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Japan’s Epsilon rocket ordered to self-destruct after failed launch

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Japan’s Epsilon rocket ordered to self-destruct after failed launch​


Agence France-Presse

Published: 10:46am, 12 Oct, 2022

Japan’s space agency sent a self-destruct order to its Epsilon rocket after a failed launch, public broadcaster NHK and other local media reported on Wednesday.

The Japan Aerospace Exploration Agency (JAXA) was not immediately able to confirm the reports, which said a problem had been discovered that meant the rocket could not safely fly.

A JAXA live-stream of the launch from Uchinoura Space Centre in the southern Kagoshima region was interrupted and presenters said there had been a problem, without giving details.

The launch was delayed from its originally scheduled slot on Friday due to unfavourable satellite positioning concerns that could have made it difficult to track the rocket’s location.


NHK and other media outlets said it was Japan’s first failed rocket launch since 2003.

The solid-fuel Epsilon rocket has been in service since 2013, and has been successfully launched five times.

It is smaller than the country’s previous liquid-fuelled model, and is a successor to Japan’s solid fuel M-5 rocket that was retired in 2006 due to its high cost.
The rocket was taking several satellites into orbit, and is designed to launch in three stages.

 
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China shall role in South Korea as partner for rocket project. They are keen to learn something and while the same time having the money. Collaborating with China will help them accelerate their space program fast to match Japan space technology level.
 

Japanese rocket launch fails in blow for space agency​

by Kyoko HASEGAWA
OCTOBER 12, 2022

The launch of a Japanese rocket taking satellites into orbit to demonstrate new technologies failed after blast-off on Wednesday because of a positioning problem, the country's space agency said.

It was Japan's first failed launch in nearly two decades, and the only one for an Epsilon rocket, a solid-fuel model that has flown five successful missions since its 2013 debut.

The unmanned craft took off from Uchinoura Space Center in the southern Kagoshima region, with its lift-off livestreamed by the Japan Aerospace Exploration Agency (JAXA).

But a self-destruct signal was sent to the rocket less than 10 minutes later because of "positioning abnormalities", said Yasuhiro Funo of JAXA, who led the project.

The livestream was halted and presenters wearing hard-hats told viewers there had been a problem with the launch.

Funo explained at a press conference that a technical issue was detected before the third—and final—stage of the launch, just as the last powerful booster was about to be ignited.

"We ordered the rocket's destruction because if we cannot send it into the orbit that we planned, we don't know where it will go," he said, leading to safety concerns about where the machinery could fall.

After the mission was aborted, the rocket's parts were assumed to have landed in the sea east of the Philippines, he added.

Japan's last failed space launch was of a pair of spy satellites to monitor North Korea in 2003, and the only other time JAXA has sent a destroy order to a rocket was in 1999.

'Pulsed-plasma thruster'

The 26-meter (85-foot) Epsilon-6 rocket had been carrying a box-shaped satellite due to orbit Earth for at least a year to carry out experiments, as well as eight micro-satellites.

Researchers and private companies had engineered new technologies to be tried out in space as part of the agency's third Innovative Satellite Technology Demonstration program.

Their gadgetry ranged from a "pulsed-plasma thruster" to an experiment in "harvesting energy with (a) lightweight integrated origami structure", according to a JAXA fact sheet.

JAXA describes Epsilon as "a solid-fuel rocket designed to lower the threshold to space... and usher in an age in which everyone can make active use of space".

It is smaller than the country's previous liquid-fuelled model, and a successor to the solid-fuel M-5rocket that was retired in 2006 due to its high cost.

JAXA president Hiroshi Yamakawa apologized for Wednesday's failure, saying the agency was "terribly sorry that we couldn't meet the Japanese people's expectations".

"We will pour efforts into finding out the cause and will take counter-measures" to prevent a recurrence, Yamakawa said.

Japan's space program is one of the world's largest, and last week JAXA astronaut Koichi Wakata flew to the International Space Station as part of the Crew-5 mission.

JAXA has also been in the spotlight after its mission to the asteroid Ryugu by a space probe named Hayabusa-2, which collected pristine material from the celestial body that is now being analyzed for clues to the origins of life.

 
Typical Japanese made rocket :omghaha:
Never mind, I re-read the news carefully, this is the first time in 19 years that a japanese rocket has failed to launch.

It's not typical at all, most of their records were spotless.
 
Never mind, I re-read the news carefully, this is the first time in 19 years that a japanese rocket has failed to launch.

It's not typical at all, most of their records were spotless.
They don't launch many rokets like China, US and Russia do.
In 2021 , China launched 56 rockets, US 51, Russia 25 ......Japan3, India2
 
They don't launch many rokets like China, US and Russia do.
In 2021 , China launched 56 rockets, US 51, Russia 25 ......Japan3, India2
If they launch 2 each year, that means they have launched over 38 rockets over 19 years without falling.

That's a really good record for any nation, in comparison, China has had failures numerous years, even 2021 and 2022.
 
If they launch 2 each year, that means they have launched over 38 rockets over 19 years without falling.

That's a really good record for any nation, in comparison, China has had failures numerous years, even 2021 and 2022.
In 2021, China's launch success rate is comparable to that of the United States. In fact, except for India's 50%, all countries a high launch success rate in 2021.
 
In 2021, China's launch success rate is comparable to that of the United States. In fact, except for India's 50%, all countries a high launch success rate in 2021.
Japan has keep that launch success rate as 100% since the last 19 years, and now this year it falls to 66% (with one launch failure this time).

I initially thought this was a setback, but it seems one failure in 19 years isn't something to write Japan off, failure is the mother of success.
 
If they launch 2 each year, that means they have launched over 38 rockets over 19 years without falling.
Japan launched 3 in 2021, not 2. China used to have a perfect score, 100% success rate decades ago when she only launched a couple of rockets each year.

China launches one rocket almost every single day in the past week, no one knows how many China will launch this year.
 
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In 2021, China's launch success rate is comparable to that of the United States. In fact, except for India's 50%, all countries a high launch success rate in 2021.
well a majority of Chinese SLV's are solid chemical rockets so no real surprise.
If I'm right all Chinese manned missions have been powered by solid rockets so far.

I'm not saying this is wrong or right. Just saying solid fuelled rockets are less complex and therefore more reliable. The only down side is environmental pollution.
 
Japan launched 3 in 2021, not 2. China used to have a perfect score, 100% success rate decades ago when she only launched a couple of rockets each year.

China launches one rocket almost every single day in the past week, no one knows how many China will launch this year.
Obviously as they launch more, the success rate drops because more mistakes will be made.
Japan is actually increasing their launch rate this year (it's 4) and next year will be 13, so expect more failures launch, just like China.
 
If they launch 2 each year, that means they have launched over 38 rockets over 19 years without falling.

That's a really good record for any nation, in comparison, China has had failures numerous years, even 2021 and 2022.
Chinese Long March rockets are among the most reliable ones in the world with pretty good success rate, the Chinese manned space program has 100% success rate with its rockets and that cant be said of the US and Soviet manned programs. Japan is not even a major player here.



Success Rates of Key Rocket Series
CountryRocket SeriesSuccess Rate (%)
RussiaSoyuz97.2
USADelta95.5
ChinaLong March95.3
IndiaPSLV93.3
USAFalcon93.1
RussiaKosmos92.6
RussiaVostok91.0
USAAtlas89.6
 
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Japan has keep that launch success rate as 100% since the last 19 years, and now this year it falls to 66% (with one launch failure this time).

I initially thought this was a setback, but it seems one failure in 19 years isn't something to write Japan off, failure is the mother of success.
Yeah, japan can keep their launches to zero better over the years then it can claim their success rate is 100%, thats great. Just as Japanese often claim their HSR is safer than Chinese HSR supposedly with better accident number records while they conveniently ignore the fact that Chinese HSR is almost 20 times the scale of Japan or at least more than 10 times for many years.
 

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