Connect with us

Aerospace

SLS core stage ready for Green Run test firing

Avatar

Published

on

WASHINGTON — NASA officials expressed confidence that a key test of the Space Launch System scheduled for Jan. 16 will go well, keeping open the chances that the vehicle will make its long-delayed debut before the end of the year.

NASA has scheduled a full-duration static-fire test of the SLS core stage at the Stennis Space Center for Jan. 16. Ignition is planned for 5 p.m. Eastern, with the engines firing for 485 seconds.

The test will be the culmination of the Green Run test campaign for the SLS core stage, which started almost exactly a year ago when the stage was installed on a test stand at Stennis. That series of tests included, most recently, a “wet dress rehearsal” Dec. 20 where the tank was loaded with liquid oxygen and liquid hydrogen propellants and went through a practice countdown.

That test, agency officials said at a Jan. 12 briefing, went well, with no signs of leaks or other major issues. “As a result of all the wet dress rehearsal testing, we really gained a lot of confidence in the hardware and in our ground support systems,” said Julie Bassler, SLS stages manager at NASA’s Marshall Space Flight Center.

That test was not perfect, though. The countdown stopped a few minutes before the scheduled end because of a timing problem with a valve. John Shannon, vice president and SLS program manager at Boeing, the prime contractor for the vehicle, said a liquid hydrogen fill-and-drain valve closed 0.2 seconds later than expected, halting the test. The issue was that helium used in the pneumatically actuated valve was colder than expected.

Shannon said they decided to adjust the timing to account for any such lags in the future. “We don’t have to be quite that precise and cut it quite that close, so we expanded the timer out so we’ve got sufficient margin,” he said.

The Dec. 20 test was the second attempt at the wet dress rehearsal. A test Dec. 7 stopped while still in its early phases because liquid oxygen flowing into the stage was warmer than expected. NASA attributed that problem to issues with ground systems, and not the SLS itself.

After that earlier test, NASA managers warned there was “very little margin” left in the schedule for a November 2021 launch of the SLS on the Artemis 1 mission, a point they reiterated at the briefing. If the hotfire test goes as planned on Jan. 16, the stage is scheduled to ship to the Kennedy Space Center in February to be integrated with its solid rocket boosters and upper stage, as well as the Orion spacecraft that will be launched on that uncrewed mission.

“Our team is locked in and focused on delivering the rocket for a 2021 launch. We’re continuing to look for opportunities to do things concurrently and improve our schedule,” John Honeycutt, SLS program manager at NASA, said.

Anticipating a successful test, workers at KSC have started stacking segments of the solid rocket boosters, a process that traditionally required the boosters to launch within 12 months. “It’s an opportunity for us to do some risk mitigation” regarding the stacking process, he said. He added they are collecting data about the boosters “to give us the best opportunity to do some sort of a life extension on the booster stacking in the event that we need that.”

Those plans, though, depend on getting through the Green Run successfully. “The reason we test is to learn, and from my perspective and the team’s perspective, we don’t want to do anything that puts the vehicle at risk,” Honeycutt said.

A successful test need not las the full 485 seconds. The key elements of the test are in the first few minutes, said Jeff Zotti, Aerojet Rocketdyne program director for the RS-25 engines that power the core stage. The four engines will ignite one at a time at intervals of 120 milliseconds and then power up to 109% of rated thrust. The engines will remain at that level for 90 seconds, then throttle back to 95% to simulate passing through maximum dynamic pressure, or Max Q, during ascent. After about a minute the engines will throttle back up to 109%.

“If we had an early shutdown for whatever reason, we get all of the engineering data that we need to have high confidence in the vehicle at about 250 seconds,” Shannon said, which includes both the engine throttling as well as some gimbaling of the nozzles. “But we’re going to go ahead and put it through the entire flight profile as long as everything is looking OK.”

Source: https://spacenews.com/sls-core-stage-ready-for-green-run-test-firing/

Aerospace

ÉireComposites to create satellite optical instrument for ESA

Avatar

Published

on

ÉireComposites has announced an agreement with the Belgian company, OIP Sensor Systems to design and produce stray light baffles, which will form part of the European Space Agency’s ALTIUS satellite.

The baffles will be the first external part and largest functioning piece of equipment ever to be manufactured in Ireland and launched into space.

The stray light baffles will prevent out-of-field stray light from reaching the lenses of the satellite’s optical instruments; instead, a system with periscope mirrors will be used to align the light. Stray light baffles rely upon highly controlled and precise manufacturing and finishing. ÉireComposites will manufacture the three baffles that will be attached to the side of the satellite to assist with the mission objective.

OIP forms part of a consortium that signed the contract with the European Space Agency to build this satellite which is expected to be launched by end of 2023 from French Guiana. The mission will deliver profiles of the stratospheric ozone, as well as profiles of other atmospheric trace gases. This will provide scientific understanding on how the rise in greenhouse gases affects the atmosphere.

Tomás Flanagan, ÉireComposites CEO said: “The ALTIUS satellite will signal a major milestone for Irish participation in space exploration as the three stray light baffles will become the first optical instruments manufactured in Ireland and the largest satellite parts manufactured in this country. This is a massive achievement for the company and I hope this will be the first of many parts we manufacture for space exploration missions.”

“The ALTIUS mission will play a substantial role in how we look at climate change and the impact it has on Earth. The mission will allow for long-term monitoring and scientific study of the protective ozone layer which covers Earth and inform decisions around climate change. I am excited that we will be part of this research and I would like to take the opportunity to commend the team here in Inverin that have contributed to our success in obtaining this contract.”

www.eircomposites.com

The post ÉireComposites to create satellite optical instrument for ESA appeared first on Aerospace Manufacturing.

Checkout PrimeXBT
Trade with the Official CFD Partners of AC Milan
Source: https://www.aero-mag.com/eirecomposites-to-create-satellite-optical-instrument-for-esa/

Continue Reading

Aerospace

ÉireComposites to create satellite optical instrument for ESA

Avatar

Published

on

ÉireComposites has announced an agreement with the Belgian company, OIP Sensor Systems to design and produce stray light baffles, which will form part of the European Space Agency’s ALTIUS satellite.

The baffles will be the first external part and largest functioning piece of equipment ever to be manufactured in Ireland and launched into space.

The stray light baffles will prevent out-of-field stray light from reaching the lenses of the satellite’s optical instruments; instead, a system with periscope mirrors will be used to align the light. Stray light baffles rely upon highly controlled and precise manufacturing and finishing. ÉireComposites will manufacture the three baffles that will be attached to the side of the satellite to assist with the mission objective.

OIP forms part of a consortium that signed the contract with the European Space Agency to build this satellite which is expected to be launched by end of 2023 from French Guiana. The mission will deliver profiles of the stratospheric ozone, as well as profiles of other atmospheric trace gases. This will provide scientific understanding on how the rise in greenhouse gases affects the atmosphere.

Tomás Flanagan, ÉireComposites CEO said: “The ALTIUS satellite will signal a major milestone for Irish participation in space exploration as the three stray light baffles will become the first optical instruments manufactured in Ireland and the largest satellite parts manufactured in this country. This is a massive achievement for the company and I hope this will be the first of many parts we manufacture for space exploration missions.”

“The ALTIUS mission will play a substantial role in how we look at climate change and the impact it has on Earth. The mission will allow for long-term monitoring and scientific study of the protective ozone layer which covers Earth and inform decisions around climate change. I am excited that we will be part of this research and I would like to take the opportunity to commend the team here in Inverin that have contributed to our success in obtaining this contract.”

www.eircomposites.com

The post ÉireComposites to create satellite optical instrument for ESA appeared first on Aerospace Manufacturing.

Checkout PrimeXBT
Trade with the Official CFD Partners of AC Milan
Source: https://www.aero-mag.com/eirecomposites-to-create-satellite-optical-instrument-for-esa/

Continue Reading

Aerospace

ÉireComposites to create satellite optical instrument for ESA

Avatar

Published

on

ÉireComposites has announced an agreement with the Belgian company, OIP Sensor Systems to design and produce stray light baffles, which will form part of the European Space Agency’s ALTIUS satellite.

The baffles will be the first external part and largest functioning piece of equipment ever to be manufactured in Ireland and launched into space.

The stray light baffles will prevent out-of-field stray light from reaching the lenses of the satellite’s optical instruments; instead, a system with periscope mirrors will be used to align the light. Stray light baffles rely upon highly controlled and precise manufacturing and finishing. ÉireComposites will manufacture the three baffles that will be attached to the side of the satellite to assist with the mission objective.

OIP forms part of a consortium that signed the contract with the European Space Agency to build this satellite which is expected to be launched by end of 2023 from French Guiana. The mission will deliver profiles of the stratospheric ozone, as well as profiles of other atmospheric trace gases. This will provide scientific understanding on how the rise in greenhouse gases affects the atmosphere.

Tomás Flanagan, ÉireComposites CEO said: “The ALTIUS satellite will signal a major milestone for Irish participation in space exploration as the three stray light baffles will become the first optical instruments manufactured in Ireland and the largest satellite parts manufactured in this country. This is a massive achievement for the company and I hope this will be the first of many parts we manufacture for space exploration missions.”

“The ALTIUS mission will play a substantial role in how we look at climate change and the impact it has on Earth. The mission will allow for long-term monitoring and scientific study of the protective ozone layer which covers Earth and inform decisions around climate change. I am excited that we will be part of this research and I would like to take the opportunity to commend the team here in Inverin that have contributed to our success in obtaining this contract.”

www.eircomposites.com

The post ÉireComposites to create satellite optical instrument for ESA appeared first on Aerospace Manufacturing.

Checkout PrimeXBT
Trade with the Official CFD Partners of AC Milan
Source: https://www.aero-mag.com/eirecomposites-to-create-satellite-optical-instrument-for-esa/

Continue Reading

Aerospace

ÉireComposites to create satellite optical instrument for ESA

Avatar

Published

on

ÉireComposites has announced an agreement with the Belgian company, OIP Sensor Systems to design and produce stray light baffles, which will form part of the European Space Agency’s ALTIUS satellite.

The baffles will be the first external part and largest functioning piece of equipment ever to be manufactured in Ireland and launched into space.

The stray light baffles will prevent out-of-field stray light from reaching the lenses of the satellite’s optical instruments; instead, a system with periscope mirrors will be used to align the light. Stray light baffles rely upon highly controlled and precise manufacturing and finishing. ÉireComposites will manufacture the three baffles that will be attached to the side of the satellite to assist with the mission objective.

OIP forms part of a consortium that signed the contract with the European Space Agency to build this satellite which is expected to be launched by end of 2023 from French Guiana. The mission will deliver profiles of the stratospheric ozone, as well as profiles of other atmospheric trace gases. This will provide scientific understanding on how the rise in greenhouse gases affects the atmosphere.

Tomás Flanagan, ÉireComposites CEO said: “The ALTIUS satellite will signal a major milestone for Irish participation in space exploration as the three stray light baffles will become the first optical instruments manufactured in Ireland and the largest satellite parts manufactured in this country. This is a massive achievement for the company and I hope this will be the first of many parts we manufacture for space exploration missions.”

“The ALTIUS mission will play a substantial role in how we look at climate change and the impact it has on Earth. The mission will allow for long-term monitoring and scientific study of the protective ozone layer which covers Earth and inform decisions around climate change. I am excited that we will be part of this research and I would like to take the opportunity to commend the team here in Inverin that have contributed to our success in obtaining this contract.”

www.eircomposites.com

The post ÉireComposites to create satellite optical instrument for ESA appeared first on Aerospace Manufacturing.

Checkout PrimeXBT
Trade with the Official CFD Partners of AC Milan
Source: https://www.aero-mag.com/eirecomposites-to-create-satellite-optical-instrument-for-esa/

Continue Reading
Blockchain5 days ago

PancakeSwap Review: Leading AMM on Binance Smart Chain

Covid195 days ago

How Precious Metals Royalty and Streaming Companies Create Value

SPAC Insiders5 days ago

SilverBox Engaged Merger Corp I (SBEAU) Prices $300M IPO

SPACS5 days ago

A Fundamentally Different Kind of SPAC

Nano Technology5 days ago

A speed limit also applies in the quantum world: Study by the University of Bonn determines minimum time for complex quantum operations

Nano Technology5 days ago

Dynamics of nanoparticles using a new isolated lymphatic vessel lumen perfusion system

SPACS5 days ago

Shake Shack Creator Danny Meyer Launches SPAC With Charitable Partner

Bioengineer5 days ago

Lethal house lures reduce incidence of malaria in children

cea-leti-dolphin-design-report-fd-soi-breakthrough-that-boosts-operating-frequency-by-450-and-reduces-power-consumption-by-30-joint-paper-presented-at-isscc-2021-shows-how-new-adaptive-back-biasing.jpg
Nano Technology5 days ago

CEA-Leti & Dolphin Design Report FD-SOI Breakthrough that Boosts Operating Frequency by 450% and Reduces Power Consumption by 30%: Joint Paper Presented at ISSCC 2021 Shows How New Adaptive Back-Biasing Technique Overcomes Integration Limits in Chip Design Flows

SPAC Insiders5 days ago

Fusion Acquisition Corp. II (FSNB.U) Prices Upsized $435M IPO

Nano Technology5 days ago

Atomic nuclei in the quantum swing: The extremely precise control of nuclear excitations opens up possibilities of ultra-precise atomic clocks and powerful nuclear batteries

180-degree-capital-corp-reports-6-7-growth-in-q4-2020-9-28-net-asset-value-per-share-as-of-december-31-2020-and-developments-from-q1-2021-including-expected-investment-in-a-planned-spac-sponsor.gif
Nano Technology5 days ago

180 Degree Capital Corp. Reports +6.7% Growth in Q4 2020, $9.28 Net Asset Value per Share as of December 31, 2020, and Developments from Q1 2021 Including Expected Investment in a Planned SPAC Sponsor

SPACS5 days ago

Insurance Services Firm, SPAC Sponsor, and SPAC Execs Hit with Post-deSPAC Securities Suit

Aerospace5 days ago

Virgin Galactic further delays SpaceShipTwo test flights

Automotive5 days ago

Michelin launches first EV tire designed for Electric Sports Vehicles

Bioengineer4 days ago

Bioinformatics tool accurately tracks synthetic DNA

Bioengineer4 days ago

Unburdening China of cancer: Trend analysis to assist prevention measures

Nano Technology4 days ago

CEA-Leti & Dolphin Design Report FD-SOI Breakthrough that Boosts Operating Frequency by 450% and Reduces Power Consumption by 30%: Joint Paper Presented at ISSCC 2021 Shows How New Adaptive Back-Biasing Technique Overcomes Integration Limits in Chip Design Flows

AR/VR5 days ago

You Can Now Activate Quest Voice Commands Hands-free, But You’ll Have to Say “Hey Facebook”

Automotive5 days ago

Elon Musk shares update on Tesla Model 3 production and Model S/X refresh demand in leaked email

Trending