NASA Awards Turbofan Engine Core Technology Demonstration Contract

NASA has selected GE Aerospace of Cincinnati to work with the agency’s Hybrid Thermally Efficient Core (HyTEC) project, which is aiming to develop more fuel efficient engines for single-aisle aircraft.

The HyTEC’s Phase 2 Integrated Core Technology Demonstration is a cost-sharing contract with a maximum value of approximately $68.1 million and a five-year performance period that begins Feb. 15. The contract is awarded with a 50% minimum GE Aerospace cost share during the contract period.

Part of NASA’s Advanced Air Vehicles program, HyTEC was established to accelerate the development of turbofan engine small core technologies. The first phase of the project focused on developing several key engine core technologies, including high-pressure compressors, high-pressure turbines, advanced materials, electric hybridization, and compact combustors, through subsystem or component tests. To meet the goal of HyTEC Phase 2, GE Aerospace will integrate these technologies into an engine core to perform a compact, high-power density core ground demonstration by the end of September 2028.

HyTEC Phase 2 is a major demonstration within NASA’s Sustainable Flight National Partnership portfolio that will contribute to our nation’s goal of net-zero greenhouse gas emissions by 2050.

For information about NASA and other agency programs, visit:

https://www.nasa.gov

-end-

Roxana Bardan
Headquarters, Washington
202-358-1600
roxana.bardan@nasa.gov

Brian Newbacher
Glenn Research Center, Cleveland
216-433-5644
brian.t.newbacher@nasa.gov

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Roxana Bardan

Inventor of Air Conditioning Helped Chill NASA Wind Tunnels

Global tensions were high in the fall of 1941 as U-boats harassed ships in the Atlantic and German forces pushed deep into the Soviet Union. There was a critical need for the United States to get the National Advisory Committee for Aeronautics (NACA)’s new engine laboratory (today, NASA’s Glenn Research Center) in operation as soon as possible. It was especially important to complete its Altitude Wind Tunnel (AWT), which could be used to improve the engine performance of high-altitude combat aircraft.

NACA engineers were experts in wind tunnel design, but simulating 30,000-foot altitudes to test full-sized engines in the new facility posed several unique challenges. Perhaps the most daunting was chilling the millions of cubic feet of airflow in the tunnel to -47 degrees Fahrenheit. The NACA’s attempts to design adequate cooling coils for the unprecedented system proved ineffectual. To expedite the design process, the NACA convinced Willis Carrier, the nation’s premier refrigeration authority, to design the cooling system for the massive tunnel.

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In October 1941, Vannevar Bush, a special liaison between President Franklin D. Roosevelt and the scientific community, set up a meeting between NACA leaders and Carrier, who had invented the world’s first electrical air conditioning unit in 1902. Although Carrier felt that his company was too busy with other military-related projects to bid on the tunnel project, he agreed to meet with those directly involved with the effort on Nov. 6, 1941. The NACA team only discussed the system in broad terms but stressed the importance of the tunnel to national interests.

In the end, Carrier agreed to perform some initial experiments and bid on the project. The NACA was so impressed by Carrier’s confidence and technical acumen that in early 1942 it planned to build a second tunnel, the Icing Research Tunnel, using the AWT’s proposed refrigeration system.

The Carrier Corporation officially began the project in March 1942 as the first tunnel’s foundations were laid in Cleveland. Carrier formed several teams to work on different aspects of the system and built a model of the AWT to test the concepts. They regularly worked 16-hour days to meet the design deadline. As one engineer stated, “Every assignment had to be done yesterday.”

Several new tactics were employed to meet the unique demands of the effort. Engineers designed many of the compressor valves and pumps specifically for the project and decided to use Freon-12, which had never been used on such a large scale, as the refrigerant. The most significant challenge was fitting the required 8,000 square feet of cooling coils into the 2,000-square-foot tunnel section. The solution was to arrange the coils in an accordion-like fashion and add turning vanes across the back to maintain the airflow’s velocity and pressure.

The AWT’s cooling system was installed over the summer of 1943. Carrier and his team were present during the trial runs, and the tunnel began formal operation in February 1944. Its unique ability to test full-scale engines in simulated altitude conditions helped resolve engine cooling issues for the B-29 bomber during World War II and significantly advanced the development of the jet engine in the 1940s and 1950s. NASA converted the tunnel into a vacuum facility in 1963 and eventually shut it down in the 1970s.

The IRT, which came online in late summer 1944, creates freezing clouds to study ice buildup on aircraft components and test de-icing systems. Today, the IRT is the longest running – and among the largest –icing tunnel in the world.

In 1987, the American Society of Mechanical Engineers named the IRT an International Historic Engineering Landmark and noted, “there was never a more difficult, more exacting, or more vital refrigerating system than the one designed and built by the Carrier Corporation for the wind tunnels in Cleveland.”

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Robert S. Arrighi

NASA: Let’s Ketchup on International Space Station Tomato Research

Growing food aboard the International Space Station is one of the many research investigations ripe for long duration spaceflight missions to the Moon and Mars.

NASA astronaut Frank Rubio recently shared the saucy story of two rogue tomatoes, which he had accidentally lost track of while harvesting for the eXposed Root On-Orbit Test System (XROOTS) experiment he conducted aboard the space station in 2022. The experiment uses hydroponic and aeroponic techniques to grow plants without soil or other growth media and could provide suitable solutions for plant systems needed for future space exploration missions.

While celebrating the space station’s 25th anniversary of operations, Expedition 70 crew members revealed they found the lost tomatoes, joking that Rubio did not eat the tomatoes as they suspected. Despite being nearly a year after the initial disappearance of the tomatoes, the fruit was found in a plastic bag dehydrated and slightly squished. Other than some discoloration, it had no visible microbial or fungal growth.

During his U.S. record-breaking 371-day stay aboard station, Rubio also conducted another a-peeling experiment for the VEG-05 study, which helps address the need for a continuous fresh-food production system in space. This experiment used the space station’s Veggie facility to grow dwarf tomatoes focusing on the impact of light quality and fertilizer on fruit production, microbial food safety, nutritional value, and taste acceptability by the crew.

While the rogue tomatoes found from the XROOTS experiment will not be returning to Earth for analysis as they were discarded, plant research aboard space station continues with Plant Habitat-03, returning to Earth during the upcoming splashdown of SpaceX’s 29th commercial resupply mission. Plant Habitat-03 is one of the first multi-generational plant studies aboard the space station which could help researchers assess whether genetic adaptations in one generation of plants grown in space can transfer to the next. Results from this study could help identify genetic elements that increase the adaptability of plants to spaceflight providing insight into how to grow repeated generations of crops to provide food and other services on future space missions.

The benefits of growing plants in space don’t stop there, astronauts report there are psychological benefits to time spent gardening, increasing their quality of life in space, and boosting their morale. Research aboard the space station is advancing the technology and scientific knowledge needed to successfully grow plants in space and help humans push the boundaries of space travel. This work also helps efforts to improve plants grown for food and other important uses here on Earth.

Read more about plant research on the space station: Station Science 101: Plant Research – NASA.

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Christine Giraldo