Galaxy Express Corporation

Galaxy Express Corporation, also known as GALEX, was a Japanese aerospace company formed to develop the GX rocket, an expendable launch vehicle intended for the commercial satellite-launch market. The company was established on 27 March 2001 as a joint venture associated with IHI Corporation and a group of Japanese and international aerospace and industrial companies. Its principal project was not a completed product but a proposed two-stage orbital launcher that combined an Atlas-derived first stage with a newly developed Japanese second stage using liquefied natural gas and liquid oxygen. The GX program originated as an attempt to advance the technology of Japan's J-I launch vehicle, which had flown only once. During its early planning, the project was briefly called J-II and was later referred to as J1-Upgrade before receiving the GX name in January 2003. The proposed launcher was initially associated with an Atlas III first stage and a launch from Tanegashima. The architecture was subsequently revised toward the Common Core Booster configuration used by the Atlas V family. Under the planned arrangement, United Launch Alliance would provide the first-stage technology, while IHI would produce the second stage and associated propulsion systems. JAXA participated in the development of the second-stage engine, with an eventual intention that responsibility would be transferred to the Galaxy Express venture. The GX concept was technically distinctive because its second stage was designed around liquefied natural gas fuel and liquid oxygen oxidizer. This propellant combination was intended to provide a balance of performance, storage characteristics, and development potential, but it also required a new propulsion system and contributed to the program's technical and financial risk. JAXA reported a successful full-scale second-stage engine test in October 2007, but the overall project continued to face questions about cost, schedule, configuration, and commercial viability. The Japanese government subjected GX to increasingly severe review during the late 2000s. Reports in 2007 highlighted unexpectedly rising costs, while the amount requested for the project in the fiscal 2008 budget was reduced from 15 billion yen to 5.6 billion yen. In 2008, the Space Development Committee considered whether the project should be cancelled. In November 2009, the Government Administration Reform Committee recommended ending funding for the second-stage engine. The government cancelled the GX project in December 2009, although research into LNG propulsion was expected to continue in other applications. Following the cancellation, IHI decided to dissolve Galaxy Express in January 2010. The company was disbanded around March 2010. Its short existence illustrates the difficulty of creating a commercially oriented launch venture around a government-supported development program, particularly when the vehicle's configuration, funding requirements, and market assumptions remained unsettled. Galaxy Express therefore ended as a project company rather than becoming an operating launch-service provider.

Galaxy Express Corporation was created on 27 March 2001 as a Japanese project company dedicated to development of the GX rocket. The venture brought together IHI Corporation, JAXA, United Launch Alliance, Lockheed Martin, and other Japanese industrial participants. Its purpose was to give institutional form to an effort to create a new expendable launcher for the commercial satellite market. The program developed from an attempted upgrade of Japan's J-I rocket, a vehicle that had flown once. Early project names included J-II and J1-Upgrade. The GX designation was adopted in January 2003. The proposed rocket was designed as a two-stage system. Earlier plans contemplated an Atlas III-derived first stage and a launch from Tanegashima, but the architecture was later changed to use an Atlas Common Core Booster. The first stage was associated with United Launch Alliance, while IHI was responsible for the newly designed second stage. The second stage was intended to use liquefied natural gas as fuel and liquid oxygen as oxidizer. This unusual propellant combination was one of the program's defining technical features. JAXA supported development of the engine, with the planned longer-term objective of transferring responsibility to Galaxy Express. A full-scale second-stage engine test was reported successful in October 2007. Despite technical progress, the project encountered escalating cost concerns and repeated design scrutiny. A late-2007 report described a major reassessment and noted that the GX funding request for fiscal 2008 had been reduced from 15 billion yen to 5.6 billion yen. The program was also affected by uncertainty over its launch architecture and the commercial case for the vehicle. In 2008, the Space Development Committee considered whether development should continue. The review process culminated in late 2009. The Government Administration Reform Committee recommended that funding for the second-stage engine be stopped in November. The Japanese government cancelled the GX project in December 2009. While LNG propulsion work was expected to continue in other contexts, the planned GX launcher did not proceed to flight. After the government decision, IHI determined in January 2010 that Galaxy Express should be dissolved. The company was disbanded around March 2010. IHI recorded a one-off accounting loss of 11.3 billion yen in connection with the dissolution, according to the cited reference material. Galaxy Express consequently remained a defunct development venture and never became a launch operator or commercial satellite-launch provider.

• 2010

  Company dissolved

  [1]GX (rocket)en.wikipedia.org

  IHI moved to dissolve Galaxy Express, and the company disbanded around March.

• 2009

  GX program cancelled

  [1]GX (rocket)en.wikipedia.org

  The Japanese government cancelled the GX project in December, while LNG propulsion research was expected to continue elsewhere.

• 2008

  Cancellation considered

  [1]GX (rocket)en.wikipedia.org

  The Space Development Committee reviewed whether the GX program should be cancelled amid cost and development concerns.

• 2007

  Full-scale second-stage engine test

  [1]GX (rocket)en.wikipedia.org

  JAXA reported a successful test firing of a full-scale engine intended for the LNG/LOX-powered second stage.

• 2003

  GX name adopted

  [1]GX (rocket)en.wikipedia.org

  The project moved from its earlier J-II and J1-Upgrade designations to the GX name in January.

• 2001

  Galaxy Express Corporation established

  [1]GX (rocket)en.wikipedia.org

  GALEX was established on 27 March as a Japanese company intended to develop the GX rocket.

A Japanese public-private aerospace venture positioned around the development of a commercially competitive, medium-class expendable launch vehicle and novel LNG/LOX propulsion technology.

• Expendable launch vehicle

  GX rocket

  The GX was a proposed two-stage orbital rocket intended to compete in the commercial satellite-launch sector. Its planned first stage was based on the Atlas Common Core Booster, while its second stage was to be newly developed by IHI. The second stage would have used liquefied natural gas and liquid oxygen, giving the vehicle an unusual propulsion architecture. The rocket was never completed as an operational launcher and was cancelled by the Japanese government in 2009.

• Rocket propulsion system

  GX second-stage engine

  The proposed GX second-stage engine was designed to burn liquefied natural gas with liquid oxygen. JAXA supported its development and reported a full-scale test firing in 2007. The engine program was halted as part of the wider cancellation of GX, although LNG propulsion development was expected to continue in other projects.

• 2010

  IHI dissolves Galaxy ExpressOther

  Background

  The company existed primarily to develop the GX vehicle, whose government-backed program had been cancelled.

  Action taken

  IHI determined to disband Galaxy Express in January, with dissolution occurring around March.

  Aftermath

  The project company ceased operations. The cited material reports a one-off accounting loss of 11.3 billion yen associated with the dissolution.

  One-off accounting loss. 11.3 billion yen loss (2010 dissolution)

  Source

• 2009

  Government cancels the GX development programStrategy

  Background

  The project faced rising cost concerns, repeated technical reviews, and uncertainty over its launch configuration and commercial prospects. A government reform review had recommended stopping funding for the second-stage engine.

  Action taken

  The Japanese government cancelled the GX project in December 2009. LNG propulsion development was left to continue through other projects.

  Aftermath

  Galaxy Express was dissolved around March 2010, and the planned launcher never entered service.

  Source

1. 1GX (rocket)en.wikipedia.org