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Category: satellites – Page 141

Space in uncertain times

Last month, even as the coronavirus epidemic was ravaging China and making inroads in other nations, the space industry’s concerns were elsewhere. There were debates about a NASA authorization bill in the House that would reshape NASA’s Artemis program even as the agency sought more money for it, the ongoing review into the flawed test flight of Boeing’s CST-100 Starliner commercial crew vehicle, renewed concerns about orbital debris after a close call between two defunct satellites, and discussions about the viability and sustainability of satellite constellations like OneWeb and SpaceX’s Starlink as both moved into full-scale deployment.

Those were the days. In the last couple of weeks, and especially in the last week, those issues have largely disappeared as what is now a pandemic takes hold in the United States and many other nations. But while many parts of the economy have ground to a halt, like retail and tourism, the effects on the space industry have been uneven. Some parts of it have also effectively halted, yet others continue ahead at essentially full speed—at least for now.

The first clear signs of the effects of the pandemic on the industry was bringing the circuit of conferences and other events to a standstill. On March 9, the Satellite 2020 conference got underway in Washington despite growing concerns about the spread of the coronavirus disease COVID-19, including the first cases diagnosed in the city. Conference organizers plowed ahead even as some major companies, like satellite operator SES, bowed out, saying only about 10 percent of attendees as 12 percent of exhibitors had cancelled their plans.

DARPA is Building a Robotic Space Mechanic to Fix Satellites in Orbit

DARPA, the Defense Advanced Research Projects Agency that’s responsible for developing emerging technologies for the U.S. military, is building a new high-tech spacecraft — and it’s armed. In an age of Space Force and burgeoning threats like hunter-killer satellites, this might not sound too surprising. But you’re misunderstanding. DARPA’s new spacecraft, currently “in the thick of it” when it comes to development, is armed. As in, it has arms. Like the ones you use for grabbing things.

Armed robots aren’t new. Mechanical robot arms are increasingly widespread here on Earth. Robot arms have been used to carry out complex surgery and flip burgers. Attached to undersea exploration vehicles, they’ve been used to probe submerged wrecks. They’ve been used to open doors, defuse bombs, and decommission nuclear power plants. They’re pretty darn versatile. But space is another matter entirely.

Space startup Lynk uses satellite to send text message to unmodified Android phone

An aerospace startup that plans to launch thousands of satellite “cell towers” into space says it has successfully sent a text message to a common Android smartphone using one of its satellites in orbit. The company claims it’s the first time a text message has ever been sent to an unmodified mobile phone from space, and it demonstrates the technology needed to provide global cellphone connectivity from orbit.

The company behind the breakthrough space text is called Lynk, which used to go by the name UbiquitiLink. Lynk is one of several space companies at the moment planning on building a constellation of thousands of satellites to provide some kind of connectivity to individuals on the ground. But rather than provide broadband internet coverage, Lynk is focused on providing cell service for the average mobile phone with its satellites, without the need for customers to provide any extra hardware.

These space surveillance satellites just got an upgrade

According to SOPS, this was one of the most significant upgrades to the system since it became operational in 2015. The ground system upgrade will also be important as the Space Force expands the constellation later this year, said 1st SOPS engineer Capt. Zachary Funke.

The first two satellites in the constellation launched in 2014, with two more satellites joining them on orbit in 2016. The Space Force is slated to launch the fifth and sixth GSSAP satellites in the fourth quarter of 2020 aboard an Atlas V rocket.

Operating near the geosynchronous belt, the four GSSAP satellites can provide data on other man-made objects in space without being interrupted by the weather or atmospheric conditions that impact ground-based space situational awareness systems. GSSAP satellites can also perform rendezvous and proximity operations, approaching other space vehicles to provide attribution or enhanced surveillance on objects of interest to United States Space Command.

SpaceX readying for Sunday’s sixth Starlink launch, first fifth booster flight

SpaceX is preparing its Falcon 9 to launch the Starlink V1.0 L5 mission, although the launch date has been moved to Sunday. This mission will be the first Starlink launch from LC-39A at Kennedy Space Center, and the first from the pad since the Crew Dragon In-Flight Abort Test in January 2020. The first stage is B1048.5 – marking the first time a Falcon 9 core flies for the fifth time. The launch is now scheduled for 9:22 AM Eastern on March 15.

Lead Image by Mike Deep Starlink launch:

This mission will launch the 5th batch of 60 fully-operational Starlink satellites – the sixth batch overall – to a Low Earth Orbit (LEO). This will also be the first Starlink launch from the historic Launch Complex 39A (LC-39A) at Kennedy Space Center. Previous Starlink missions launched from Space Launch Complex 40 (SLC-40), just over three miles south of LC-39A.

New Antenna Will Boost UAV Communication with Satellites

A group of Chinese researchers has developed a compact, sabre-like antenna for unmanned aerial vehicles (UAVs) that can switch between two radiation patterns for better communication coverage. They describe their work in a study published 26 February in IEEE Transactions on Antennas and Propagation.

For UAVs cruising at high speeds, it’s desirable to have small, aerodynamic antennas that limit drag but can still yield sufficient bandwidth and coverage. Zhijun Zhang, a researcher at Tsinghua University, notes that sabre-shaped antennas are beneficial in the sense that they are very aerodynamic—but there is a major limitation that comes with this design.

“Conventional sabre-like antennas generate a donut-shape radiation pattern, which provides an omnidirectional coverage and is ideal for air-to-ground communication. However, a donut-shape pattern has a null at its zenith,” Zhang explains.

Satellite operators hint at fear of SpaceX, Blue Origin becoming competitors

WASHINGTON — Two of the world’s largest geostationary satellite fleet operators said March 10 that launch providers who compete with them by deploying their own constellations could influence their choice of rockets.

Executives from SES and Eutelsat at the Satellite 2020 conference here said they are watching as SpaceX deploys its own Starlink constellation of broadband satellites, which could make SpaceX one of their competitors.

Blue Origin could also become a competitor if it launches Amazon’s Kuiper broadband constellation, according to Eutelsat Deputy CEO Michel Azibert and Hughes President Pradman Kaul, since Jeff Bezos owns both Amazon and Blue Origin.

DARPA teams with Northrop Grumman to build robotic service satellite

DARPA has entered into a partnership with Northrop Grumman subsidiary Space Logistics LLC to develop robotic technologies for servicing and extending the service lives of orbital satellites. Based on the Mission Extension Vehicle-1 (MEV-1), which recently docked with a communication satellite in geosynchronous orbit, the technology will be used by the agency’s Robotic Servicing of Geosynchronous Satellites (RSGS) program to develop a dexterous robotic servicer that would be operated by private companies.

Founded in 2016, the RSGS program completed a Payload Critical Design Review in 2019 and is developing key technologies in the run up to the first space launch scheduled for 2023. As part of this effort, DARPA says it is funding the US Naval Research Laboratory (NRL) to bring together components like the robotic manipulator arms, a variety of interchangeable tools, cameras, sensors, software, and avionics into a functioning robotic payload.

Meanwhile, Space Logistics will provide the spacecraft bus based on the MEV and integrate the robotic payload, as well as providing launch and orbital operation services. Once the spacecraft has been checked out and demonstrated its capabilities, the technology will be marketed to commercial and government organizations.

Kepler’s decision to build its own cubesats surprises manufacturers

That’s no longer the case. Blue Canyon Technologies, AAC Clyde Space, GomSpace, NanoAvionics, Tyvak and several others are ready and willing to build cubesats en masse. So it came as a surprise to many cubesat manufacturers when Kepler Communications announced plans in January to manufacture its constellation of 140 Internet of Things satellites in-house.

Kepler is poised to become one of the world’s largest cubesat operators once its constellation is fully in orbit, a target set for the end of 2022. Only Planet currently operates a fleet that large.

Instead of formally soliciting bids from a wide range of cubesat builders, though, Toronto-based Kepler turned to the University of Toronto Institute for Aerospace Space Flight Laboratory (SFL) for help setting up its own manufacturing line. Kepler also received 1 million Canadian dollars ($760,000) from the Canadian Space Agency to mature its bus design and production techniques, leading some observers to conclude national pride could play a role. Through Kepler, Canada is establishing a robust cubesat manufacturing capability.