Tag Archives: SS-520

Short circuit caused launch failure of Japanese mini-rocket

Japanese engineers now believe that the cause of the failure of that country’s test launch of a mini-rocket on January 15 was because of the failure of wiring insulation.

The agency said it believes the cladding of electric cables was damaged by the vibration and heat of nearby metal parts, leading the cables to directly touch the metal parts. As a result, a short circuit occurred and a data transmission device lost power, it said.

It is remarkable how much the language of this story reminds me of Soviet era press releases. Everything about it is designed to obscure the problem so that it will be difficult for outsiders to understand what happened.

From what I gather, the cables were not properly secured so that during launch they rubbed violently against some nearby sharp metal parts, which then cut the insulation and caused the short circuit. That they were not properly secured, a basic engineering requirement for any rocket, and that this announcement is written to obscure this fact, suggests once again that Japan’s space agency has some serious quality control problems that it is still not facing.

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Japanese SS-520 rocket launch scrubbed due to weather

The launch of Japan’s new small rocket, SS-520, was scrubbed today due to bad weather.

Japanese officials announced a few minutes before the launch that the flight would be postponed due to bad weather at the space base. Authorities did not immediately set a new launch date.

The SS-520-4 will try to become the smallest rocket to ever put an object in orbit. Its sole payload is the six-pound (three-kilogram) TRICOM 1 spacecraft, a CubeSat from the University of Tokyo designed for communications and Earth observation experiments. Standing 31 feet (9.5 meters) tall and spanning around 20 inches (52 centimeters) in diameter, the SS-520-4 will blast off from a rail launch system and head east over the Pacific Ocean, dropping its lower two stages and payload enclosure into the sea in the first few minutes of the flight.

Primarily funded by a $3.5 million budget provided by the the Japanese government’s Ministry of Economy, Trade and Industry, the SS-520-4 program is a one-off demonstration by Japan’s space agency, which aims to validate low-cost technology and launch operations procedures for a future “nano-launcher” to deploy tiny satellites in orbit on dedicated rides.

The last paragraph is disappointing, but not surprising considering that this rocket is entirely owned and built by the government, which like NASA, routinely builds things and then abandons them, no matter how useful they are. I hope that some private company grabs the design here and runs with it.

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Japan unveils new small rocket

The competition heats up: Japan will this week inaugurate a new rocket, the SS-520, designed to launch smallsats quickly and cheaply.

The rocket is small, only 10 meters tall and 30 centimeters in diameter, and was developed for less than $3.5 million. It was developed by JAXA, Japan’s space agency, as a vehicle to encourage the growth of that nation’s smallsat industry.

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