30 avril 2021 | International, Aérospatial

Eurofighter submits offer of the best all-round package for Finland

The offer to Finland’s HX fighter replacement programme is backed by the Governments, air forces and industries of the United Kingdom, Germany, Italy and Spain, which make up the Eurofighter...

https://www.epicos.com/article/693555/eurofighter-submits-offer-best-all-round-package-finland

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  • How One Component Improved U.S. Navy F/A-18 Fleet Readiness

    28 juillet 2020 | International, Aérospatial, Naval

    How One Component Improved U.S. Navy F/A-18 Fleet Readiness

    The U.S. Navy's F/A-18 and EA-18G fleets have experienced a dramatic turnaround. In 2017, less than half of the Navy's Boeing F/A-18 Super Hornets were able to fly. Now, 80% of its carrier-based fighters are ready for missions. The solution involved fixing a single component within the General Electric F414 engine. The Navy faulted constrained spending following the 2008 financial crisis and increased demand from the wars in the Middle East as reasons for the fleet's lack of readiness. More specifically, those conditions exacerbated an issue embedded in the military's vast supply chain. For 20 years, the Super Hornets and EA-18G Growlers have continually had electronic systems and new sensors added that placed greater and greater demand for power from its General Electric engine. That demand taxed a key component of the F414's electrical power generation system—its generator control unit (GCU), which keeps the generator output within a specified range. Initial attempts to address the GCU's issues through “component-level reliability improvements were not sustainable,” Navy spokeswoman Gulianna Dunn tells Aviation Week. Eventually, the GCU, already in short supply, failed to keep pace, causing a cascading effect on the availability of the carrier-based fighters. In the words of a Navy program official, the GCU was the “top platform degrader for all naval aviation.” When sequestration-era spending limits were imposed on the Pentagon in 2013, the entire military faced across-the-board funding cuts, including the operations and maintenance accounts. The Navy had to make tough choices about what bills it would pay and what to defer. At the same time, flight hours for the Super Hornet and Growler in the Middle East increased to meet the high operational tempos of Operation Enduring Freedom and Operation Inherent Resolve. As the Navy reduced aviation sustainment budgets, the program office did not have sufficient funding to purchase spare parts. From fiscal years 2013-16, the program office requested between $193.6-311.5 million and received between $85.2-136.3 million, according to a 2019 Defense Department Inspector General report. To compensate, Navy officials cannibalized aircraft to obtain the required spare parts. Maintainers removed working parts from an aircraft and installed them on a second jet to make that aircraft operational. A backlog of spare parts exacerbated fleet readiness and availability rates—an issue that affected the GCU acutely. New mission payloads created new types of electrical load, straining the aircraft's electronics, and wearing out the GCU at a faster rate. The second-generation (G2) and G3 GCU models that equipped the fleet could handle only about 150 flight hours. To increase reliability General Electric Aviation Systems, in consultation with the Navy, began working to redesign the GCU. A G3-to-G4 conversion kit could reach up to 532 flight hours. A G4 GCU was even better—sustaining 1,220 flight hours. Naval Air Systems Command (Navair) flight-tested the G4 in August 2015, and GE started production in mid-2016, Joe Krisciunas, general manager and president of GE Aviation Electrical Power Systems, tells Aviation Week. But the part was still only being manufactured at a minimal rate. The matter came to a head in October 2018, when then-Defense Secretary Jim Mattis set an 80% mission-capable readiness goal. At the time, only 260 F/A-18 and EA-18G aircraft were capable of flying missions—approximately 60%, far short of the mandate. In response, the Navy convened a Reliability Control Board (RCB) in 2019 to improve the F/A-18 and EA-18G mission-capable rate. The board pinpointed the main problem—insufficient production of the F414's GCU. The Navy had 200 of the units on back order. Navair worked with GE to ramp up GCU production, according to Lt. Cmdr. Jason Shaw, power and propulsion lead at the F/A-18 and EA-18G program office. The RCB determined GE was producing roughly six GCUs per month that would funnel into the program office, Boeing or Naval Supply Systems Command (Navsup). The program and Boeing had predictable delivery schedules, but Navsup would only receive GCUs that were produced beyond what the other two contracts required. “It created a hole on the supply shelf,” Shaw says. “When a jet would lose a GCU, there was no other one to replace it from supply.” The team brainstormed and decided GE would increase production to about 21 GCUs each month, while Navair would defer a contract for 320 GCU conversion kits to 2021. Pushing the contract would leave room for Navsup to acquire a more predictable delivery schedule. The company doubled its GCU production rate from 2018 to 2019, and almost doubled it again in 2020 to reach the 21 units per month rate, Krisciunas says. These courses of action resulted in zero GCU back orders by mid-June 2020. Additionally, the team is working with GE to resolve production issues related to GCU testing capacity. The plan is to purchase new, larger test stands and upgrade software on existing test equipment. This would allow the company to conduct more tests and further increase production. The test stand is a large electric motor that simulates the engine spinning the gearbox, and it has a pad that duplicates the GCU interface. A test stand costs approximately $1.5-2 million and typically takes 15-18 months to get up and running, Krisciunas says. Still, more improvements are being made: The program office is now assessing wiring issues that may have also contributed to low GCU reliability. The service awarded a $17 million contract to purchase additional software and cables for Automated Wiring Test Sets, which will allow aircraft mechanics to identify system faults. “The U.S. Navy is the only [Pentagon] military branch to have met and sustained the 80% readiness call that Mattis put out, and that is largely associated with resolving the issues with GCUs,” Shaw says. https://aviationweek.com/defense-space/aircraft-propulsion/how-one-component-improved-us-navy-fa-18-fleet-readiness

  • France, Germany kick off race for ‘quantum leaps’ in aircraft and tank tech

    20 juin 2018 | International, Aérospatial, Terrestre

    France, Germany kick off race for ‘quantum leaps’ in aircraft and tank tech

    Sebastian Sprenger COLOGNE, Germany ― The defense ministers of Germany and France have inked new agreements for the joint development of a new combat aircraft and a next-generation tank, key programs that could shape the European defense landscape for decades to come. Ursula von der Leyen and Florence Parly signed the letters of intent on the sidelines of a bilateral Cabinet meeting in Berlin on Tuesday. The documents are meant to provide the necessary guidance to set up a program of record for the Future Combat Air System and the Main Ground Combat System. A defense spokesman in Berlin told Defense News the agreement calls for the examination of potential management structures, for example through OCCAR, a European collective for joint weapons acquisition and management. The core members of OCCAR include France, Germany, the United Kingdom, Italy, Spain and Belgium, though other nations can partake in individual projects. By: Sebastian Sprenger According to a German Defence Ministry statement, the signed documents establish the two governments' “left and right boundaries” for the programs. “Industry is now requested to fill the space,” the statement reads. “Both projects ... stand for technological quantum leaps that shall be approached together while integrating the strengths of each nation's industries.” Led by France, the Future Combat Air System aims to replace the Eurofighter Typhoon in Germany and the Rafale aircraft in France. The Main Ground Combat System, helmed by Berlin, will succeed the German Leopard 2 tanks ― used widely in Europe and beyond ― and the French Leclerc. The new aircraft are envisioned to hit the skies by 2040, while the the new tanks are pegged to roll in the mid-2030s. Connected to the tank effort is also an artillery replacement plan, named Common Indirect Fire System. While both projects initially are exclusively German and French, partner countries will have an opportunity to join once a “strong foundation” is established by the two lead nations, the German Defence Ministry said. KNDS, a joint venture by German tank-maker Krauss-Maffei Wegmann and France's Nexter, unveiled a European Main Battle Tank as an interim step toward the future tank program at the Eurosatory defense trade show in Paris last week. The next-generation combat aircraft project, which officials said will include a sizable unmanned component, is slated to enter a concept-study phase by the end of the year, according to the German ministry. Both efforts are still some time away from formulating concrete military requirements, to which companies eventually can tailor their offers. That cooperation process is expected to be thornier than the agreement on political pronouncements so far that paint Germany and France as the motor of Europe's new defense ambitions. Absent from Tuesday's joint statement was any mention of cooperative work on a new air-to-ground missile and modernization of the Tiger attack helicopter to a Mark 3 version. The two ministers had announced at the ILA Berlin air show in April that the two countries would cooperate on the airborne weapon and the midlife upgrade of the combat helicopter. A common weapon for both French and German Tiger helicopters would cut down integration costs for the missiles. https://www.defensenews.com/global/europe/2018/06/19/france-germany-kick-off-race-for-quantum-leaps-in-aircraft-and-tank-tech/

  • Contracts for October 21, 2021

    22 octobre 2021 | International, Aérospatial, Naval, Terrestre, C4ISR, Sécurité

    Contracts for October 21, 2021

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