Decades-Old Security Vulnerabilities Found in Ubuntu's Needrestart Package

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  3 octobre 2018 | International, Aérospatial

  Lockheed Martin Reveals New Human Lunar Lander Concept

  DENVER, Oct. 3, 2018 /PRNewswire/ -- Today, at the International Astronautical Congress (IAC) in Bremen, Germany, Lockheed Martin (NYSE: LMT) experts revealed the company's crewed lunar lander concept and showed how the reusable lander aligns with NASA's lunar Gateway and future Mars missions. Concept video: https://vimeo.com/293133933 Lockheed Martin Crewed-Lunar-Lander The crewed lunar lander is a single stage, fully reusable system that incorporates flight-proven technologies and systems from NASA's Orion spacecraft. In its initial configuration, the lander would accommodate a crew of four and 2,000 lbs. of cargo payload on the surface for up to two weeks before returning to the Gateway without refueling on the surface. "NASA asked industry for innovative and new approaches to advance America's goal of returning humans to the Moon, and establishing a sustainable, enduring presence there," said Lisa Callahan, vice president and general manager of Commercial Civil Space at Lockheed Martin Space. "This is a concept that takes full advantage of both the Gateway and existing technologies to create a versatile, powerful lander that can be built quickly and affordably. This lander could be used to establish a surface base, deliver scientific or commercial cargo, and conduct extraordinary exploration of the Moon." The unique orbit of the lunar Gateway provides global lunar access for a lander. Having the ability to visit multiple sites with a reusable lander supports many international, commercial, and scientific communities, in addition to NASA's sustainable exploration of the Moon. After a surface mission, it would return to the Gateway, where it can be refueled, serviced, and then kept in orbit until the next surface sortie mission. "The Gateway is key to full, frequent and fast reusability of this lander," said Tim Cichan, space exploration architect at Lockheed Martin Space, who presented the lander concept at IAC. "Because this lander doesn't have to endure the punishment of re-entering Earth's atmosphere, it can be re-flown many times over without needing significant and costly refurbishment. That's a major advantage of the Gateway and of a modular, flexible, reusable approach to deep space exploration." The investments made in technology developed for Orion can be re-used to reduce the cost, complexity and development timeline. Some of the human-rated, flight-proven systems used in the design include avionics, life support, communications and navigation systems, and a light-weight version of its crew module pressure vessel. Reusable landers are enabled by the lunar Gateway and are important for sustainable exploration. Additionally, landed human lunar missions and a lunar orbiting outpost are valuable to prepare for sending humans to Mars. While the Moon doesn't have an atmosphere, there are still many lessons that apply to a future crewed Mars lander, such as: operations experience in a challenging and dynamic environment, operating and refueling out of orbit, long-duration cryogenic propulsion, and terminal descent navigation, guidance and control. To learn more about the Lockheed Martin's crewed reusable lunar lander concept, visit: Lander animation: https://vimeo.com/293133933 Lander illustrations: https://www.flickr.com/photos/lockheedmartin/albums/ 72157671935059557 Lander white paper: https://www.lockheedmartin.com/content/dam/lockheed-martin/space/documents/ahead/LM-Crewed-Lunar-Lander-from-Gateway-IAC-2018-Rev1.pdf About Lockheed Martin Headquartered in Bethesda, Maryland, Lockheed Martin is a global security and aerospace company that employs approximately 100,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. This year the company received three Edison Awards for ground-breaking innovations in autonomy, satellite technology and directed energy. SOURCE Lockheed Martin https://news.lockheedmartin.com/2018-10-03-Lockheed-Martin-Reveals-New-Human-Lunar-Lander-Concept

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  5 mai 2021 | International, Aérospatial

  British military aircraft must hit net-zero carbon target by 2040, says Air Force chief

  “That will require additional investment. It will require me diverting investment from equipment and platforms into infrastructure and into how we operate,” says Air Chief Marshal Mike Wigston.

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  7 septembre 2018 | International, Aérospatial, Naval, Terrestre, C4ISR

  No decision on S-400 as US, India sign key defense agreement

  By: Tara Copp NEW DELHI — The U.S. and India signed a critical defense information sharing agreement Wednesday that will allow each country greater access to each others' communications networks, but could not come to an agreement on India's planned purchase of Russia's S-400 air defense system. Mattis and Minister of Defense Nirmala Sitharaman signed the Communications Compatibility and Security Agreement, or COMCASA, which in practical terms will improve information network access and sharing so that in future weapons acquisition, secure communications links common in U.S. weapons systems, such as Link 16 in U.S. jets, can be included. Until now, those tactical communications capabilities have not been included in India's major weapons purchases. The two sides also agreed to enhanced defense cooperation, to include joint exercises on India's coast in 2019 and the establishment of a hotline between the U.S. and India. Mattis and Sitharaman then joined Secretary of State Mike Pompeo and India's minister of foreign affairs Sushma Swaraj to address Indian and U.S. media. The defense and diplomatic leaders said the agreements were the latest sign of a strengthened U.S.-India relationship, recently underscored through the U.S. renaming Pacific Command to Indo-Pacific Command. But the two sides did not come to a resolution on one of the higher-visibility issues between the two sides, India's planned purchase of five S-400 systems, in a deal worth an estimated $6 billion. Full article: https://www.militarytimes.com/news/your-military/2018/09/06/no-decision-on-s-400-as-us-india-sign-key-defense-agreement