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Showing posts with label japan. Show all posts
Showing posts with label japan. Show all posts
Saturday 15 November 2014
Friday 14 November 2014
3D-printed engine parts future of space launches: NASA
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A team of NASA researchers has found that 3D manufactured copper parts could withstand the heat and pressure required of combustion engines used in space launches.
The US space agency and California-based rocket and missile propulsion manufacturer Aerojet Rocketdyne (AR) conducted 19 hot-fire tests on four injector and thrust chamber assembly configurations at NASA's Glenn Research Centre.
"The successful hot fire test of engine components provides confidence in the additive manufacturing process and paves the way for full-scale development," said Tyler Hickman, lead engineer for the test at Glenn.
3D printing approach is changing the speed, cost and flexibility of designing and building future machines for space and earth applications.
The work is a major milestone in the development and certification of different materials used in the manufacturing process.
Copper alloys offer unique challenges to the additive manufacturing processes.
"Additively manufactured metal propulsion components are truly a paradigm shift for the aerospace industry," added Paul Senick, Glenn project manager.
This will improve efficiency and bring down the cost of space launches and other earth applications, he concluded.
Source : business standard
A team of NASA researchers has found that 3D manufactured copper parts could withstand the heat and pressure required of combustion engines used in space launches.
The US space agency and California-based rocket and missile propulsion manufacturer Aerojet Rocketdyne (AR) conducted 19 hot-fire tests on four injector and thrust chamber assembly configurations at NASA's Glenn Research Centre.
"The successful hot fire test of engine components provides confidence in the additive manufacturing process and paves the way for full-scale development," said Tyler Hickman, lead engineer for the test at Glenn.
3D printing approach is changing the speed, cost and flexibility of designing and building future machines for space and earth applications.
The work is a major milestone in the development and certification of different materials used in the manufacturing process.
Copper alloys offer unique challenges to the additive manufacturing processes.
"Additively manufactured metal propulsion components are truly a paradigm shift for the aerospace industry," added Paul Senick, Glenn project manager.
This will improve efficiency and bring down the cost of space launches and other earth applications, he concluded.
Source : business standard
Wednesday 5 November 2014
China probe flies around moon and back in first such mission since 1970s
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Chinese researchers examine the scorched Chang’e 5-T1 return capsule after it landed successfully in Inner Mongolia having travelled around the moon and back.
Photograph: Xinhua
China has completed its first return mission to the moon with the successful re-entry and landing on Earth of an unmanned probe, state media reported.
The probe, Chang’e 5-T1, landed safely in northern China’s Inner Mongolia region, state news agency Xinhua said, citing the Beijing Aerospace Control Centre.
Xinhua said the probe, dubbed “Xiaofei” (little flyer) on social media, took “some incredible pictures” of the Earth and the moon. It is the first trip around the moon and back since US and Russian flights of the 1970s, 40 years ago.
Prior to re-entering the Earth’s atmosphere the unnamed probe had been travelling at 11.2 kilometres per second (25,000 miles per hour), a speed that can generate temperatures of more than 1,500C (2,700F), the news agency reported.
To slow it down scientists let the craft “bounce” off Earth’s atmosphere before re-entering again and landing.
The probe’s mission was to travel to the moon, fly around it and head back to Earth, said the the state science and technology agency, Sastind. The module went 413,000km from Earth at its furthest point.
The mission was launched to test technology to be used in the Chang’e-5, China’s fourth lunar probe, which aims to gather and return samples from the surface in 2017.
The military-run space project has plans for a permanent orbiting station by 2020 and eventually to send a human to the moon.
China currently has a robotic rover, Yutu (Jade Rabbit), on the moon. It landed on 14 December 2013 and completed parts of its mission before grinding to a halt on 25 January 2014 due to equipment failure.
Source : The Guardian
Chinese researchers examine the scorched Chang’e 5-T1 return capsule after it landed successfully in Inner Mongolia having travelled around the moon and back.
Photograph: Xinhua
China has completed its first return mission to the moon with the successful re-entry and landing on Earth of an unmanned probe, state media reported.
The probe, Chang’e 5-T1, landed safely in northern China’s Inner Mongolia region, state news agency Xinhua said, citing the Beijing Aerospace Control Centre.
Xinhua said the probe, dubbed “Xiaofei” (little flyer) on social media, took “some incredible pictures” of the Earth and the moon. It is the first trip around the moon and back since US and Russian flights of the 1970s, 40 years ago.
Prior to re-entering the Earth’s atmosphere the unnamed probe had been travelling at 11.2 kilometres per second (25,000 miles per hour), a speed that can generate temperatures of more than 1,500C (2,700F), the news agency reported.
To slow it down scientists let the craft “bounce” off Earth’s atmosphere before re-entering again and landing.
The probe’s mission was to travel to the moon, fly around it and head back to Earth, said the the state science and technology agency, Sastind. The module went 413,000km from Earth at its furthest point.
The mission was launched to test technology to be used in the Chang’e-5, China’s fourth lunar probe, which aims to gather and return samples from the surface in 2017.
The military-run space project has plans for a permanent orbiting station by 2020 and eventually to send a human to the moon.
China currently has a robotic rover, Yutu (Jade Rabbit), on the moon. It landed on 14 December 2013 and completed parts of its mission before grinding to a halt on 25 January 2014 due to equipment failure.
Source : The Guardian
Wednesday 29 October 2014
JAXA shows off second-generation asteroid explorer 'Hayabusa 2'
Japan's space agency showed off a space probe to be launched next month that it hopes will answer questions about how life seeded Earth.
The Japan Aerospace Exploration Agency (JAXA) intends to land Hayabusa 2 on an asteroid orbiting between Earth and Mars. It is set to be launched by an H-2A rocket from the Tanegashima Space Center here on Nov. 30.
Its predecessor, launched in 2003, returned to Earth after a seven-year mission, during which it landed on an asteroid and collected sample material, an unprecedented achievement.
JAXA showed off the near complete body of its second-generation asteroid explorer to reporters on Oct. 27.
Hayabusa 2 will embark on a six-year journey to collect samples from an asteroid called 1999 JU3. Scientists expect the mission to shed light on the origins of the solar system and life on Earth.
The spherical asteroid is about 900 meters diameter and is thought to contain organic compounds and water, the key to life. It was first observed in 1999.
Hayabusa 2 arrived at Tanegashima island, south of Kagoshima, on Sept. 22. The capsule, impactor and other parts were then assembled.
A JAXA official said Hayabusa 2 will be attached to the rocket after fueling operations are complete and the exterior of the explorer has been inspected for flaws.
Hayabusa 2 is slated to reach the asteroid between June and July in 2018, and spend 18 months on the celestial body before returning to Earth between November and December in 2020.
The explorer will release the impactor to smash a crater and collect mineral samples that have not been exposed to and affected by the heat of the sun.
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