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January 16, 2024 | International, Aerospace

Northrop test fires rocket motor for new nuclear missile

Northrop Grumman aims to rein in the risks facing the Sentinel ICBM program, which Air Force Secretary Frank Kendall has said is "struggling."

https://www.defensenews.com/industry/techwatch/2024/01/16/northrop-test-fires-rocket-motor-for-new-nuclear-missile/

On the same subject

  • How Nanotech Will Help the U.S. Military Reach Mach 5

    November 25, 2019 | International, Aerospace

    How Nanotech Will Help the U.S. Military Reach Mach 5

    The U.S. government is pushing into hypersonic weapons in a big way, with at least five different weapons programs currently in development. Nanotechnology is shaping up to be a key tech that will enable delivery systems to survive traveling through the atmosphere at Mach 5 and above, with carbon nanotubes showing promise as strong, lightweight material that rapidly sheds heat. Hypersonic weapons are weapons that travel at incredible speeds through the atmosphere. Hypersonics start at Mach 5 (3,836 miles an hour), or five times the speed of sound. Pushing an object through the air at really, really fast speeds creates a unique problem: as speed increases, the friction from the object passing through air also increases. This friction generates heat. The skin of the SR-71 Blackbird strategic reconnaissance jet and the fasted manned airplane ever built regularly warmed to up to 500 degrees Fahrenheit at Mach 3. The X-15 rocket plane, flown during the 1960s, reached temperatures of 1200 Fahrenheit as it flew to Mach 6. At Mach 10, the friction is enough to “melt the toughest steel,” while at Mach 20, the temperature reaches an astounding 17,000 Fahrenheit. Eventually, hypersonic weapons could reach Mach 24. Scientists and engineers understand how to handle traditional air friction problems thanks to the technical challenges of spacecraft and nuclear warheads re-entering the atmosphere. But a missile warhead de-orbiting over an enemy target is only exposed to heat for a handful of minutes, as it transitions from space to the atmosphere and finally smashes into its target. A hypersonic weapon, on the other hand, spends its entire flight within the atmosphere and is exposed to high heat the entire time. An article at DefenseOne describes how scientists are working with carbon nanotubes to solve the heat issue. Scientists at Florida State University's High-Performance Materials Institute are looking into using carbon nanotubes as a construction material for hypersonic weapons. Carbon nanotubes are a synthetic material consisting of carbon tubes with a diameter as small as one nanometer. Carbon nanotubes are stronger than steel and insulate against heat. Now, researchers have discovered that soaking carbon nanotubes in phenol can increase their ability to disperse heat by one-sixth, allowing less nanomaterials to be used for the same job. What does this mean for hypersonic weapons? It means that materials that can stand the heat and stresses of hypersonic, atmospheric travel are on the way, and that hypersonic weapon designers could even safely achieve higher speeds by using thicker layers of the stuff. https://www.popularmechanics.com/military/research/a29847271/us-military-nanotech/

  • Raytheon wins pair of Air Force and Navy IT contracts

    December 3, 2020 | International, Aerospace, Naval, C4ISR

    Raytheon wins pair of Air Force and Navy IT contracts

    Andrew Eversden WASHINGTON — Raytheon's intelligence and space business announced Wednesday it was awarded a five-year basic ordering agreement for software services by LevelUP, a U.S. Air Force software factory. The award to the defense giant comes after the company announced a $70 million contract for submarine communications sustainment with the Navy. A Raytheon spokesperson was unable to provide a contract value for the Air Force deal. According to Raytheon, the basic ordering agreement will be the “primary avenue” for the Air Force's Platform One system, which serves as the service's primary platform for software development. The deal also impacts the development of the Advanced Battle Management System, the Air Force's platform to enable the Joint All-Domain Command and Control concept. “To combat increasingly fast, capable and agile threats, we must be able to deliver services within hours, or even minutes,” said David Appel, vice president of defense and civil solutions for space and C2 systems with Raytheon Intelligence and Space. “This agreement provides an avenue for the Air Force to achieve that. We're now positioned to rapidly deliver agile cyber solutions to the Air Force and the Department of Defense.” The Air Force decided to create the LevelUP factory after its work developing U.S. Cyber Command's Unified Platform, the combatant command's first major weapons system. The Air Force wanted the factory to help other components with similar software projects. Submarine communications Meanwhile, below sea level, Raytheon was awarded a $70 million contract to provide sustainment services to Navy submarines, the defense giant announced Dec. 1. Under the five-year, indefinite delivery, indefinite quantity contract, Raytheon will provide test, inspection, evaluation and restoration services of Submarine High-Data Rate, or SubHDR, mast components. SubHDR connects submarines to the Defense Department's Global Broadcast Service, a network that allows for one-way communication of data and video files. The SubHDR systems relies on a special mast antenna that connects the subs to networks above the sea. The Global Broadcast Service relies on the Milstar satellite constellation and Defense Satellite Communication System. According to a Raytheon news release, SubHDR “vastly improves a submarine's mission capability and the quality of life for submariners by affording them high-data rate communications with the world outside of the sub.” “The SubHDR system was created to support protected high-data rate communications for submarines,” said Denis Donohue, vice president for communications and airspace modernization systems for Raytheon Intelligence and Space. “SubHDR mast is a protected, secure and survivable system to support all communications needs, from day-to-day messaging to ensuring the commander-in-chief can stay connected with his commanders.” Naval Undersea Warfare Center awarded the contract. https://www.c4isrnet.com/battlefield-tech/it-networks/2020/12/02/raytheon-wins-pair-of-air-force-and-navy-it-contracts/

  • RTXs Raytheon completes first AN/TPY-2 radar for the Kingdom of Saudi Arabia

    September 29, 2024 | International, C4ISR

    RTXs Raytheon completes first AN/TPY-2 radar for the Kingdom of Saudi Arabia

    This is the first AN/TPY-2 radar with a complete Gallium Nitride, or GaN, populated array in the system

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