H3 launches ALOS-4 (Daichi-4)

Подписаться 210 тыс.

Просмотров 3,2 тыс.

50% 1

The third H3 Launch Vehicle (H3 F3) launched the Advanced Land Observing Satellite-4 (ALOS-4) “Daichi-4” from the Tanegashima Space Center, on 1 July 2024, at 03:06:42 UTC (12:06:42 JST). According to the Japan Aerospace Exploration Agency (JAXA), ALOS-4 will “observe the Earth's surface using its onboard phased array type L-band synthetic aperture radar (PALSAR-3)”.
Credit: JAXA

Наука

Опубликовано:

29 июн 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 22

@dissaid День назад

Great Launch!

@studentjohn День назад

ALOS - 2 passes over my town regularly - I'm a satellite spotter and, with ALOS-2 being big enough and reflective enough to be usually visible for its whole track across our sky, it's become kind of an old friend.

@CarlosAM1 День назад

The wonderful screeching sound as good as ever, I still wonder to this day what causes it.

@dsdy1205 День назад

It's the exhaust from the expander turbine that drives the fuel/oxy pumps. Because there is an open pipe straight from the turbine to the atmosphere, you can hear the turbine bearings screeching as it hits max rpm

@CarlosAM1 День назад

@@dsdy1205 Thank you. A few years ago I remember going into a >1 hour long rabbit hole of trying to find what the reason for that sound was. I saw everywhere from people saying it was due to the shape of the rocket to the geometry of the nozzle or the turbopumps.

@dsdy1205 День назад

@@CarlosAM1 You're welcome! It's certainly possible that some of those other factors contribute as well, but largely the reason that stands out to me is the reason that the H3 rocket as a whole stands out as well - the use of a expander-bleed-cycle engine, something that does not really exist in any other orbit-worthy rocket in the world so far.

@CarlosAM1 День назад

@@dsdy1205 That does leave up a question tho, why do the HIIA and HIIB still make that screeching sound, despite having a closed cycle engine as the first stage...?

@dsdy1205 День назад

@@CarlosAM1 I mean, it doesn't really, from what I can hear. Do you have a link I can listen to?

@av_kovko День назад

H-III begins operational phase.

@sakura7431 День назад

not bad this time!

@rogerc7960 День назад

Whistle rocket

@jorge9312 День назад

Yo me pregunto porque los despegues se graban tan mal y la cámara tiembla o pierde el cohete, es que no tienen un sistema automático de grabación ?? parece como si el cámara estuviera borracho o tuviera parkinson. Por favor aprendan de space x y sus cámaras abordo. Tiempo han tenido para mejorar. Y los gráficos mejor no hablar. Lo bueno es que el cohete funciona, que ganas de verlo con los cuatro Srb y los tres motores en la primera fase. Ya mas cerca para lanzar la misión a Fobos. Felicidades JAXA

@vosa8268 День назад

Perfect Machine. Perfect work in the world Perfect team in the world Perfect Mission. Thank you very much 240701.

@striker4863 День назад

SLS mini 😂😂😂

@owenc.8288 День назад

Kawaii SLS

@AwardQueue День назад

H-3 is like Ariana-6 ls not next gen rocket,outdated.

@ASXSFS День назад

Does it matter?

@AwardQueue День назад

@@ASXSFS money matters.

@_K3PLR День назад

@@AwardQueue Cost per launch is about 50 million and JAXA is targeting 30 million down the line, quite cheap compared to ariane 6

@DestinyX42S1 День назад

@@_K3PLR Especially with the cheaper yen. Since the yen is around ¥161＝1$ today, the cost per launch will be around 31M$. which is pretty cheap for a launch.

@jorge9312 День назад

Exacto y no pueden competir en el mundo contra otros cohetes para lanzar cargas privadas, serán caros y solo para misiones japonesas o europeas en el caso de Ariane 6. Nada competitivos y de un solo uso, siguen jaxa y esa en el siglo XX.