• Satellite Evolution Group

SSTL kicks-off lunar pathfinder communications mission

SSTL kicks-off lunar pathfinder communications mission

Following the European Space Agency Ministerial Council Space19+ meeting in Seville at which the UK Space Agency confirmed it will invest £374 million per year with ESA, Surrey Satellite Technology Ltd (SSTL) is pleased to announce the kick-off for the implementation phase of its Lunar data-relay spacecraft, Lunar Pathfinder.

Phil Brownnett, SSTL’s Managing Director said “Lunar Pathfinder will be the first commercial service to address the need for data relay around the Moon, and will not only demonstrate an innovative business idea, but we fully expect it to also stimulate the emerging Lunar market. By pioneering a commercial solution and service delivery model in lunar orbit, SSTL and ESA are opening the door to providing services to the solar system, and contributing to the scientific progress of deep space exploration.”

The Lunar Pathfinder spacecraft is designed to provide affordable communications services to lunar missions via S-band and UHF links to lunar assets on the surface and in orbit around the Moon, and an X-band link to Earth. As early as Q4 2022, the 280 kg Lunar Pathfinder spacecraft will be a mission enabler for polar and far-side missions, which, without direct line of sight of the Earth, would otherwise have to procure their own communications relay spacecraft. Lunar Pathfinder is a more cost effective alternative to Direct-to-Earth solutions and a credible alternative to institutional deep-space ground stations, offering orbiters and near-side missions a better availability, enhanced safety and improved data-rate.

”The Moon is a cornerstone of ESA’s exploration strategy,” says David Parker, ESA’s director of human and robotic exploration, “this decade we will see humans and robots visit uncharted territory and return with new discoveries, communications is key to send scientific and operational data to Earth.”

“We are returning to the Moon with commercial and international partners, and the Lunar Pathfinder mission will be an integral part.”

To support booming demand from Lunar missions and a clear goal in the scientific community to undertake detailed study and analysis of the Aitken Basin, Lunar Pathfinder intends to operate in a stable elliptical orbit to provide long duration visibility of the Southern Lunar Hemisphere each day, with maximum opportunities for the transmission and reception of data between Earth and the lunar surface. NASA’s Artemis programme also calls for “landing the first American woman and next American man at the South Pole of the Moon by 2024, followed by a sustained presence on and around the Moon by 2028” and Lunar Pathfinder is accordingly working towards a launch in Q4 2022 to support early NASA missions.

In parallel to the Lunar Pathfinder mission SSTL has been working on future plans for a constellation of spacecraft around the Moon, capable of providing enhanced communications, as well as navigation services for the Lunar market as it grows from exploration to commercial exploitation and even tourism.

Acting both as technology and service demonstrator, Lunar Pathfinder is the opportunity for scientific and commercial mission developers to support the development, test and standardisation of Lunar communication infrastructure, and for emerging off-planet telcos to acquire experience of lunar asset operations and off-planet service delivery. Lunar Pathfinder is thus laying the foundation to support sustainable science and exploration for the next twenty years and beyond – bringing with it the possibility that when humans next set foot on the Moon we will be hearing not “Houston we’ve landed” but instead “Guildford…