|The J-1 launch vehicle is a three-stage solid fuel rocket
with the ability to launch approximately 2,200 lbs into low earth obit. It was developed
in response to expected demands for the launch of smaller satellites.
The J-1 is the first launch vehicle in Japan to be
developed by combining existing rockets. It combines the solid rocket booster (SRB) of the
H-2, developed by NASDA, with the upper stage of the M-3S II developed by the ISAS.
NASDA had hoped that using existing systems would provide a
short development period and a low cost launch vehicle. In the end, this did not
happen. After a report by the Management and Coordination Agency showed that the J-1
development program cost more than similar projects in other countries, NASDA decided to
discontinue the current J-1 program. There will be one more flight of the J-1 in the
summer of 2001.
NASDA has set its sites on developing a more capable rocket
using less expensive parts imported from overseas. This J-1 Upgrade (J-1A) launch vehicle
is currently under study and will demonstrate state-of-the-art space transportation
technologies required for future Reusable Launch Vehicles as well as to meet the demands
for small and medium sized satellites. The J-1A vehicle, which employs a single Russian
NK-33 first stage engine and Lockheed Martin Atlas derived tanks, will be able to place
approximately 7,700 lbs into a 31 degree inclination, 100 nmi orbit and 2200 lbs into a
sun-synchronous orbit. The first test flight is planned for 2003.
||National Space Development
Agency of Japan (NASDA)
|Point of Contact
||NASDA Office of Space
Hamamatsu-cho World Trade Center Building 26F
2-4-1 Hamamatsu-cho, Minato-ku Tokyo, 108-8060 Japan
Tel: + 81.3.3438.6465
Fax: + 81.3.5402.6527
(30.2 deg. N Latitude)