Tuesday February 19, 2019
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NASA fires up engine to take astronauts to Mars

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Washington: As part of its ambitious Space Launch System (SLS), the US space agency has successfully tested an engine that will help propel astronauts on future deep-space missions, including Mars.

Photo Credit: www.ubergizmo.com
Photo Credit: www.ubergizmo.com

The 535-second test of RS-25 rocket engine at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, was aimed to collect engine performance data, the US space agency said in a statement.

An initial 77-tonne SLS configuration will use four RS-25 engines for the core stage, along with two five-segment solid rocket boosters, providing more lift to orbit than any current launch vehicle.

One final test of this RS-25 developmental engine is left and testing of flight engines will begin later this fall.

The core stage for the first SLS and Orion integrated flight will also be tested at Stennis.

That test will involve simultaneous firing of the four RS-25 engines just as during an actual launch.

Powered by four RS-25 engines, the SLS will send the Orion spacecraft into deep space missions.

“The RS-25 engine gives SLS a proven, high performance, affordable main propulsion system for deep space exploration,” NASA said.

It is one of the most experienced large rocket engines in the world, with more than a million seconds of ground test and flight operations time.

When completed, SLS will enable astronauts to begin their journey to explore destinations far into the solar system.
During the joint Senate-NASA presentation in September 2011, it was stated that the SLS programme has a projected development cost of $18 billion through 2017.

It will be divided into $10 billion for the SLS rocket, $6 billion for the Orion Multi-Purpose Crew Vehicle and $2 billion for upgrades to the launch pad and other facilities at the Kennedy Space Center.

(IANS)

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Anticipated Problems That May Effect NASA’s Mars Mission

According to results from the first eight analog space crews, presented at the American Association for the Advancement of Science (AAAS) annual meeting in Washington, D.C., the astronauts are able to successfully complete tasks between 20 and 60 per cent of the time.

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NASA has formalised plans to send a manned mission to Mars, a journey that could involve 250 million miles of travel on a small spacecraft.  Pixabay

Researchers are developing a predictive model to help NASA anticipate conflicts and communication breakdowns among crew members and tick off problems that may make or break the Mission to Mars.

NASA has formalised plans to send a manned mission to Mars, a journey that could involve 250 million miles of travel on a small spacecraft.

To understand the psychological demands of this Mars journey, Northwestern University has charted a multi-phase study conducted in two analog environments — HERA in the Johnson Space Center in Houston and the SIRIUS Mission in the NEK analog located in the Institute for Bio-Medical Problems (IBMP) in Russia.

The varsity will study the behaviour of analog astronaut crews on mock missions, complete with isolation, sleep deprivation, specially designed tasks and mission control, which mimics real space travel with delayed communication.

Mars
NASA has formalised plans to send a manned mission to Mars, a journey that could involve 250 million miles of travel on a small spacecraft. 
Pixabay

“Astronauts are super humans. They are people who are incredibly physically fit and extremely smart,” said Leslie DeChurch, Professor at Northwestern.

“We’re taking an already state-of-the-art crew selection system and making it even better by finding the values, traits and other characteristics that will allow NASA to compose crews that will get along,” DeChurch added.

HERA’s capsule simulator houses astronauts for up to 45 days — a mock mission control outside the capsule — that augments the realism with sound effects, vibrations and communication delays.

space
According to results from the first eight analog space crews, presented at the American Association for the Advancement of Science (AAAS) annual meeting in Washington, D.C., the astronauts are able to successfully complete tasks between 20 and 60 per cent of the time. Pixabay

Those on the inside undergo sleep deprivation and try to perform tasks. The researchers collect moment-to-moment metrics about individual performance, moods, psychosocial adaptation and more.

According to results from the first eight analog space crews, presented at the American Association for the Advancement of Science (AAAS) annual meeting in Washington, D.C., the astronauts are able to successfully complete tasks between 20 and 60 per cent of the time.

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The next phase of the research, which began on February 15, involves using the model to predict breakdowns and problems a new HERA crew will experience and making changes to “who works with whom, on what, and when”.

The experiment on the SIRIUS analog in Moscow, will begin on March 15, where four Russians and two Americans, will undertake a 120-day fictional mission around the moon, including a moon landing operation. (IANS)