Lockheed Martin SR-72 have the same range, with entry into service by 2030. The SR-72 follows the US Air Force's hypersonic road map for developing a hypersonic strike weapon by 2020, and a penetrating ISR aircraft by 2030. At the time of the concept's unveiling, Lockheed Martin had engaged in talks with government officials, but has not secured funding for the demonstrator or engine. On 13 November 2013, Air Force Chief of Staff General Mark Welsh revealed that the service was interested in the SR-72's hypersonic capabilities, but had not spoken with Lockheed Martin about the aircraft. Its high speed appeals to the
Lockheed Martin Lunar Lander are a variant of the RL10 that uses the bi-propellant liquid oxygen / liquid hydrogen, generating an estimated impulse (delta-v) of 5 km/s. Lockheed Martin Lunar Lander The Lockheed Martin Lunar Lander (or Mars-Precursor Lunar Lander) is a design concept by Lockheed Martin of a reusable crewed lunar lander that could take astronauts from the Lunar Orbital Platform-Gateway —a proposed habitat that NASA plans to build in orbit around the Moon— to the lunar surface and advance technology needed to explore Mars. The reusable lander would enable sustainable lunar surface exploration. The design concept was unveiled in October 2018, and