Tag Archives: H3

Japan delays launch of new rocket one year

Capitalism in space: Because of a problem discovered in the development of its new first stage engine, Japan has now delayed the first launch of its new H3 rocket one year, to ’21.

Mitsubishi is building the rocket for Japan’s space agency JAXA, Since you design and build your rocket around your rocket engines, having a problem with that rocket engine puts a serious crimp on construction. Thus, identifying and dealing with such engine issues early in development is wise.

Still, Japan continues to lag behind the other space-faring nations in the development of its space industry.

Japan tests new engine for new rocket

Capitalism in space: Mitsubishi has successfully tested the new engine it will use in the new rocket, the H3, that it is building for Japan’s space agency, JAXA.

JAXA reports that the engine fired for the planned duration of 240 seconds (4 minutes) at the space agency’s Tanegashima Space Center. It was the seventh hot fire of the new engine, which is powered by liquid oxygen and liquid hydrogen.

JAXA plans H-3’s first test launch by the end of the nation’s 2020 fiscal year, which began on April 1 and will end on March 31, 2021. It is not known whether work slow downs resulting from the coronavirus (COVID-19) pandemic will affect the schedule.

The two-stage H3 is intended to be a more affordable and flexible replacement for the H-IIA and H-IIB boosters now in use. The new rocket is designed to place payloads weighing 4,000 kg (8,818 lb) or more into sun-synchronous orbit at 500 km (310.7 miles) or 6,500 kg (14,330 lb) into geosynchronous transfer orbit.

I do wish JAXA or Mitsubishi would give this rocket a more interesting name. It would help their woeful marketing attempts to sell it to other customers.

Mitsubishi offers its H3 rocket to Artemis

Earlier this week Japan announced that it planned to become a partner in NASA’s Artemis program to build a space station in lunar orbit.

That announcement was very vague. Yesterday an official from Mitsubishi Heavy Industries might have offered the first real detail, suggesting that its new H3 rocket, scheduled for its first lift-off in 2020, could be used to launch components for Artemis, as early as 2025. The official described one option for using the H3, sending Japan’s upgraded ISS cargo freighter, the HTV-X, to Gateway in 2025 or 2026.

Launching an HTV-X cargo vessel to the gateway would require two H3 launches, he said. The first launch would send an HTV-X into an orbit around the Earth, he said. The second launch would send up an upper stage with an enlarged fuel tank to dock with the HTV-X and propel it to the Gateway, he said.

What was not stated was who will pay for this. The U.S.? Japan? Either way Mitsubishi, which has failed badly in garnering any of the international commercial satellite business for its H2B rocket, is clearly trying to attract business now for the H3 rocket, supposedly designed to be cheaper to launch.

Japan’s next rocket on schedule for 2020 launch

A new Japanese rocket, the H3, being built by Mitsubishi and designed to cut launch costs by half, is presently on schedule for debut in 2020.

Key quote from the article:

JAXA has given MHI a greater level of influence on the H3 than it did with the H-2A. Ogasawara said whereas the total launch vehicle design for the H-2A was JAXA’s responsibility, MHI’s role as prime contractor and vehicle integrator gives the company more creative freedom. He stressed, however, that JAXA is still directly involved in the design and development for certain key components. “Therefore, we work together, JAXA and MHI, very closely,” he said.

I don’t know how much of that claim is true. That they are making it though suggests that they have been strongly influenced by the shift in the U.S. from NASA-run projects to commercially-run projects.

The launch cost of Japan’s H-IIA rocket

The competition heats up: Yesterday’s launch of Japan’s first commercial payload on its upgraded lower cost H-IIA rocket suggested that they are now a serious player in the competitive launch market. What the earlier articles didn’t tell me was the cost they charge to launch a payload on H-IIA.

This article today states that each launch costs 10 billion yen, which translates to about $80 million. That is about $10 million more than SpaceX charges for its Falcon 9, but is certainly cheaper than many other rocket companies. At this price they have a chance of grabbing some of the launch market, but to really compete they need to cut that cost even more, which the article suggests their next rocket will succeed in doing: “The government is developing a new core rocket named the H3, whose launches are expected to cost only about a half of the H2A.”

They do not say whether H3 will be reusable, but at $40 million per launch it will be the cheapest rocket on Earth. That it is government developed however makes me skeptical they will succeed. We shall see. What is clear, however, is that the competition is certainly encouraging the lowering of cost.