March 3B will launch Tianlian 2-01 – NASASpaceFlight.com



China has launched a new communications satellite to provide real-time communications between visiting ground stations and land control stations. Tianlian 2-01 was launched at 15:50 UTC on Saturday from LC2 Launch Center at Xichang Satellite Address Center using the Long March-3B / G2 opening vehicle (Chang Zheng-3B / G2).

Satellites Chinese detection and data relay were developed by the Chinese Academy of Space Technology (CAST) and resembled the American cordial detection system and the data Sat-Data (TDRSS) concept. The system is designed to support close contact between a space space and a control of the land, and supports space and space-based space stations and ships. T to support future space projects.

This publication was already due in 2018, but was pushed back to 2019. The Tianlian-2 satellite series represents the second generation of the string of satellite. Developed by the China Academy of Space Technology (CAST), the satellite is based on the DFH-4 satellite site.

DFH-4 is the third generation communication satellite bus in China with high power, strong pay capacity and extended service life. It includes a model of promotion, service models and solar ferry vessels.

The dimensions are 2360mm × 2100mm × 3600mm, with a lifoff mass of 5,200 kg. Sun Energy Power is 10.5 kW (EOL) and the power of the liquidator is 8 kW. Crossings C, Ku, Ka and L can be reached on the platform. It uses the 3-axis method of fixing and its retention at its west / east position ± 0.05 ° and north / south ± 0.05 °. Precision Precision Antenna < 0.1 °. Long-term service is expected to last in 15 years.

The first series of Tianlian lights have been launched between 2008 and 2016, supporting different forms of enterprise and especially the ones associated with the Chinese space program. Satellites were based on the CASTH-3 satellite platform at CAST.

The first issue of the series, Tianlian 1-01 (32779 2008-019A) was launched on April 25, 2008, using the first launch ship Long March-3C – CZ-3C Chang Zheng. -3C (B1). The booklet was published on 15: 35: 07.852UTC from the LC2 opening site at Xichang Satellite Center. Tianlian 1-02 (37737 2011-032A) continued on 11th July 2011 with the satellite relayed by the Long March (Y8) at 15: 41: 03.700UTC, also from the opening site LC2.

Tianlian 1-03 (38730 2012-040A) was launched at 15: 43: 03.769UTC on 25 July 2012, using the Long March-3C (Y9) and the fourth – and finally – the fourth. first generation, Tianlian 1- 04 (41869 2016-072A), was launched on 22 November 2016, using a rocket Long March-3C / G2 (Y13) at 15: 24: 04.194UTC.

In order to meet the demand of an international marketing market, particularly for high-power and heavy communications satellites, development of the Long March-3B (Chang Zheng-3B) starter began in 1986 based on cutting edge technology where vehicles were reliant. Launched in the Long March.

The March 3B Ship

Developed from Chang Zheng-3A, the Chang Zheng-3B is currently the most powerful opening vehicle of a Chinese place fleet.

The CZ-3B includes larger distribution propellant tanks, improved computer systems, 4.2m diameter pay balance and a four-size boot load at the primary level which will aid in first level of publication.

The rocket is capable of launching 11,200 kg satellite with the lower hemisphere of the Earth or 5,500 kg as a star for a geosynchronous movement.

The launch CZ-3B / G2 (enhanced) car from CZ-3B was developed with the first basic level and a larger increase, extending the GTO capacity to 5,500kg.

On 14 May 2007, the first tour of CZ-3B / G2 was successfully completed, and NigcomSat-1 was issued correctly to a pre-determined circuit. With the GTO capacity of 5,500kg, CZ-3B / G2 is specifically for the launch of the heavy GEO communications satellite.

Engines at lofting Nigcomsat-1R Ship March 3B into orbit.

The rocket structure also connects all of its sub-systems and comprises four upwards, first, second, third level, and pay balance.

The first two phases, in addition to the four strap-on-shoes, use hypergolic fuel (N2O4 / DMU) and the third use of cryogenic fuel (LOX / LH2). The total length of CZ-3B is 54.838 meters, with the primary level being 3.35 meters and the third level at 3.00 meters.

For the first time, the CZ-3B uses a YF-21C device with a 2,961.6 kN swell and a special boost of 2,556.5 Ns / kg. The first diameter is 3.35 m and the length is 23.272 m.

Each strap is fitted with an YF-25 engine with a 740 740 kN drive and a specific strength of 2,556.2 Ns / kg. The strap-on diameter is 2.25 m and the length of the strap is 15.326 m.

The second stage is equipped with YF-24E (main engine – 742 kN / 2,922.57 Ns / kg; four ierier engines – 47.1 kN / 2,910.5 Ns / kg per kg). The second level diameter is 3.35 m and the length of 12.920 m.

The third level equipped with YF-75 engine is 167.17 kN and has a specific strength of 4,295 Ns / kg. The diameter of CZ-3B is 4.00 meters and measures 9.56 meters.

CZ-3B also utilizes new Yuanzheng-1 (“Expedition-1 ″) that uses a small U kMH / N2O4 6.5 kN silence device with a specific vibration of 3,092 m / s. The maximum level is capable of carrying two burns, with a life of 6.5 hours, and ability to meet a variety of different expectations. This high level has not been used in this publication.

A typical series of aircraft for the CZ-3B / G2 sees it launched over 10 seconds after sawing from the Xichang Satellite Flame center.

Forts closed 2 minutes and 7 seconds after flow, split from the first stage at second level. The first step is done at 1 minute 25 seconds on the flight.

There is a division between first and second stages at 1 minute 26 seconds, after a split of T + 3 minutes 35 seconds. Engine engine level 2 of 326 seconds flies, and the vernier engine then stopped after 15 seconds.

A division between second and third levels and lighting the third level takes place once after the closure of the ierier engines in phase two. The first stream of the third level lasts for 4 minutes and 44 seconds.

After the end of the first burning phase the third stage follows a coastal path which ends at T + 20 minutes and 58 seconds with the third level starting on the second stream. This activity will be 179 seconds. After the end of the third level, the beginner will introduce a set of 20 movements. Normally, a spaceship space is set at T + 25 minutes 38 seconds after the launch.

Xichang Satellite Address Center is located in the Province of Sichuan, south-west China, and is the nation's launch site for geosynchronous orbital publication.

With two starting plates (LC2 and LC3), the site has a dedicated railway and rail line direct to the site.

Launch site Xichang

The Control and Control Center of seven south-west kilometers is the starter, delivers aviation and safety management at the launch and publication.

Other Satellite Labs at Satellite Lagoon Satellite Center are the Laggan Control Center, propellant fuel systems, systems of communication for ordering, telephone and user data communication, and support equipment for meteorological analysis and prediction.

The first edition from Xichang was made at 12: 25UTC on 29 January, 1984, when the Chang Zheng-3 (Y1) was launched in the Shiyan Weixing internet communications (14670 1984-008A). possible to be there.


Source link