thejapantimes, to Japan
@thejapantimes@mastodon.social avatar

The Japan Aerospace Exploration Agency has announced that the next launch of its new flagship H3 rocket will take place on June 30. https://www.japantimes.co.jp/news/2024/04/26/japan/jaxa-h3-rocket-third-launch-june/ #japan #jaxa #rockets #satellites #h3 #space

thejapantimes, to Japan
@thejapantimes@mastodon.social avatar

Tokyo-based startup Space One, racing to be Japan’s first private-sector firm to put a satellite into orbit, postponed the launch of its solid-fueled rocket on Saturday morning. https://www.japantimes.co.jp/news/2024/03/09/japan/science-health/space-one-rocket-postpone-japan/ #japan #sciencehealth #space #astronomy #rockets #jaxa #satellites #h3 #spaceone #kairos

elizabethtasker, to vr
@elizabethtasker@mastodon.online avatar

OK, so you weren't at Tanegashima last weekend for the #JAXA #H3 launch, and now your life is full of regrets?

Me too, people, me too.

BUT! There's now a 360 YouTube video that'll also look epic in #VR for you to experience it as if your toes were (almost) in the sea!

📺 :
https://youtu.be/_-pQpGLZsZg?si=Wr_lX-42rZTFRvgA

thejapantimes, to Japan
@thejapantimes@mastodon.social avatar

Can Japan's H3 rocket — which was launched successfully on Saturday — seriously compete with Elon Musk's Falcon 9? Experts say price and usability would be key. https://www.japantimes.co.jp/news/2024/02/20/japan/science-health/h3-rocket-marketing/ #japan #sciencehealth #rockets #jaxa #satellites #space #h3

spaceflight, to Japan
@spaceflight@spacey.space avatar
spaceflight,
@spaceflight@spacey.space avatar

The 63-metre #H3 🚀 is designed to carry a 6.5 metric ton payload into space and reduce per-launch cost to as low as $33m 💵 by adopting simpler structures and #automotive-grade #electronics. By comparison, the #HIIA costs about $66m per launch https://www.theguardian.com/world/2024/feb/17/japan-launches-second-flagship-h3-rocket-a-year-after-inaugural-flight-self-destructed

spaceflight,
@spaceflight@spacey.space avatar

🇯🇵 The rocket’s 6.5 tons to #GEO is higher than #Falcon9’s 5.5 ton capacity (in F9’s reusable configuration). Should the #H3’s launch price tag settle at around $50M, it could be price competitive with Falcon 9’s reusable launch cost of around $67M 📊 https://payloadspace.com/japans-h3-rocket-reaches-orbit-on-its-second-flight/

elizabethtasker, to random
@elizabethtasker@mastodon.online avatar

Weeeeeeee! JAXA's new #H3 launch vehicle shoots into the sky! Everything seems to be going well so far. The rocket is at 690km (higher than the International Space Station), moving at 4km/s.

Also, can we all admire the beauty of Japan's Tanegashima Space Center launch site?

The H3 rocket launches from Tanegashima Space Center. The sea can be seen just behind the rocket launch pad.

revesdespace, to random French

🚀 Le retour en vol du nouveau lanceur #H3 de la JAXA est prévu le 15 février 2024. Contrairement au premier lancement où un satellite (coûteux) d’observation #Alos3 avait été perdu, les charges utiles seront 2 cubesats et une barre de métal de 2,6 tonnes

underdarkGIS, to random
@underdarkGIS@fosstodon.org avatar

Awesome #PostGIS extension bonanza at #PostGISDay presented by Regina Obe

#GISChat #MobilityDB #pgRouting #h3 #PointClouds #Topology #geocoding

spaceflight, to space
@spaceflight@techhub.social avatar

📆 October 19, 2023 The 🇪🇺 Summit that will be held in , Spain 🇪🇸 , on 📆 November 6 and 7 is a crucial event for the continent's technological future. The delay ⏳ of the European and the technical problems are only the tip of the iceberg. For every euro 💶 invested, is ten times more efficient 📊 https://www.lemonde.fr/en/opinion/article/2023/10/19/the-european-space-industry-needs-to-get-its-act-together-before-it-s-too-late_6187587_23.html

"Revolution Space" report 📄 https://esamultimedia.esa.int/docs/corporate/h-lag_brochure.pdf

spaceflight, (edited )
@spaceflight@techhub.social avatar

Which #rocket 🚀 will first deliver #payload 🛰️ to #LEO ?

#Ariane design concept 📆 2014 https://en.wikipedia.org/wiki/Ariane_6
#H3 design concept 📆 2015 https://en.wikipedia.org/wiki/H3_(rocket)
#Starship design concept 📆 2018 https://en.wikipedia.org/wiki/SpaceX_Starship#Early_design_concepts_(2012%E2%80%932019)

DavidDarnes, to random
@DavidDarnes@mastodon.design avatar

Updated my iMac to Sonoma and now I'm wondering if it's possible to make these video backgrounds 🤔 (cc @rafa)

rafa,
@rafa@mastodon.design avatar

@DavidDarnes all I’ve heard is that it’s tricky… (from Ars Technica’s review) https://arstechnica.com/gadgets/2023/09/macos-14-sonoma-the-ars-technica-review/8/#h3

ZephyrXero, to technology in Intel announces Thunderbolt 5 with double the bandwidth (40 Gbps to 80 Gbps)

Yep. It’s also compatible with most all Thunderbolt 4 functionality. arstechnica.com/gadgets/2022/09/…/3/#h3

keithwilson, to ai
@keithwilson@fediphilosophy.org avatar

Can anyone recommend a good, and preferably relatively recent, textbook or anthology on the #PhilosophyOfAI? Ideally this should include discussion of ethical issues and be suitable for undergraduate study. Thanks! 🙏

#Philosophy #AI #AIEthics @philosophy @philosophyofmind

lupposofi,

@dredmorbius @keithwilson @philosophy @philosophyofmind Yes, the Ethics of AI entry is more on topic, and the corresponding IEP-entry has even a peek at the EU-level regulation-attempt, https://iep.utm.edu/ethics-of-artificial-intelligence/#H3.

spaceflight, to BBC
@spaceflight@techhub.social avatar

#NYT 📆 March 7, 2023 “A #destruct 💥 command https://www.youtube.com/live/cJN_2df5jR4 has been transmitted to #H3 🚀 because there was no possibility of achieving the mission” https://www.nytimes.com/2023/03/06/science/japan-rocket-h3-launch.html

#BBC The H3 #rocket is the first medium-lift rocket designed by #Japan 🇯🇵 in three decades.
It has been presented as a #cheaper alternative to #SpaceX's #Falcon 9 for launching commercial and government #satellites into #Earth's #orbit https://www.bbc.com/news/world-asia-64871603

#Jaxa

spaceflight, (edited )
@spaceflight@techhub.social avatar

For the #H3 rocket, #Japan 🇯🇵 aims to contain costs at around ¥5 billion ($35 million), about half of those 📉 associated with the #H2A but with 1.3 times more 📈 #satellite launch capacity https://www.japantimes.co.jp/news/2023/12/29/japan/jaxa-h3-rocket-launch-february/

#LaunchCost

spaceflight,
@spaceflight@techhub.social avatar

🇯🇵 #H3 test flight scheduled for 📆 Feb 15, 2024 01:22 CET https://nextspaceflight.com/launches/details/7166

#JAXA #Mitsubishi

CosmicPenguin, to random Chinese
CosmicPenguin,

Is the “Second Engine Lock In” here the command from vehicle guidance system to start the 2nd stage engine (chill-down etc.)?

It seems even that isn’t confirmed, i.e. the initiation sequence never started?

Hmm…

RT @clearusui
第2段エンジン推力立ち上がり
SELI(Second Engine Lock In)
が確認できず、
第2段が着火できなかった。

このまま飛行させても軌道投入できる見込みがないことから、指令破壊した。

第1段落下区域内に着水したものと思われる。

#H3ロケット
https://twitter.com/clearusui/status/1632975824369618945

CosmicPenguin,

In addition to the loss of main optical camera on ALOS-3 (combining 0.8 m resolution with wide image swath of 70 km, few has tried it out AFAIK), apparently Japanese MoD has a prototype IR sensor on board that would have paved way for a Japanese early warning satellite. Oops…

RT @chibamn11
ALOS3には、防衛装備庁が開発した「衛星搭載型2波長赤外線センサ」が搭載されていたはずなので、安全保障政策面での影響も大きそう...
#H3ロケット #H3TF1
https://twitter.com/chibamn11/status/1632933170495750144

CosmicPenguin,

There’s huge pressure looming on the H3 team now, especially given costly payload lost right off the bat. It’s not like the other new debuting rocket tomorrow where mere passing Max-Q “would be a big inflection point” for Relativity Space’s Terran-1. Not to mention Starship…

RT @NVSreporter
web会見終了後プレスルームに降りてきて下さって、ぶら下がりの会見に答えてくださった岡田 PM。
この後も直ぐに対策会議だそうです。
本当にお疲れ様でしたm(_ _)m
#H3TF1 #H3ロケット
https://twitter.com/NVSreporter/status/1633025728047636481

image/jpeg
image/jpeg
image/jpeg

CosmicPenguin,

Looks like JAXA & gov.’s rationale of putting an $280m major Earth observation mission on a (in @NASA_LSP’s terms) “uncertified” launch vehicle is getting a lot of backlashes, even ex-astronaut Soichi Noguchi is questioning it now:

RT @Astro_Soichi
#H3ロケット失敗 で叩かれてるけど #JAXA 頑張ろう。そもそも試験機に実用衛星載せる必然性は?H2八号機指令破壊の後のH2A初号機はダミー衛星だった。H3 50憶に対して #だいち3号 380憶だからリスクヘッジだよ。次は岡田さんにプレッシャー掛からないようゆっくり原因究明して「から打ち」にしては?
https://twitter.com/Astro_Soichi/status/1633275898932903936

spaceflight, to Japan
@spaceflight@techhub.social avatar

🇯🇵 : 's rocket 🚀 maiden launch 📆 Wednesday at : 63 meters tall and 5.2 meters in diameter, 4-8 tons payload https://asia.nikkei.com/Business/Aerospace-Defense-Industries/Japan-aims-to-fill-Russian-hole-in-launch-market-with-new-rocket

Wikipedia : https://en.wikipedia.org/wiki/H3_(rocket)

Pictures : https://commons.wikimedia.org/wiki/File:Tanegashima_location.jpg https://commons.wikimedia.org/wiki/File:H-IIB_F2_launching_HTV2.jpg

image/jpeg

spaceflight,
@spaceflight@techhub.social avatar

#Reuters 📆 Feb 14 🇯🇵 #JAXA will delay the maiden launch of its heavy-lift #H3 rocket 🚀 to Feb. 17 due to #weather ⚡ conditions https://www.reuters.com/business/aerospace-defense/jaxa-delays-japans-h3-rocket-launch-feb-17-citing-weather-conditions-2023-02-14/

spaceflight,
@spaceflight@techhub.social avatar

The rocket is about 50 percent more expensive 💰 than 's 9 . This problem was already clear nearly a ago, so the 🇯🇵 , , greenlit the development of the next-generation rocket 🚀 at $51 million https://arstechnica.com/science/2023/02/after-a-decade-in-development-japans-h3-rocket-is-ready-for-its-debut

Seems missed this strategy 〽️ for 🤔

Picture : H2A launch https://commons.wikimedia.org/wiki/File:H-2A%E3%83%AD%E3%82%B1%E3%83%83%E3%83%8840%E5%8F%B7%E6%A9%9F.jpg

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