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April 2, 2024 | International, Aerospace

Seeking to make F-35s ready for war, maintainers think outside the box

As the F-35C fleet expands at Naval Air Station Lemoore, the service and a government oversight group worry the jets aren’t available for missions enough.

https://www.defensenews.com/air/2024/04/02/seeking-to-make-f-35s-ready-for-war-maintainers-think-outside-the-box/

On the same subject

  • US Army wants $364 million for Defender Pacific in FY21

    February 26, 2020 | International, Aerospace, C4ISR

    US Army wants $364 million for Defender Pacific in FY21

    By: Jen Judson WASHINGTON — The U.S. Army is requesting $364 million to conduct a division-sized exercise in the Indo-Pacific region in fiscal 2021, the service confirmed to Defense News. Yet, the cost breakout details are classified, according to an Army spokeswoman. The exercise is fueled by a rising China, characterized in the National Defense Strategy as a long-term, strategic competitor of the United States. The NDS lays out a world where great power competition rather than counterterrorism will drive the Defense Department's decision-making and force structure. While the U.S. Army has 85,000 permanently stationed troops in the Indo-Pacific region and is already conducting exercises such as Pacific Pathways with allies and partners, the service is aiming to practice rapid deployment from the continental United States to the Pacific. In FY20, the Army will conduct a smaller version of Defender Pacific while Defender Europe will get more investment and focus. But then attention and dollars will swing over to the Pacific in FY21. Defender Europe will be scaled back in FY21. The Army is requesting just $150 million to conduct the exercise in Europe, according to the Army. This year it has been reported that Defender Europe, already underway with troops and equipment arriving at ports on the continent this month, will cost about $340 million, which is roughly in line with what the service is requesting in FY21 for the Pacific version. The only specific funding lines broken out for the FY21 Defender Pacific exercise is home station training; it's unclear if those numbers are included in the total cost. The Army is requesting $150,000 for home stationing training devoted specifically for Defender Pacific and is also asking for another $214,252 for an “expanded level deployment exercise that demonstrates employment of [Continental United States]-based forces into the Pacific Theater,” according to budget documents. The funds include additional transportation, maintenance and operations for the exercise. Defender Pacific will build upon the U.S. Army's expanding role in the region. The service is already growing its Pacific Pathways exercise series and plans to focus on reinforcing the Oceania region this year. The series began in 2014 and has supported training efforts that satisfy bilateral needs between the U.S. Army and its allies and partners in the region in roughly three rotations each year for about 10 months total. Last year, Pacific Pathways shifted from shorter rotations that involved more countries to longer visits that involve fewer countries as a way to improve bilateral relations. And participation has grown from a battalion-sized task force to roughly the size of a brigade. The Defender series is intended to be a regular exercise each year in the Pacific and Europe with the regions trading off being the larger exercise every other year. https://www.defensenews.com/land/2020/02/25/army-wants-364-million-to-put-on-defender-pacific-in-fy21/

  • Enhancing Unmanned Operations in Extreme Conditions with the Power of Two-Stroke

    July 9, 2019 | International, Aerospace

    Enhancing Unmanned Operations in Extreme Conditions with the Power of Two-Stroke

    Peter Lietz, Head of International Business Development for Hirth Engines, explains why engine manufacturers must raise the endurance bar for unmanned aerial vehicles (UAVs) to advance capabilities in extreme weather conditions. Drones have become a popular choice for various exploits, from hobbyist aerial photography to large organisations such as Amazon exploring the future of delivery services. In the same vein, governments, militaries and research groups are exploring the use of UAVs to enable highly effective monitoring of unforgiving terrains without risking manned aircraft or land-based patrols. The need for unmanned aerial systems to navigate harsh environments is vital for the maritime, military and commercial sectors. Providing reliable and to the minute information on the status of, and threats to, environments like the Arctic is crucial as governments prepare to take action against significant issues such as climate change and increases in populations. UAVs will play a crucial role in this future considering the need for operators to monitor harsh environments and difficult to reach terrains, especially rotary UAVs. Reaching inhospitable locations can present a variety of logistical challenges, not least of which is the cost of sending land-based patrols or manned aircraft often from navy ships or other maritime vessels. This is where UAVs can enable operators to safely monitor terrains in a cost-effective and efficient way to better understand complex habitats. Carrying out monitoring exercises in areas such as the Artic where there is a real risk to life can be a major challenge. Through the use of well-engineered rotary UAVs, organisations are able to perform a variety of tasks with ease. The responsibility to advance the endurance capabilities of UAVs falls on engine manufacturers. For this reason, we must continue to innovate to increase performance. Over the last few years, rotary UAVs have grown in complexity, not only in terms of the platforms themselves but also the robustness and performance of the engines they run on. As the operational requirements for UAVs grows, engine manufacturers must continually innovate to improve power-to-weight ratios, reduce emissions, and accelerate capabilities in harsh environments. For a long time, fixed-wing UAVs were considered the optimal choice for endurance and speed over their rotary counterparts. However, this is changing rapidly thanks to enhancements in engine design. Rotary UAVs are now becoming a platform of choice due to their reduced logistical footprint and the ability to take off and land in a confined or limited space, especially in maritime environments such as on-board navy ships and coastguard cutters for example. The requirement for rotary UAVs to operate in extreme temperatures such as the cold of the Arctic or the severe heat of warmer climates is essential for operators. This is where two-stroke propulsion engines play a vital role. Two-stroke applications present rotary UAV manufacturers with a range of benefits, including ease of maintenance due to less moving parts and the ability to operate on heavy fuels which are a must for corrosive marine environments. Alongside this, two-stroke powered rotary UAVs are often capable of flying missions with a full payload in extreme conditions for more than five hours without overhaul. With this as a backdrop, it is vital for UAV and engine manufacturers to accelerate the development of propulsion systems capable of operating in extreme locations around the globe. As the industry moves towards hybrid and electric propulsion new challenges will arise and it is crucial that OEMs raise the bar to power the next generation of UAVs. In order to advance the endurance and capabilities of rotary UAVs, engine manufactures must look to innovate the propulsion technology used. Electric is an increasingly popular option for commercial drones. However, electric comes with its own challenges and limitations, such as operational endurance and increased weight of the electrical motors. Considering the performance of batteries in extreme temperatures in comparison to their fuel-based counterparts, there is a long way to go before pure electric UAVs will be capable of flying extended missions in harsh terrains. Hybrid applications that utilise both a combustion engine and electric propulsion systems will provide a bridge toward the future of pure electric flight. A clear advantage for hybrid applications is improving power to weight ratios to enable increased payload capacities. Hybrid UAV applications can be used in various functions, such as: electrically powered take-off and landing with conventional engines powering horizontal flight; or powering flight using only electrical motors whilst the combustion engine acts solely as a generator. In addition, safety is a key purpose behind the pursuit of hybrid applications. For UAV manufacturers, having the ability to convert to an electric battery should the combustion engine fail could make all the difference in enabling a safe landing. Operating UAVs in extreme weather conditions reduces the chances of potential health and safety issues associated with deploying staff or manned systems into harsh environments. In addition, a further key benefit of using UAVs is enabling the deployment of cost-effective systems that perform safely in extreme locations. Ultimately, developing UAVs that can fly farther and for longer in harsh environments will require engine manufacturers to consider alternative fuel and power systems such as heavy fuel two-stroke applications. Heavy fuel is widely considered a must in the maritime industry when dealing with complex environments due to its resistance to extreme temperatures. At Hirth, pairing a robust heavy fuel combustion engine with electrical propulsion is something we are pursuing to advance the future capabilities of unmanned systems and bridge the gap to pure electric flight. For further information about Hirth's portfolio of engines, visit: http://hirthengines.com/ About Hirth Hirth Engines GmbH, based near Stuttgart, with global sales operated from Vienna, has a long pedigree in the development of propulsion systems, stretching back to The innovative company was founded by German aviation pioneer and World War I ace Helmuth Hirth, a student of US inventor Thomas Edison, and collaborator with the Wright Brothers and Zeppelin. The company has set its sights on consolidating its leading role in the development of two-stroke engines for a range of diverse sectors including:  Unmanned and manned light and experimental aircraft (fixed wing and helicopters)  Hovercraft Next generation R&D will focus on hybrid engines, based on the company's winning formula of providing easy to maintain power to weight ratio propulsion technology across civilian and military applications. https://dronescrunch.com/enhancing-unmanned-operations-in-extreme-conditions-with-the-power-of-two-stroke/

  • NATO Partners Collaborate to Develop Next Generation of Medium Multi-Role Helicopters

    November 24, 2020 | International, Aerospace

    NATO Partners Collaborate to Develop Next Generation of Medium Multi-Role Helicopters

    France, Germany, Greece, Italy and the United Kingdom announced the launch of a multinational project on Next-Generation Rotorcraft Capabilities on 19 November 2020. The project is dedicated to the modernization of existing rotorcraft fleets and is one of NATO's High Visibility Projects (HVP). The project highlights NATO Allies' commitment to maintain a technological edge and to pursue multinational cooperation whenever possible. It aligns with Europe's desire to reduce dependency on U.S. defence equipment. A significant number of medium multi role helicopter capabilities currently operated by Allies will reach the end of their life cycle in the 2035 – 2040 period and beyond, with the subsequent need for replacements. The Next Generation Rotorcraft project aims to develop a solution for these upcoming requirements, leveraging a broad range of recent advances in technology, production methods, as well as operational concepts. Over the coming years, experts from all five nations will cover an exhaustive programme of work, starting with defining a robust Statement of Requirements and a multi-phase cooperation plan. The Defence Ministers of the five Allies signed a Letter of Intent to develop an entirely new helicopter capability. The signature was added virtually from the capitals of participating nations. “By investing our resources and channeling our development initiatives through a multinational framework, we are making sure Allies are equipped with the best available capabilities, which helps to maintain NATO's technological edge," stressed NATO Deputy Secretary General Mircea Geoană. https://www.defenseworld.net/news/28368#.X71e6s1KiUk

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