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Scientists designed the deployment of three-body chain-type tethered satellites in low-eccentricity orbits using only tether
Model of 3-body chain-type tethered satellite system. Credit: Space: Science & Technology

Recently, the tethered satellite system (TSS) has been used in Earth observations, space interferometry and other space missions, due to its potential merits. The tethered TSAR (tomographic synthetic aperture radar) system is a group of tethered SAR satellites that can be rapidly deployed and provide a stable baseline for 3-dimensional topographic mapping and moving target detection.

Successful deployment is critical for TSAR tethered systems.

Several control methods, including length, length rate, tension, and thrust-aided control, have been proposed over the years. Among them, adjusting tension is a viable yet challenging approach due to the 's strong nonlinearity and underactuated traits.

Current tether deployment schemes focus on two-body TSS, with little emphasis on multi-TSSs. In a research article recently published in Space: Science & Technology, a research team led by Zhongjie Meng from Northwestern Polytechnical University has developed a new deployment strategy for a 3-body chain-type tethered satellite system in a low-eccentric elliptical orbit.

True blue: High-power propulsion for Gateway
Credit: NASA/Jef Janis

The blue hue of the Advanced Electric Propulsion System (AEPS) is seen inside a vacuum chamber at NASA's Glenn Research Center in Cleveland during recent thruster qualification testing. This 12-kilowatt Hall thruster is the most powerful electric propulsion thruster in production, and it will be critical to future science and exploration missions at the moon and beyond.

The blue plume is a steady stream of ionized xenon gas ejected to produce low, highly efficient thrust. These systems accelerate to extremely high speeds over time using only a fraction of the fuel chemical propulsion systems require, making electric propulsion an excellent choice for deep-space exploration and science missions.

Three AEPS thrusters will be mounted on the Power and Propulsion Element, a foundational component of Gateway. The small lunar space station is critical to the agency's Artemis missions that will help prepare for human missions to Mars. The Power and Propulsion Element will provide Gateway with power, high-rate communications, and allow it to maintain its unique orbit around the moon.

The AEPS thruster recently returned to NASA Glenn to continue qualification testing to certify the thrusters for flight.

Norway inaugurates satellite launch site

Thursday, 02 November 2023 16:55
space
Credit: Pixabay from Pexels

Norway on Thursday joined the race to launch satellites from the European continent by inaugurating a new spaceport on the island of Andoya, north of the Arctic Circle.

Isar Aerospace said the "Andoya Spaceport" was to "become the first operational orbital spaceport in continental Europe to finalize the construction of the launch site."

It was inaugurated at a ceremony attended by Norway's Crown Prince Haakon nine months after the inauguration of the Esrange in neighboring Sweden.

As tensions have grown with Russia, depriving Europe of access to its cosmodromes and launchpads, the site seeks to help European countries strengthen their own capacity for putting small and medium-sized satellites into orbit.

The launch base, which eventually will have several launch pads, was built by Norwegian public company Andoya Space, on a site which until now has only been used for firing suborbital scientific experiment rockets.

Spectrum, a two-stage craft capable of carrying up to one metric ton and developed by the German start-up Isar Aerospace, is scheduled to be the first to be launched from island which is located near the idyllic Lofoten archipelago.

Watch the Space Summit live

Thursday, 02 November 2023 16:24
Space Summit in Seville 2023

At the Space Summit on 6 November 2023, Ministers of ESA’s Member States will raise Europe’s ambition to drive forward space for a green future, take decisive steps in exploration, and ensure Europe’s access to space, while preparing a paradigm shift towards a more competitive next generation of launchers.

Earth Observation Commercialisation Forum

ESA’s first Earth Observation Commercialisation Forum took place at ESA Headquarters in Paris on 30–31 October 2023. The event saw investors, institutions, entrepreneurs and different-sized companies from the Earth observation sector come together to discuss the commercial potential and challenges of Earth observation. Revisit the event by watching the streaming replay.

Washington DC (UPI) Nov 1, 2023
NASA astronauts Jasmin Moghbeli and Loral O'Hara launched the space agency's fourth ever all-female spacewalk Wednesday, participating in science research and along with maintenance of the International Space Station. Moghbeli and O'Hara kicked off the six-hour spacewalk by exiting the Quest airlock to remove an electronics box called the Radio Frequency Group from the station's truss t
Nagoya, Japan (SPX) Oct 31, 2023
A study from an international team led by researchers from Nagoya University in Japan and the University of New Hampshire in the United States has revealed the importance of the Earth's upper atmosphere in determining how large geomagnetic storms develop. Their findings reveal the previously underestimated importance of the Earth's atmosphere. Understanding the factors that cause geomagnet
Los Angeles CA (SPX) Nov 01, 2023
Space Systems Command (SSC) has outlined 21 mission assignments as part of the Fiscal Year 2024 (FY24) National Security Space Launch (NSSL) Phase 2 Launch Service Procurement contract. Marking the final order year for Phase 2 of the contract, United Launch Alliance (ULA) and Space Exploration Technologies Corp. (SpaceX) have been awarded 11 and 10 missions, respectively. The missions, spanning

SpinLaunch announces new leadership roles

Thursday, 02 November 2023 11:00
Los Angeles CA (SPX) Nov 01, 2023
SpinLaunch, a pioneering space company enabling rapid and sustainable low-cost access to space, has announced major executive appointments that will provide the company with additional expertise in global investments, partnerships, commercialization, and go-to-market strategy. Aerospace pioneer and investor Domhnal Slattery has been elected Chairman of SpinLaunch's Board of Directors. In h

Lucy Ready for first Asteroid encounter

Thursday, 02 November 2023 11:00
Pasadena CA (JPL) Nov 01, 2023
NASA's Lucy spacecraft is on track for its first asteroid encounter on Nov. 1. Lucy's optical navigation team has confirmed that the latest trajectory correction maneuver on Sept 29 accurately set the spacecraft on course for its flyby of the small main belt asteroid Dinkinesh. The spacecraft is anticipated to pass approximately 265 miles (425 km) from the asteroid at 12:54 p.m. EDT. On Oc
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