Long March 4B

	Long March 4B
Function	Carrier rocket
Manufacturer	SAST
Country of origin	China
Cost per launch	US$50 million (2006) [1]
Size
Height	44.1 metres (145 ft)
Diameter	3.35 metres (11.0 ft)
Mass	249,200 kilograms (549,400 lb)
Stages	3
Capacity
Payload to LEO
Mass	4,200 kilograms (9,300 lb)
Payload to SSO
Mass	2,800 kilograms (6,200 lb)
Payload to GTO
Mass	1,500 kilograms (3,300 lb)
Associated rockets
Family	Long March
Derivative work	Long March 4C
Launch history
Status	Active
Launch sites	Taiyuan, LA-7 and LA-9; Jiuquan, LA-4/SLS-2;
Total launches	37
Success(es)	36
Failure(s)	1
First flight	10 May 1999
Last flight	25 July 2020
First stage
Height	27.91 m
Diameter	3.35 m
Propellant mass	182,000 kilograms (401,000 lb)
Powered by	4 YF-21C
Maximum thrust	2,961.6 kilonewtons (665,800 lbf)
Specific impulse	2,550 metres per second (8,400 ft/s)
Propellant	N2O4 / UDMH
Second stage
Height	10.9 m
Diameter	3.35 m
Propellant mass	52,700 kilograms (116,200 lb)
Powered by	1 YF-24C; (1 x YF-22C (Main)); (4 x YF-23C (Vernier))
Maximum thrust	742.04 kilonewtons (166,820 lbf) (Main); 47.1 kilonewtons (10,600 lbf) (Vernier)
Specific impulse	2,942 metres per second (9,650 ft/s) (Main); 2,834 metres per second (9,300 ft/s) (Vernier)
Propellant	N2O4 / UDMH
Third stage
Height	14.79 m
Diameter	2.9 m
Propellant mass	14,000 kilograms (31,000 lb)
Powered by	2 YF-40
Maximum thrust	100.85 kilonewtons (22,670 lbf)
Specific impulse	2,971 metres per second (9,750 ft/s)
Propellant	N2O4 / UDMH
	[edit on Wikidata]

The Long March 4B (Chinese: 长征四号乙火箭), also known as the Chang Zheng 4B, CZ-4B and LM-4B is a Chinese orbital carrier rocket. Launched from Launch Complex 1 at the Taiyuan Satellite Launch Center, it is a 3-stage rocket, used mostly to place satellites into low Earth and sun-synchronous orbits. It was first launched on 10 May 1999, with the FY-1C weather satellite, which would later be used in the 2007 Chinese anti-satellite missile test.

The Chang Zheng 4B experienced its only launch failure on 9 December 2013, with the loss of the CBERS-3 satellite.^[4]

List of launches

Flight number	Date and time (UTC)	Launch site	Payload	Orbit	Result
1	10 May 1999 01:33	Taiyuan LA-7	Fengyun 1C Shijian 5	SSO	Success
2	14 October 1999 03:15	Taiyuan LA-7	CBERS-1 SACI-1	SSO	Success
3	1 September 2000 03:25	Taiyuan LA-7	Ziyuan II-01	SSO	Success
4	15 May 2002 01:50	Taiyuan LA-7	Fengyun 1D HaiYang-1A	SSO	Success
5	27 October 2002 03:17	Taiyuan LA-7	Ziyuan II-02	SSO	Success
6	21 October 2003 03:16	Taiyuan LA-7	CBERS-2 Chuangxin 1-01	SSO	Success
7	8 September 2004 23:14	Taiyuan LA-7	Shijian 6A Shijian 6B	SSO	Success
8	6 November 2004 03:10	Taiyuan LA-7	Ziyuan II-03	SSO	Success
9	23 October 2006 23:34	Taiyuan LA-7	Shijian 6C Shijian 6D	SSO	Success
10	19 September 2007 03:26	Taiyuan LA-7	CBERS-2B	SSO	Success
11	25 October 2008 01:15	Taiyuan LA-9	Shijian 6E Shijian 6F	SSO	Success
12	15 December 2008 03:22	Taiyuan LA-9	Yaogan 5	SSO	Success
13	6 October 2010 00:49	Taiyuan LA-9	Shijian 6G Shijian 6H	SSO	Success
14	15 August 2011 22:57	Taiyuan LA-9	HaiYang-2A	SSO	Success
15	9 November 2011 03:21	Taiyuan LA-9	Yaogan 12 Tianxun 1	SSO	Success
16	22 December 2011 03:26	Taiyuan LA-9	Ziyuan I-02C	SSO	Success
17	9 January 2012 03:17	Taiyuan LA-9	Ziyuan III-01 VesselSat-2	SSO	Success
18	10 May 2012 07:06	Taiyuan LA-9	Yaogan 14 Tiantuo 1	SSO	Success
19	25 October 2013 03:50	Jiuquan LA-4/SLS-2	Shijian 16-01	LEO	Success
20	9 December 2013 03:26	Taiyuan LA-9	CBERS-3	SSO	Failure
20	One of the two third-stage engines shut down prematurely, so that the satellite failed to reach orbit. The cause was traced to foreign debris that blocked the engine's fuel intake.^[5]
21	19 August 2014 03:15	Taiyuan LA-9	Gaofen 2 BRITE-PL2 (Heweliusz)	SSO	Success
22	8 September 2014 03:22	Taiyuan LA-9	Yaogan 21 Tiantuo 2	SSO	Success
23	7 December 2014 03:26	Taiyuan LA-9	CBERS-4	SSO	Success
24	27 December 2014 03:22	Taiyuan LA-9	Yaogan 26	SSO	Success
25	26 June 2015 06:22	Taiyuan LA-9	Gaofen 8	SSO	Success
26	8 November 2015 07:06	Taiyuan LA-9	Yaogan 28	SSO	Success
27	30 May 2016 03:17	Taiyuan LA-9	Ziyuan 3-02 ÑuSat-1/-2	SSO	Success
28	29 June 2016 03:21	Jiuquan LA-4/SLS-2	Shijian 16-02	LEO	Success
29	15 June 2017 03:00	Jiuquan, LA-4/SLS-2	HXMT ÑuSat-3 Zhuhai-1	SSO	Success
30	31 July 2018 03:00	Taiyuan LA-9	Gaofen 11	SSO	Success
31	24 October 2018 22:57	Taiyuan LA-9	HaiYang-2B	SSO	Success^[6]
32	29 April 2019 22:52	Taiyuan LA-9	Tianhui-2-01 A/B	SSO	Success
33	12 September 2019 03:26	Taiyuan LA-9	Ziyuan I-02D	SSO	Success
34	3 November 2019 03:22	Taiyuan LA-9	Gaofen 7	SSO	Success
35	20 December 2019 03:22	Taiyuan LA-9	CBERS-4A ETRSS-1	SSO	Success
36	3 July 2020 03:10	Taiyuan LA-9	Gaofen BY-2	SSO	Success
37	25 July 2020 03:13	Taiyuan, LA-9	Ziyuan 3-03 Tianqi 10 Lobster Eye 1	SSO	Success
Source: Gunter's Space Page^[7]

References

^ Brian Harvey (2013). China in Space: The Great Leap Forward. Springer Science & Business Media. p. 96. ISBN 978-1-4614-5043-6.
^ ^a ^b Mark Wade. "CZ-4B". Encyclopedia Astronautica. Archived from the original on 21 March 2008. Retrieved 27 April 2008.
^ ^a ^b ^c Gunter Krebs. "CZ-4B (Chang Zheng-4B)". Gunter's Space Page. Retrieved 27 April 2008.
^ Boadle, Anthony. "China-Brazil satellite launch fails, likely fell back to Earth". Reuters. Retrieved 10 December 2013.
^ de Selding, Peter B. (3 March 2014). "China Great Wall Pins December Long March Launch Failure on Fuel-line Clog". SpaceNews. Retrieved 10 August 2015.
^ Barbosa, Rui C. (24 October 2018). "Chinese Long March 4B lofts Haiyang-2B". NASASpaceFlight.com. Retrieved 24 October 2018.
^ Krebs, Gunter. "CZ-4B (Chang Zheng-4B)". Gunter's Space Page. Retrieved 25 October 2018.

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[1] Brian Harvey (2013). China in Space: The Great Leap Forward. Springer Science & Business Media. p. 96. ISBN 978-1-4614-5043-6.

[EA-2] Mark Wade. "CZ-4B". Encyclopedia Astronautica. Archived from the original on 21 March 2008. Retrieved 27 April 2008.

[GSP-3] Gunter Krebs. "CZ-4B (Chang Zheng-4B)". Gunter's Space Page. Retrieved 27 April 2008.

[4] Boadle, Anthony. "China-Brazil satellite launch fails, likely fell back to Earth". Reuters. Retrieved 10 December 2013.

[5] Selding, Peter B. (3 March 2014). "China Great Wall Pins December Long March Launch Failure on Fuel-line Clog". SpaceNews. Retrieved 10 August 2015.

[6] Barbosa, Rui C. (24 October 2018). "Chinese Long March 4B lofts Haiyang-2B". NASASpaceFlight.com. Retrieved 24 October 2018.

[7] Krebs, Gunter. "CZ-4B (Chang Zheng-4B)". Gunter's Space Page. Retrieved 25 October 2018.

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v t e Orbital launch systems
List of orbital launch systems Comparison of orbital launch systems
Current	Angara 1.2 A5 Atlas V Ceres 1 1S Chollima-1 Electron Falcon 9 Block 5 Falcon Heavy Firefly Alpha Gravity-1 GSLV H-IIA H3 Hyperbola-1 Jielong 1 3 KAIROS^† Kaituozhe 2 Kinetica 1 Kuaizhou 1 1A 11 Long March 2C 2D 2F 3A 3B/E 3C 4B 4C 5 5B 6 6A 7 7A 8 11 11H LVM3 Minotaur I IV V C Nuri OS-M1^† Pegasus XL Proton-M PSLV Qaem 100 Qased RS1^† Shavit 2 Simorgh SLS Block 1 Soyuz-2 2.1a / STA 2.1b / STB 2-1v SSLV Starship Tianlong-2 Unha Vega original C Vulcan Centaur Zhuque 2
In development	Antares 330 Ariane 6 Bloostar Cyclone-4M Epsilon S Eris Gravity-2 Hyperbola-2 Irtysh Kuaizhou 21 31 Long March 9 10 12 Miura 5 MLV Neutron New Glenn New Line 1 NGLV OS-M 2 4 Orbex Prime Pallas-1 Red Dwarf SLS Block 1B Block 2 Soyuz-7 Terran R Tianlong-3 VLM Vega E Zero Zhuque 3 Zuljanah
Retired	Antares 110 120 130^† 230 230+ Ariane 1 2 3 4 5 ASLV Athena I II Atlas B D E/F G H I II III LV-3B SLV-3 Able^† Agena Centaur Black Arrow Conestoga^† Delta A B C D E G J L M N 0100 1000 2000 3000 4000 5000 II III IV IV Heavy Diamant Dnepr Energia Epsilon Europa I^† II^† Falcon 1 Falcon 9 v1.0 v1.1 v1.2 "Full Thrust" Feng Bao 1 GSLV Mk I H-I H-II H-IIB Juno I Juno II Kaituozhe-1 Kosmos original 1 2/2I 3 3M Lambda 4S LauncherOne Long March 1 1D^† 2A 2E 3 3B 4A Mu 4S 3C 3H 3S 3SII V N1^† N-I N-II Naro-1 Paektusan^† Pilot-2^† R-7 Luna Molniya M L Polyot Soyuz original FG L M U U2 Soyuz/Vostok Sputnik Voskhod Vostok L K 2 2M R-29 Shtil' Volna^† Rocket 3 Safir 1 1A 1B Saturn I IB V Scout X-1 Blue Scout II^† X-2^† X-2M X-3 X-3M X-4 X-2B^† B A B-1 D-1 A-1 E-1 F-1 G-1 Shavit original 1 SLV Space Shuttle SPARK^† Sparta SS-520 Start-1 Terran 1^† Thor Able Ablestar 1 2 Agena A B D Burner 1 2 Delta DSV-2U Thorad-Agena SLV-2G SLV-2H Titan II GLV IIIA IIIB IIIC IIID IIIE 34D 23G CT-3 IV Tsyklon R-36-O original 2 3 Universal Rocket UR-500 Proton Proton-K Rokot Strela Vanguard VLS-1^† Zenit 2 2M 2FG 3SL 3SLB 3F Zhuque 1^†
Classes	Sounding rocket Small-lift launch vehicle Medium-lift launch vehicle Heavy-lift launch vehicle Super heavy-lift launch vehicle
This Template lists historical, current, and future space rockets that at least once attempted (but not necessarily succeeded in) an orbital launch or that are planned to attempt such a launch in the future Symbol ^† indicates past or current rockets that attempted orbital launches but never succeeded (never did or has yet to perform a successful orbital launch)

v t e Long March (rocket family)
Rockets	Feng Bao 1 Long March 1 1D Long March 2 2A 2C 2D 2E 2F Long March 3 3A 3B 3B/E 3C Long March 4 4A 4B 4C Long March 5 5B Long March 6 6A 6C Long March 7 7A Long March 8 Long March 9 Long March 10 Long March 11 Long March 12
Launch sites	Jiuquan Taiyuan Wenchang Commercial Xichang
Manufacturers	China Academy of Launch Vehicle Technology Shanghai Academy of Spaceflight Technology
Designers	Wang Xiji
List of Long March launches