Houston-based TRISH's research will be done aboard the Polaris Dawn by its crew, which includes, from left to right, Mission Specialist and Medical Officer Anna Menon, Mission Pilot Scott “Kidd” Poteet, Mission Commander Jared “Rook” Isaacman, Mission Specialist Sarah Gillis. Photo courtesy Polaris Program/John Kraus

The Translational Research Institute for Space Health at Baylor College of Medicine, or TRISH, announced this month that it will perform research experiments aboard SpaceX's upcoming Polaris Dawn mission that will look into everything from human vision to motion sickness to radiation levels while in space.

The research aboard Polaris Dawn will complement research supported by TRISH on the Inspiration4 all-civilian mission to orbit, which was also operated by SpaceX in 2021.

“The Institute’s mission is to help humans thrive in deep space,” Dr. Dorit Donoviel, TRISH executive director and associate professor for the Center for Space Medicine at Baylor, said in a statement. “We are grateful to our commercial space exploration partners, and in particular, the Polaris Program, who recognize how important it is to carry out and support health research in their missions, as a route to improving health for all humans in space and on Earth.”

Polaris Dawn is slated to launch from NASA’s Kennedy Space Center in Florida no earlier than March 2023. It is part of SpaceX's Polaris Program, which proposes three space missions. The first mission aims to reach the highest Earth orbit ever flown.

Four crew members will be onboard SpaceX’s Falcon 9 rocket for the Polaris Dawn mission. TRISH's experiments are part of 38 experiments from institutions that will be conducted on board at high-altitude Earth orbit.

The experiments are supported by federal funding from TRISH's cooperative agreement with NASA, as well as a donation from the Polaris Program.

According to a statement from TRISH, the experiments will include the following:

  • Collecting data related to the vision condition Spaceflight Associated Neuro-Ocular Syndrome (SANS), which is a top risk to human health in long-duration spaceflight
  • Quantifying alterations in body composition and fluid distribution during exposure to weightlessness
  • Directly measuring intracranial pressure changes to quantify the effects of weightlessness on the brain
  • Measuring cognitive performance, which reflects fitness for duty
  • Collecting biometric data to track physiologic changes, which could inform on changes in overall health
  • Using miniaturized, intelligent ultrasound to train the astronauts to scan themselves and deliver medical quality images
  • Testing ways to predict space motion sickness to improve crew safety and in-mission performance
  • Collecting data on the radiation environment to observe how space radiation may affect human systems
  • Providing biological samples for multi-omics analyses and storage in a long-term biobank to be available to researchers in the future

TRISH launched the first-ever commercial spaceflight medical research program in 2021, known as the Expand—Enhancing Exploration Platforms and Analog Definition—Program. Future findings from the Polaris Dawn mission will be added to the database, which compiles in-flight health data from multiple spaceflights.

TRISH was founded in 2016 with the mission of addressing the most pressing health risks and challenges associated with human deep space exploration.

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2 Houston space tech cos. celebrate major tech milestones

big wins

Two Houston aerospace companies — Intuitive Machines and Venus Aerospace — have reached testing milestones for equipment they’re developing.

Intuitive Machines recently completed the first round of “human in the loop” testing for its Moon RACER (Reusable Autonomous Crewed Exploration Rover) lunar terrain vehicle. The company conducted the test at NASA’s Johnson Space Center.

RACER is one of three lunar terrain vehicles being considered by NASA for the space agency’s Artemis initiative, which will send astronauts to the moon.

NASA says human-in-the-loop testing can reveal design flaws and technical problems, and can lead to cost-efficient improvements. In addition, it can elevate the design process from 2D to 3D modeling.

Intuitive Machines says the testing “proved invaluable.” NASA astronauts served as test subjects who provided feedback about the Moon RACER’s functionality.

The Moon RACER, featuring a rechargeable electric battery and a robotic arm, will be able to accommodate two astronauts and more than 880 pounds of cargo. It’s being designed to pull a trailer loaded with more than 1,760 pounds of cargo.

Another Houston company, Venus Aerospace, recently achieved ignition of its VDR2 rocket engine. The engine, being developed in tandem with Ohio-based Velontra — which aims to produce hypersonic planes — combines the functions of a rotating detonation rocket engine with those of a ramjet.

A rotating detonation rocket engine, which isn’t equipped with moving parts, rapidly burns fuel via a supersonic detonation wave, according to the Air Force Research Laboratory. In turn, the engine delivers high performance in a small volume, the lab says. This savings in volume can offer range, speed, and affordability benefits compared with ramjets, rockets, and gas turbines.

A ramjet is a type of “air breathing” jet engine that does not include a rotary engine, according to the SKYbrary electronic database. Instead, it uses the forward motion of the engine to compress incoming air.

A ramjet can’t function at zero airspeed, so it can’t power an aircraft during all phases of flight, according to SKYbrary. Therefore, it must be paired with another kind of propulsion, such as a rotating detonation rocket engine, to enable acceleration at a speed where the ramjet can produce thrust.

“With this successful test and ignition, Venus Aerospace has demonstrated the exceptional ability to start a [ramjet] at takeoff speed, which is revolutionary,” the company says.

Venus Aerospace plans further testing of its engine in 2025.

Venus Aerospace, recently achieved ignition of its VDR2 rocket engine. Photo courtesy of Venus Aerospace

METRO rolls out electric shuttles for downtown Houston commuters

on a roll

The innovative METRO microtransit program will be expanding to the downtown area, the Metropolitan Transit Authority of Harris County announced on Monday.

“Microtransit is a proven solution to get more people where they need to go safely and efficiently,” Houston Mayor John Whitmire said in a statement. “Connected communities are safer communities, and bringing microtransit to Houston builds on my promise for smart, fiscally-sound infrastructure growth.”

The program started in June 2023 when the city’s nonprofit Evolve Houston partnered with the for-profit Ryde company to offer free shuttle service to residents of Second and Third Ward. The shuttles are all-electric and take riders to bus stops, medical buildings, and grocery stores. Essentially, it works as a traditional ride-share service but focuses on multiple passengers in areas where bus access may involve hazards or other obstacles. Riders access the system through the Ride Circuit app.

So far, the microtransit system has made a positive impact in the wards according to METRO. This has led to the current expansion into the downtown area. The system is not designed to replace the standard bus service, but to help riders navigate to it through areas where bus service is more difficult.

“Integrating microtransit into METRO’s public transit system demonstrates a commitment to finding innovative solutions that meet our customers where they are,” said METRO Board Chair Elizabeth Gonzalez Brock. “This on-demand service provides a flexible, easier way to reach METRO buses and rail lines and will grow ridership by solving the first- and last-mile challenges that have hindered people’s ability to choose METRO.”

The City of Houston approved a renewal of the microtransit program in July, authorizing Evolve Houston to spend $1.3 million on it. Some, like council member Letitia Plummer, have questioned whether microtransit is really the future for METRO as the service cuts lines such as the University Corridor.

However, the microtransit system serves clear and longstanding needs in Houston. Getting to and from bus stops in the city with its long blocks, spread-out communities, and fickle pedestrian ways can be difficult, especially for poor or disabled riders. While the bus and rail work fine for longer distances, shorter ones can be underserved.

Even in places like downtown where stops are plentiful, movement between them can still involve walks of a mile or more, and may not serve for short trips.

“Our microtransit service is a game-changer for connecting people, and we are thrilled to launch it in downtown Houston,” said Evolve executive director Casey Brown. “The all-electric, on-demand service complements METRO’s existing fixed-route systems while offering a new solution for short trips. This launch marks an important milestone for our service, and we look forward to introducing additional zones in the new year — improving access to public transit and local destinations.”

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This article originally ran on CultureMap.