Japan's H-IIB Rocket: A Powerful Step in Space Exploration

Discover the ISS cargo missions and specifications of Japan's powerful H-IIB rocket. The success of Mitsubishi and JAXA is examined in detail


Japan's H-IIB Rocket: A Powerful Step in Space Exploration
H-IIB is one of the most powerful rockets of Japan's space exploration program. Developed by Mitsubishi Heavy Industries and the Japan Space Research Agency (JAXA), the H-IIB has been used specifically for cargo transport missions to the International Space Station (ISS). In this article, we will examine in detail the design, technical characteristics and important tasks of the H-IIb

Design and Specifications

The H-IIB is a rocket consisting of two main stages and is supported by four solid rocket thrusters (SRB-A3). The first stage is powered by two LE-7A engines and uses liquid hydrogen (LH2) and liquid oxygen (LOX). The second stage includes a LE-5B engine and again uses LH2/LOX. The height of the rocket is 56.6 meters, its diameter is 5.2 meters, and its mass is about 531,000 kilograms. The H-IIB is capable of carrying 19,000 kilograms of cargo to the low Earth orbit (LEO) and 8,000 kilograms to the geostatic transfer orbit (GTO).

Achievements and Important Missions The H-IIB was used in missions

to transport the H-II Transfer Vehicle (HTV, or Kōnotori) to the ISS. The rocket performed a total of nine successful flights from 2009 to 2020. These achievements of the H-IIB proved Japan's capabilities
in space exploration.

Impact on Space Industry The development and

successful flights of the H-IIB have enhanced Japan's independence and competitiveness in the space industry. The rocket's flexible configuration and strong carrying capacity have made Japan an influential player in the international space community. H-IIB has played an important role in technological advances in space exploration and in support to the ISS. The H-IIB rocket is a demonstration of Japan's achievements and technological advances in the field of space exploration. With its strong thrust capability and high reliability, the H-IIB has played a key role in carrying cargo to the ISS and other important missions. The rocket also served as an important foundation for future Japanese spacecraft and missions
.
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