‘80s” conditions whenever it deploys its carrier strike group.
15 août 2019 | International, Aérospatial
DARPA Invites Proposals For Active-Flow-Control X-Plane
By Graham Warwick
DARPA has formally launched a program to build and fly an X-plane designed around active flow control (AFC), potentially eliminating the need for moving control surfaces.
Designing from the ground up around AFC, rather than modifying an existing aircraft, is expected to yield performance and operational benefits.
A broad agency announcement (BAA) was released on Aug. 12 for the first two of four planned phases of the Control of Revolutionary Aircraft with Novel Effectors (Crane) program. A proposers' day is scheduled for Aug. 26 and proposals are due to be submitted by Nov. 8.
A budget of $21 million is available for multiple awards under the 12-month Phase 0, which will focus on the aircraft design process and understanding the trade space. DARPA expects performers to enter this phase with multiple candidate configurations and flow-control approaches. Each Phase 0 contract will end with a conceptual design review for one or more configurations.
Phase 1 will continue to mature up to two concepts and is expected to involve component-level testing and demonstrations to inform a system requirements review. This nine-month phase is planned to culminate in a preliminary design review for the proposed X-plane.
DARPA plans to downselect to one performer at the end of Phase 1 in second-quarter fiscal 2022 and award a contract for Phase 2 detailed design. This is planned to conclude in a critical design review and lead to a go/no-go decision in the second quarter fiscal of 2023 for Phase 3 building and flying of the X-plane.
First flight is planned for the third quarter of fiscal 2024. DARPA wants a “tactically relevant scale aircraft,” the BAA says. This may include a “clean-sheet design or modification of an existing aircraft.” The agency expects substantial use of off-the-shelf components for the flight demonstrator so that program resources can be focused on AFC development and testing.
AFC modifies the flow field around the aircraft using mechanical or fluidic actuators. The BAA specifically excludes using large external moving surfaces, mechanical vectoring of engine exhaust or other traditional moving aerodynamic control surfaces.
AFC applications identified in the BAA include eliminating moving control surfaces for stability and control and improving takeoff and landing performance, high-lift flight, thick-airfoil efficiency and high-altitude flight. Proposers may identify additional applications and benefits.
A NATO technical study involving Lockheed Martin, BAE Systems and academic institutes in the U.S. and UK identified that an unmanned combat aircraft with AFC could have stealth and other potential performance benefits during the ingress and egress phases of a strike mission.
https://aviationweek.com/defense/darpa-invites-proposals-active-flow-control-x-plane
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19 décembre 2023 | International, Terrestre, Sécurité
Canada to participate in United States-led Operation PROSPERITY GUARDIAN
Today, the Honourable Bill Blair, Minister of National Defence, announced that Canada will participate in Combined Maritime Forces’ (CMF) Op PROSPERITY GUARDIAN, a United States-led operation announced by the Secretary of Defense, Lloyd J. Austin III.
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2 juillet 2019 | International, Aérospatial
Karem, Northrop, Raytheon team for Army’s future attack recon helo competition
By: Jen Judson WASHINGTON — Karem Aircraft has forged a team with Northrop Grumman and Raytheon to compete in the Army's Future Attack Reconnaissance Aircraft (FARA) competition, according to a July 1 company statement. Karem was one of five companies awarded a prototyping development contract in April. While details are scant as to how each company will contribute to the overall design, due in January or February of 2020, the teaming announcement says the three companies together “will apply decades of combined knowledge, skills and abilities to bring the best of vehicle and systems technologies and processes to the first aircraft within the Future Vertical Lift family of systems.” Karem is bringing its “unique active variable speed rotor technologies,” which have been developed over the last 10 years through collaboration with the Army, to the teaming effort. The company's experience “will be augmented with Northrop Grumman's manned and autonomous military aircraft development, system integration, production and support expertise and Raytheon's systems architecture, mission equipment and weapons capabilities,” the company statement adds. While Karem competed to be one of two teams selected to build a flying aircraft for the Army's Joint Multi-Role Technology Demonstrator (JMR TD), it was not selected. Instead, the Army awarded it a smaller technology development contract to continue to refine its unique technology. The JMR TD program will inform a Future Long-Range Assault Aircraft (FLRAA) program of record to replace UH-60 Black Hawks and AH-64 Apache helicopters. The JMR TD program is not a head-to-head competition between the Sikorsky-Boeing SB-1 Defiant coaxial helicopter and the Bell V-280 Valor tiltrotor aircraft, but will inform the FLRAA program. Bell and a Sikorsky-Boeing team have each built a JMR TD aircraft which is flying in that program. AVX Aircraft Co. also received a smaller technology development contract similar to Karem's award. The Karem-Northrop-Raytheon team will compete with an AVX-L-3 Communications Integrated Systems team, Bell, Boeing and Lockheed Martin-owned Sikorsky to provide design plans to the Army for FARA. The Army will choose just two teams to advance to build a flyable prototype, much like it did for the JMR TD program — except this time, one of those aircraft will be chosen for production. The Army has set an ambitious schedule for FARA, with plans to fly prototypes in 2023. A production decision could happen in 2028, but the service is looking at any way possible to speed up that timeline. Truncating the timelines for both FLRAA and FARA has been on the table for many years and the service continues to assess any way possible to bring the aircraft online faster. With the advent of the new Army Futures Command — focused on six major modernization priorities, of which FVL is third — the service is moving faster on prototyping capability to ultimately procure major weapon systems at a somewhat unprecedented speed. Through the AFC and the use of contracting mechanisms like OTAs, the Army has found a way to compress parts of the acquisition process that previously took three-to-five years into periods of time often amounting to less than a year. FARA is intended to fill a critical capability gap currently being addressed by the AH-64E Apache attack helicopter teamed with Shadow unmanned aircraft, following the retirement of the OH-58D Kiowa Warrior helicopters. The service has tried and failed three times to fill the gap with an aircraft. https://www.defensenews.com/land/2019/07/01/karem-northrop-raytheon-forge-team-for-armys-future-attack-recon-helo-competition/