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Stennis Space Center

@NASAStennis • 131,507 subscribers

Official account of NASA’s John C. Stennis Space Center, America’s largest rocket engine test complex. Located in MS. Verification: https://t.co/4XgbG5Mq0D

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RS-25 engines powering the NASA_SLS (Space Launch System) rocket use liquid oxygen and liquid hydrogen as propellants – the same elements that combine to create water (H2O). For an RS-25 engine test, liquid hydrogen and liquid oxygen are mixed in the engine combustion chamber and ignited, which results in extremely high-temperature exhaust (up to 6,000 degrees F) exiting the nozzle into the flame deflector at a very high rate and pressure. Hundreds of thousands of gallons of water also are flowing into the flame deflector to cool the exhaust and protect the deflector. When the hot exhaust mixes with the water, it creates steam that rises into the atmosphere, forming a cloud that subsequently cools. Depending on the temperature and humidity at the time of the test, this cloud of steam may condense into water and fall in a very limited and localized area. The steam released during a test is water and does not pollute the atmosphere.

RS-25 engines powering the NASA_SLS (Space Launch System) rocket use liquid oxygen and liquid hydrogen as propellants – the same elements that combine to create water (H2O). For an RS-25 engine test, liquid hydrogen and liquid oxygen are mixed in the engine combustion chamber and ignited, which results in extremely high-temperature exhaust (up to 6,000 degrees F) exiting the nozzle into the flame deflector at a very high rate and pressure. Hundreds of thousands of gallons of water also are flowing into the flame deflector to cool the exhaust and protect the deflector. When the hot exhaust mixes with the water, it creates steam that rises into the atmosphere, forming a cloud that subsequently cools. Depending on the temperature and humidity at the time of the test, this cloud of steam may condense into water and fall in a very limited and localized area. The steam released during a test is water and does not pollute the atmosphere.

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The S-IC (or first) stage of the Saturn V rocket was powered by five F-1 engines, producing 7.5 million pounds of combined thrust. Twelve S-IC flight stages were tested on the B-2 side of the dual-position Thad Cochran (B-1/B-2) Test Stand at NASA’s Stennis Space Center from May 1967 to October 1970, including those carrying astronauts to the Moon during the Apollo Program. The B-2 side of the test stand now is being prepared to conduct Green Run testing of NASA's new Exploration Upper Stage for future NASAArtemis missions to the Moon.

The S-IC (or first) stage of the Saturn V rocket was powered by five F-1 engines, producing 7.5 million pounds of combined thrust. Twelve S-IC flight stages were tested on the B-2 side of the dual-position Thad Cochran (B-1/B-2) Test Stand at NASA’s Stennis Space Center from May 1967 to October 1970, including those carrying astronauts to the Moon during the Apollo Program. The B-2 side of the test stand now is being prepared to conduct Green Run testing of NASA's new Exploration Upper Stage for future NASAArtemis missions to the Moon.

Stennis Space Center

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Our water system keeps it cool, even when things are heating up. 🔥 During a hot fire test on the Fred Haise Test Stand, an RS-25 engine’s combustion chamber reaches as high as 6,000 degrees Fahrenheit. Its exhaust plume hits the test stand’s J-shaped flame deflector at around 5,000 degrees Fahrenheit and sends a cascade of shockwaves throughout the structure. The exhaust is cooled by high-pressure water sprayed into the test stand flame deflector through thousands of 5/32-inch nozzles. Without the 170,000 gallons of water pumped every minute from the nearby High Pressure Industrial Water Facility, the carbon-steel flame deflector could be damaged or even melt under the superhot exhaust plume. Over at the Thad Cochran (B-1/B-2) Test Stand, more than 32,500 5/32-inch nozzles in the flame deflector on the B-2 side of the stand direct more than 240,000 gallons of water a minute to cool engine exhaust during a test. For NASA_SLS core stage testing, another 92,000 gallons of water per minute was sprayed through 92 nozzles to provide vibro-acoustic suppression protection for the stage.

Our water system keeps it cool, even when things are heating up. 🔥 During a hot fire test on the Fred Haise Test Stand, an RS-25 engine’s combustion chamber reaches as high as 6,000 degrees Fahrenheit. Its exhaust plume hits the test stand’s J-shaped flame deflector at around 5,000 degrees Fahrenheit and sends a cascade of shockwaves throughout the structure. The exhaust is cooled by high-pressure water sprayed into the test stand flame deflector through thousands of 5/32-inch nozzles. Without the 170,000 gallons of water pumped every minute from the nearby High Pressure Industrial Water Facility, the carbon-steel flame deflector could be damaged or even melt under the superhot exhaust plume. Over at the Thad Cochran (B-1/B-2) Test Stand, more than 32,500 5/32-inch nozzles in the flame deflector on the B-2 side of the stand direct more than 240,000 gallons of water a minute to cool engine exhaust during a test. For NASA_SLS core stage testing, another 92,000 gallons of water per minute was sprayed through 92 nozzles to provide vibro-acoustic suppression protection for the stage.

Stennis Space Center

13,168 görüntüleme • 1 yıl önce

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