[Fire 1:56:47]NASA's SLS Rocket Static fire test | Hot fire engine test for the Artemis moon mission

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Watch NASA and Boeing conduct a static fire or a hot fire test of the SLS (Space Launch System) Rocket that will eventually take humans to the moons with NASA's Artemis mission.

One step closer to Artemis missions to the Moon 🚀 We are targeting a two-hour test window that opens at 5 p.m. EST on Sat., Jan. 16 for the hot fire test of the Space Launch System (SLS) rocket core stage at our Stennis Space Center. The hot fire is the eighth and final test of the Green Run series, to ensure the core stage of the SLS is ready to launch #Artemis missions to the Moon. This will be the first time that all four RS-25 engines will be fired at once in order to simulate a launch, generating 1.6 million pounds of thrust.

Live coverage begins at 4:20 p.m. EST.

NASA’s Space Launch System (SLS) program and Core Stage prime contractor Boeing are finally ready for the big moment of the rocket’s Green Run campaign and the biggest moment in the 10-year old program, a static firing of the stage. After a year of test cases at the Stennis Space Center in Mississippi, visits from hurricanes, and waves of the COVID-19 pandemic, an eight-minute long, flight-duration Hot-Fire test planned for January 16 hopes to demonstrate the readiness of the new rocket stage for its first launch.

Four veteran Space Shuttle Main Engines (SSME), now equipped with upgraded computers and adapted to meet SLS performance requirements, are supporting actors in this crucial test of the rookie stage. The Hot-Fire test is planned as a full flight duty cycle to demonstrate the real-world performance of the large, complicated rocket; the renamed Aerojet Rocketdyne RS-25 engines will be put through a set of circular and sinusoidal gimbaling experiments that will help demonstrate operating margins predicted by analytical models.

The Space Launch System (SLS) is an American Space Shuttle-derived super heavy-lift expendable launch vehicle, which has been under development by NASA in the United States since its announcement in 2011. It will be the primary launch vehicle of NASA's deep space exploration plans including the planned crewed lunar flights of the Artemis program and a possible follow-on human mission to Mars.

The SLS is a Space Shuttle-derived launch vehicle, with the first stage of the rocket being powered by one central core stage and two outboard boosters. The upper stage is being developed from the Block 1 variant to a Block 2 variant, the Exploration Upper Stage.

Core stage
The Space Launch System's core stage contains the Main Propulsion System (MPS) of the rocket. It is 65 metres (212 ft) long by 8.4 metres (27.6 ft) in diameter and fuels the four RS-25 rocket engines at its base. The core stage is structurally and visually similar to the Space Shuttle external tank,] containing the liquid hydrogen fuel and liquid oxygen oxidizer. Initial flights are planned to use modified RS-25D engines left over from the Space Shuttle program. However, Space Shuttle main engines are reusable, so later flights are planned to switch to a different version of the engine not designed for reuse, as it will be cheaper.

Blocks 1 and 1B of the SLS are planned to use two five-segment Solid Rocket Boosters (SRBs). These new SRBs are derived from the four-segment Space Shuttle Solid Rocket Boosters, with the addition of a center booster segment, new avionics, and lighter insulation. The five-segment SRBs provide approximately 25% more total impulse than the Shuttle SRB, but will no longer be recovered after use.

The Interim Cryogenic Propulsion Stage (ICPS) is planned to fly on Artemis 1. It is a stretched and human rated Delta IV 5 metres (16 ft) Delta Cryogenic Second Stage (DCSS) powered by a single RL10B-2. Block 1 is intended to be capable of lifting 95 tonnes to LEO in this configuration if the ICPS is considered part of the payload. Artemis 1 is to be launched into an initial 1,800 by −93 kilometres (1,118 by −58 mi) suborbital trajectory to ensure safe disposal of the core stage. ICPS will then perform an orbital insertion burn at apogee and a subsequent translunar injection burn to send Orion towards the moon. The ICPS for Artemis 1 was delivered by ULA to NASA about July 2017,and was housed at Kennedy Space Centre as of November 2018. As of February 2020, ICPS (not EUS) is planned for Artemis 1, 2, and 3. ICPS will now be human-rated for the crewed Artemis-2 flight.

The Exploration Upper Stage (EUS) is planned to fly on Artemis 4. Similar to the S-IVB, the EUS will complete the SLS ascent phase and then re-ignite to send its payload to destinations beyond low-Earth orbit. It is expected to be used by Block 1B and Block 2, share the core stage diameter of 8.4 meters, and be powered by four RL10 engines.
#NASA #SLS #Artemis