Long March 4B

Long March 4B
	Long March 4B launching CBERS-2 in 2003
Function	Launch vehicle
Manufacturer	SAST
Country of origin	China
Cost per launch	US$50 million (2006)
Size
Height	44.1 m (145 ft)
Diameter	3.35 m (11.0 ft)
Mass	249,200 kg (549,400 lb)
Stages	3
Capacity
Payload to LEO
Mass	4,200 kg (9,300 lb)
Payload to SSO
Mass	2,800 kg (6,200 lb)
Payload to GTO
Mass	1,500 kg (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; Xichang, LA-3;
Total launches	53
Success(es)	52
Failure(s)	1
First flight	10 May 1999
Last flight	29 May 2025 (most recent)
First stage
Height	27.91 m (91.6 ft)
Diameter	3.35 m (11.0 ft)
Propellant mass	182,000 kg (401,000 lb)
Powered by	4 YF-21C
Maximum thrust	2,961.6 kN (665,800 lbf)
Specific impulse	2,550 m/s (8,400 ft/s)
Propellant	N2O4 / UDMH
Second stage
Height	10.9 m (36 ft)
Diameter	3.35 m (11.0 ft)
Propellant mass	52,700 kg (116,200 lb)
Powered by	1 YF-24C; (1 x YF-22C (Main)); (4 x YF-23C (Vernier))
Maximum thrust	742.04 kN (166,820 lbf) (Main); 47.1 kN (10,600 lbf) (Vernier)
Specific impulse	2,942 m/s (9,650 ft/s) (Main); 2,834 m/s (9,300 ft/s) (Vernier)
Propellant	N2O4 / UDMH
Third stage
Height	14.79 m (48.5 ft)
Diameter	2.9 m (9 ft 6 in)
Propellant mass	14,000 kg (31,000 lb)
Powered by	2 YF-40
Maximum thrust	100.85 kN (22,670 lbf)
Specific impulse	2,971 m/s (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 expendable orbital launch vehicle. Launched from Launch Complex 1 at the Taiyuan Satellite Launch Center, it is a 3-stage launch vehicle, used mostly to place satellites into low Earth orbit and Sun-synchronous orbits. It was first launched on 10 May 1999, with the FY-1C weather satellite, which would later be the target in the 2007 Chinese anti-satellite missile test.

Quick facts Function, Manufacturer ...

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

[1]

[2]

[3]

[4]

Flight number	Serial number	Date and time (UTC)	Launch site	Payload	Orbit	Result
1	Y2	10 May 1999 01:33	Taiyuan LA-7	Fengyun 1C Shijian 5	SSO	Success
2	Y1	14 October 1999 03:15	Taiyuan LA-7	CBERS-1 SACI-1	SSO	Success
3	Y3	1 September 2000 03:25	Taiyuan LA-7	Ziyuan II-01	SSO	Success
4	Y5	15 May 2002 01:50	Taiyuan LA-7	Fengyun 1D HaiYang-1A	SSO	Success
5	Y6	27 October 2002 03:17	Taiyuan LA-7	Ziyuan II-02	SSO	Success
6	Y4	21 October 2003 03:16	Taiyuan LA-7	CBERS-2 Chuangxin 1-01	SSO	Success
7	Y7	8 September 2004 23:14	Taiyuan LA-7	Shijian 6-01A Shijian 6-01B	SSO	Success
8	Y8	6 November 2004 03:10	Taiyuan LA-7	Ziyuan II-03	SSO	Success
9	Y16	23 October 2006 23:34	Taiyuan LA-7	Shijian 6-02A Shijian 6-02B	SSO	Success
10	Y17	19 September 2007 03:26	Taiyuan LA-7	CBERS-2B	SSO	Success
11	Y22	25 October 2008 01:15	Taiyuan LA-9	Shijian 6-03A Shijian 6-03B	SSO	Success
12	Y20	15 December 2008 03:22	Taiyuan LA-9	Yaogan 5	SSO	Success
13	Y23	6 October 2010 00:49	Taiyuan LA-9	Shijian 6-04A Shijian 6-04B	SSO	Success
14	Y14	15 August 2011 22:57	Taiyuan LA-9	HaiYang-2A	SSO	Success
15	Y21	9 November 2011 03:21	Taiyuan LA-9	Yaogan 12 Tianxun 1	SSO	Success
16	Y15	22 December 2011 03:26	Taiyuan LA-9	Ziyuan I-02C	SSO	Success
17	Y26	9 January 2012 03:17	Taiyuan LA-9	Ziyuan 3-01 VesselSat-2	SSO	Success
18	Y12	10 May 2012 07:06	Taiyuan LA-9	Yaogan 14 Tiantuo 1	SSO	Success
19	Y25	25 October 2013 03:50	Jiuquan LA-4/SLS-2	Shijian 16-01	LEO	Success
20	Y10	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	Y27	19 August 2014 03:15	Taiyuan LA-9	Gaofen 2 BRITE-PL2 (Heweliusz)	SSO	Success
22	Y28	8 September 2014 03:22	Taiyuan LA-9	Yaogan 21 Tiantuo 2	SSO	Success
23	Y32	7 December 2014 03:26	Taiyuan LA-9	CBERS-4	SSO	Success
24	Y29	27 December 2014 03:22	Taiyuan LA-9	Yaogan 26	SSO	Success
25	Y30	26 June 2015 06:22	Taiyuan LA-9	Gaofen 8	SSO	Success
26	Y24	8 November 2015 07:06	Taiyuan LA-9	Yaogan 28	SSO	Success
27	Y33	30 May 2016 03:17	Taiyuan LA-9	Ziyuan 3-02 ÑuSat-1/-2	SSO	Success
28	Y35	29 June 2016 03:21	Jiuquan LA-4/SLS-2	Shijian 16-02	LEO	Success
29	Y31	15 June 2017 03:00	Jiuquan LA-4/SLS-2	HXMT ÑuSat-3 Zhuhai-1	LEO	Success
30	Y37	31 July 2018 03:00	Taiyuan LA-9	Gaofen 11-01	SSO	Success
31	Y34	24 October 2018 22:57	Taiyuan LA-9	Haiyang-2B	SSO	Success^[6]
32	Y36	29 April 2019 22:52	Taiyuan LA-9	Tianhui-2-01 A/B	SSO	Success
33	Y39	12 September 2019 03:26	Taiyuan LA-9	Ziyuan I-02D	SSO	Success
34	Y38	3 November 2019 03:22	Taiyuan LA-9	Gaofen 7 Xiaoxiang 1-08	SSO	Success
35	Y44	20 December 2019 03:22	Taiyuan LA-9	CBERS-4A ETRSS-1	SSO	Success
36	Y43	3 July 2020 03:10	Taiyuan LA-9	Gaofen Multi-Mode BY-70-2	SSO	Success
37	Y45	25 July 2020 03:13	Taiyuan LA-9	Ziyuan 3-03 Tianqi 10 NJU-HKU 1	SSO	Success
38	Y46	7 September 2020 05:57	Taiyuan LA-9	Gaofen 11-02	SSO	Success
38	A booster presumably coming from this launch fell near populated areas.^[7]^[8]
39	Y41	21 September 2020 05:40	Jiuquan LA-4/SLS-2	Haiyang-2C	LEO	Success
40	Y42	27 September 2020 03:23	Taiyuan LA-9	Huanjing-2A Huanjing-2B	SSO	Success
41	Y49	8 April 2021 23:01	Taiyuan LA-9	Shiyan 6-03	SSO	Success
42	Y48	19 May 2021 04:03	Jiuquan LA-4/SLS-2	Haiyang-2D	LEO	Success
43	Y50	18 August 2021 22:32	Taiyuan LA-9	Tianhui-2 02A Tianhui-2 02B	SSO	Success
44	Y52	20 November 2021 01:51	Taiyuan LA-9	Gaofen 11-03	SSO	Success
45	Y47	10 December 2021 00:11	Jiuquan LA-4/SLS-2	Shijian-6 05A Shijian-6 05B	SSO	Success
46	Y40	4 August 2022 03:08	Taiyuan LA-9	TECIS Minxing Shaonian Jiaotong-4	SSO	Success
47	Y55	27 December 2022 07:37	Taiyuan LA-9	Gaofen 11-04	SSO	Success
48	Y51	16 April 2023 01:36	Jiuquan LA-4/SLS-2	Fengyun 3G	LEO	Success
49	Y58	19 July 2024 03:03	Taiyuan LA-9	Gaofen 11-05	SSO	Success
50	Y72	16 August 2024 07:35	Xichang LA-3	Yaogan 43-01A/B/C/D/E/F/G/H/I	LEO	Success
51	Y73	3 September 2024 01:22	Xichang LA-3	Yaogan 43-02A/B/C/D/E/F	LEO	Success
52	Y53	13 November 2024 22:42	Taiyuan LA-9	Haiyang 4A	SSO	Success
53	Y62	29 May 2025 04:12	Jiuquan SLS-2	Shijian-26	SSO	Success
Source: Gunter's Space Page^[9]

Long March 4B

Launch statistics

List of launches

See also

References

Wikiwand - on