Shulou(Shulou.com)11/24 Report--

CTOnews.com, March 2 news, the No. 1 machine of the new main rocket H3, jointly developed by the Japan Aerospace Exploration Agency and Mitsubishi heavy Industries, was tested and launched at the seed Island Universe Center on February 17, but unfortunately it could not lift off as expected, resulting in the failure of the launch mission because the first-stage hydrogen and oxygen engine of the rocket was automatically shut down after ignition.

Japan's new generation rocket H3-22s TF1 will make another attempt to launch the ALOS-3 (Advanced Land observation Satellite 3) optical remote sensing satellite around 09:37 Beijing time on March 6, according to the latest announcement released yesterday. CTOnews.com inquiry found that the satellite was developed by Mitsubishi Electric. Its design life is 7 years, the total weight is about 3 tons, the length × height × width (wingspan) is 3.6m × 5.0m × 16.5m, the working orbit is the sun synchronous orbit of height 669km, the place of descent is 10:30AM, the revisit period is 35 days, and the panchromatic resolution is 0.8m.

According to reports, this is the successor to the H2A rocket that JAXA and Mitsubishi heavy Industries have been jointly developing since 2014. at present, the project lasts nine years and the total cost has exceeded 200 billion yen.

Public data show that the maximum diameter of the H3 carrier rocket is 5.2 meters, the carrying capacity of the sun synchronous orbit is more than 4 tons, and the carrying capacity of the geosynchronous transfer orbit is 7.9 tons. The payload is about 30% larger than that of H2A, but the launch cost is about half of it.

The H3 rocket has a maximum configuration (H3-24L) of 63 meters high and a takeoff mass of 575 tons (excluding payload). It uses a solid booster and a liquid hydrogen and liquid oxygen engine for the first and second stages. The design goal is to increase the carrying capacity and reduce the launch cost relative to the Hmura, and it is the main rocket of Japan in the future.

The LE-9 open expansion cycle liquid hydrogen liquid oxygen engine used this time is a new type of high performance rocket engine developed by Japan. It has a single vacuum thrust of 1471 KN (about 150T) and a vacuum specific impulse of 422s, which is the leading level in the world.

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