Jiuquan Satellite Launch Centre (Base 20) is a People's Republic of China space vehicle launch facility (spaceport) in the Gobi desert in Gansu Province located (41.10deg N, 100.30deg E) about 1,600 km from Beijing.
It was founded in 1958, making it China's first spaceport of three, compared with the later Taiyuan Satellite Launch Centre and Xichang Satellite Launch Centre. Jiuquan is usually used to launch vehicles into lower and medium orbits, as well as medium- to long-range missiles.
The launch centre has been the focus of many of China's successful ventures into space, including their first satellite Dong Fang Hong 1 in 1970, and their first manned space mission Shenzhou 5 on October 15, 2003.
NORTH LAUNCH SITE Becoming operational in the early 1960s, the north launch site (code-name LA2) is where most of JSLC's space launches occurred before the 1990s. The launch site includes the north launch centre and the north technical centre. This launch site is mainly used for low earth orbit (LEO) missions using CZ-2C and CZ-2D launch vehicles.
Facilities in the north technical centre include: Launch Vehicle & Spacecraft Processing Building (BLS) - BLS is used for the transit of launch vehicles and spacecraft, as well as the fuelling of the spacecraft. The building comprises a processing hall (BL & BS2), a spacecraft fuelling hall (BS3), unit testing workshops, and power-supply, gas-supply, air-conditioning and firing alarm and protection systems. The BLS is 140m long with total area of 4,587 square metres.
Solid Rocket Motor Processing Building (BM) - BM is used for solid rocket motor (SRM) assembly, testing and short-term storage. The BM includes SRM processing hall, SRM storage units, testing units, and air-conditioning, power-supply, fire protection and alarm, and communications systems. Facilities in the north launch centre include: Mobile Service Tower - The 11-floor, 55.23m high mobile service tower provides an operating platform for launch vehicle erection, and launch vehicle and spacecraft integration. It comprises tower body, gantry crane, elevator, operating platform, and spacecraft workshop. The tower moves between two umbilical towers on rail tracks. Umbilical Tower - The 45m high umbilical tower is used for the fuelling of the launch vehicle, and the final checkout of launch vehicles and spacecraft before launch. It is fitted with an elevator with a maximum load capability of 1,000 kg, 5 floors of rotating platform, and 2 floors of roll-over platforms. Launch Control Bunker - The launch control bunker is located underground, comprising launch control unit, spacecraft testing control unit, launch vehicle testing control unit, and power supply, air conditioning, and communications. All tests and launch activities are remotely controlled by this centre.
SOUTH LAUNCH SITE Construction work of the south launch site (code-name: LA4) began on 3 July 1994 to support China's manned spaceflight programme (Project 921). In 1998 the new south launch site became operational. The site consists of the south launch centre and the south technical centre. The south launch site has a single mobile launch pad specially designed to launch CZ-2F launch vehicle carrying Shenzhou spaceship.
Facilities in the south technical centre include: Launch Vehicle Horizontal Transit Building (BL1) - BL1 is used for the transit of the launch vehicle and its ground equipment. It mainly includes a 78m X 240m LV horizontal processing hall, a 42m X 30m transit workshop, and unit testing workshops. Launch Vehicle Vertical Processing Building (BLS) - BLS is used for launch vehicle integration, launch vehicle and spacecraft integration, launch vehicle vertical checkouts, and launch vehicle and spacecraft combined checkouts. It includes two high-bays and two 26.8m X 28m X 81.6m vertical-processing halls, each equipped with 13-floor moveable platform and a 50-tonne crane. The two-processing-hall design implies that the facility is potentially capable of prepare for two launches in a relatively short period (3-4 days). Spacecraft Non-Hazardous Operation Building (BS2) - BS2 is used for conventional testing and integration processes of spacecraft. Spacecraft Hazardous Operation Building (BS3) - BS3 is used for hazardous assembly operations of the spacecraft including mono-propellant or bi-propellant fuelling, the integration of the spacecraft and the fairing, spinning balance and weighing. Solid Rocket Motor Checkout and Processing Building (BM) - BM is used for the storage, assembly, pyrotechnics checkout, and X-ray checkout of the solid-rocket motors (SRMs). Launch Control Centre (LCC) - LCC is located beside BLS, and is connected with Launch Tower and BS2 via cables and radio communications. LCC is mainly used for remote command and control of launch vehicle and spacecraft tests, examinations, checkouts, and launches. It also coordinates communications between the south technical centre and south launch centre. Other functions include medical assistance and weather forecast. Pyrotechnics Storage & Testing Units (BP1 & BP2) - BP1 and BP2 are used for the storage and testing of launch vehicle and spacecraft pyrotechnics. BP1 and BP2 are equipped with power-supply, anti-lightning and grounding and fire-extinguish systems. The south launch centre 1.5 km away from the south technical centre. Facilities in the south launch centre include: Umbilical Tower - The umbilical tower is a 75m high, 11-floor fixed steel structure which supports electrical connections, gas pipelines, liquid pipelines, as well as their connectors for both launch vehicle and spacecraft. The umbilical tower has a rotating-platform system, with maximum load capability of 15t for each single platform. There is also a rotary crane on the top of the umbilical tower. The umbilical tower is equipped with a conventional elevator and an explosion-proof elevator with operating speeds of 1.75m/s and 1.0m/s respectively. The max loading capability of these elevators is 1,000kg. Mobile Launch Pad - The mobile launch pad is used for launch vehicle vertical integration and checkouts in BLS, transporting the launch vehicle/spacecraft from BLS to the launch area vertically, and locking itself beside the umbilical tower. The mobile launch pad can also vertically adjust the position of the launch vehicle to make the preliminary aiming. The ignition flame can be exhausted through the mobile launch pad. The mobile launch pad weighs 750 tonnes with dimensions of 24.4 m x 21.7 m x 8.4 m. It moves on a 20m wide rail track and has a top speed of 28m/min. It takes the mobile launch pad about 40 minutes to move the launch vehicle/spacecraft from BLS to umbilical tower (1.5km).
Underground Equipment Units- Located under the umbilical tower, the 800 square metres underground equipment units includes power-supply unit, equipment unit, power distribution unit, optic cable terminal unit. The vertical processing building (BLS), military code-name 920-520, is the world's tallest single-floor concrete building. It also has the world's tallest (86.1m above the ground) and heaviest (13,000 tonnes) concrete roof. All important buildings, including the BLS, spacecraft operation buildings, umbilical tower, and underground equipment units are air-conditioned to cleanness class 100,000.
China today launched another science experimental satellite into orbit, atop a Long March 2D carrier rocket from the Jiuquan Satellite Launch Centre in northwest China's Gansu Province.
The Shijian-7 (SJ-7) satellite lifted off at 6:40 a.m. local time (0410 IST) and entered orbit normally 12 minutes later. The SJ-7 Satellite was designed to monitor space environment and conduct other special scientific and technological experiments with a three-year life span.
The launch is the 85th mission taken by the Long March carrier rockets since 1970 and the 43rd consecutive successful one since October 1996. The first SJ Satellite was launched in 1971.
