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Japan launches H3 rocket with defense satellite to boost secure communications
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Japan launches H3 rocket with defense satellite to boost secure communications
by Riko Seibo
Tokyo, Japan (SPX) Nov 05, 2024

Japan successfully launched its H3 rocket on Monday, carrying a defense communications satellite from the Tanegashima Space Center in Kagoshima Prefecture. This launch is part of Japan's strategy to strengthen its secure communications network, specifically enhancing information-sharing capabilities among the nation's Self-Defense Forces.

The H3 rocket, developed by the Japan Aerospace Exploration Agency (JAXA) in collaboration with Mitsubishi Heavy Industries, successfully deployed the satellite into its designated orbit shortly after liftoff. This mission underscores Japan's commitment to expanding its defense and communications infrastructure amid growing regional security concerns.

The H3 series, which has faced numerous technical challenges, is poised to gradually replace the long-standing H2A rockets. Designed with greater payload capacity and reduced launch costs, the H3 is expected to be Japan's primary launch vehicle in the coming years, meeting both government and commercial needs. The H2A rockets, which have been in operation since 2001, are slated for retirement by the end of fiscal 2024, following the launch of H2A rocket No. 50, planned for March next year.

H3 Rocket's Development and Recent Issues
The H3 program faced significant setbacks, notably during its inaugural launch attempt in March 2023. In this first attempt, the rocket's second stage failed to ignite after separation, forcing JAXA to destroy the vehicle mid-flight. This failure came as a disappointment to Japan's space sector, which had invested heavily in the H3's design as a next-generation workhorse for a variety of missions, from Earth observation to defense.

The failure led to an extensive investigation by JAXA and Mitsubishi Heavy Industries, with engineers identifying and addressing the issues that led to the ignition malfunction. The H3 resumed launches later in 2023 with modifications, successfully completing two missions this year before the current defense satellite launch. The recent successful launches mark a cautious yet optimistic turning point for the H3, which is expected to reduce Japan's reliance on imported rocket components and create a more resilient, cost-effective domestic launch system.

Japan's Expanding Space Sector and Strategic Goals
Japan's space sector has grown steadily over recent decades, with JAXA playing a central role in advancing satellite, lunar, and planetary missions. With growing competition from other spacefaring nations and an increase in regional security needs, Japan's government has been increasingly focused on building an independent and robust space industry. Initiatives such as the Basic Space Plan aim to boost Japan's technological capabilities in space, emphasizing both scientific exploration and national security.

Japan's launch sector, while not as high-frequency as those of the United States or China, has earned a reputation for reliability through the H2A and H2B rockets. These vehicles have launched critical payloads, including meteorological satellites, Earth observation missions, and components for the International Space Station. Japan's recent focus on the H3 reflects a push to modernize this fleet, aiming for an affordable, adaptable platform capable of launching diverse payloads in an increasingly competitive global launch market.

As the H3 program moves forward, JAXA and Mitsubishi Heavy Industries aim to position it as a cornerstone of Japan's space capabilities. Japan's ambitions include potential lunar exploration missions, deep-space probes, and strategic satellites that support national defense. Monday's launch signifies not only the growing reliability of the H3 but also Japan's determination to secure a more prominent position in the global space industry.

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