Soyuz-2.1b (14A14-1B), Fregat & Fregat-M

Russia

Description:

Soyuz-2.1b retains the upgrades introduced with the 2.1a and while replacing the third-stage RD-0110 with the more efficient RD-0124, an oxygen-rich staged-combustion engine, the engine increases specific impulse from 326 to 359 seconds (3.20 to 3.52 km/s). Although maximum thrust was slightly reduced from 298 to 294 kilonewtons (67,000 to 66,000 lbf), extended burn time with the same propellant load improved overall performance. The enhanced third stage significantly increased payload capability. From the Baikonur Cosmodrome, payload capacity to low Earth orbit rose from approximately 7,430 kilograms (16,380 lb) for the 2.1a to 8,670 kilograms (19,110 lb) for the 2.1b.

Technical Data:

Soyouz-2.1b sur le pas de tir n°4 du cosmodrome de Plesetsk, 20 février 2011.

Soyouz-2.1b/Fregat (Meteor-M 2, ST-type fairing).

Launch List:

Total Nr	Type Nr	Launch Vehicle	Serial Nr	Launch Date	L.Time	L. Site	ID Year	Payload	Comment
	1	Soyuz-2.1b/Fregat	P15000-001	27/12/2006	14:23:38	B, LC31/6	2006-063	COROT	Fregat= 001/S17
	1	Soyuz-2.1b	77057-145	26/07/2008	18:31:36	Pl, LC43/4	2008-037	Cosmos 2441 (Persona #1)
	2	Soyuz-2.1b/Fregat	15000-002	17/09/2009	15:55:07	B, LC31/6	2009-049	Meteor-M 1 + 6 sat
	1	Soyuz-2.1b/Fregat-M	77024-208	26/02/2011	03:07:15	Pl, LC43/4	2011-009	Cosmos 2471
	2	Soyuz-2.1b/Fregat-M	77024-209	2/10/2011	20:15:14	Pl, LC43/4	2011-055	Cosmos 2474	Fregat= 018/1045
	3	Soyuz-2.1b/Fregat-M	78031-219	28/11/2011	08:25:58	Pl, LC43/4	2011-071	Cosmos 2478	Fregat= 019/1046
	4	Soyuz-2.1b/Fregat-M	78075-164	23/12/2011	12:08:10	Pl, LC43/4	2011-F04	Meridian 5	Failure, Fregat= 006/1042
	5	Soyuz-2.1b/Fregat-M	78031-220	26/04/2013	05:23:41	Pl, LC43/4	2013-019	Cosmos 2485	Fregat= 021/1047
	2	Soyuz-2.1b	78031-215	7/06/2013	18:37:59	Pl, LC43/4	2013-028	Cosmos 2486
	3	Soyuz-2.1b	I15000-013	25/06/2013	17:28:48	B, LC31/6	2013-030	Resurs-P 1
	6	Soyuz-2.1b/Fregat-M	78085-168	23/03/2014	22:54:03	Pl, LC43/4	2014-012	Cosmos 2494
	7	Soyuz-2.1b/Fregat-M	T15000-023	14/06/2014	17:16:48	Pl, LC43/4	2014-032	Cosmos 2500
	8	Soyuz-2.1b/Fregat-M	L15000-011	8/07/2014	15:58:28	B, LC31/6	2014-037	Meteor-M 2 + 7 sat	Fregat= 011/1025
	9	Soyuz-2.1b/Fregat-M	G15000-026	30/11/2014	21:52:26	Pl, LC43/4	2014-075	Cosmos 2501	Fregat= 026/1044
	4	Soyuz-2.1b	78031-199	25/12/2014	03:01:13	Pl, LC43/4	2014-086	Cosmos 2502
	5	Soyuz-2.1b	L15000-009	26/12/2014	18:55:50	B, LC31/6	2014-087	Resurs-P 2
1	6	Soyuz-2.1b	76058-156	23/06/2015	16:44	Pl, LC43/4	2015-029	Cosmos 2506
	10	Soyuz-2.1b/Fregat-M	76012-227	17/11/2015	06:33:41	Pl, LC43/4	2015-066	Cosmos 2510	Fregat= 015/1033
	11	Soyuz-2.1b/Fregat-M	G15000-030	7/02/2016	00:21	Pl, LC43/4	2016-008	Cosmos 2514 (Uragan-M #44)
	7	Soyuz-2.1b	T15000-016	13/03/2016	18:56	B, LC31/6	2016-016	Resurs-P 3
	12	Soyuz-2.1b/Fregat-M		29/05/2016	08:44	Pl, LC-43/4	2016-032	Cosmos 2516 (Uragan-M #45)
	13	Soyuz-2.1b/Fregat-M		25/05/2017	06:34	Pl, LC-43/4	2017-027	Cosmos 2518
	14	Soyuz-2.1b/Fregat-M		22/09/2017	00:02	Pl, LC-43/4	2017-055	Cosmos 2522
	15	Soyuz-2.1b/Fregat-M		28/11/2017	05:41	Vo, LC-1S	2017-F05	Meteor-M 2-1
	8	Soyuz-2.1b	77069203	2/12/2017	10:43	Pl, LC-43/4	2017-076	Cosmos 2524 (Lotos-S1 #2)
	16	Soyuz-2.1b/Fregat-M		16/06/2018	21:46	Pl, LC-43/4	2018-053	Cosmos 2527
	9	Soyuz-2.1b		25/10/2018	00:15	Pl, LC-43/4	2018-082	Cosmos 2528 (Lotos-S1)
	17	Soyuz-2.1b/Fregat-M		3/11/2018	20:17	Pl, LC-43/4	2018-086	Cosmos 2529
	1	Soyuz-2.1b/Fregat-MT		7/11/2018	00:47	CSG, ELS	2018-087	MetOp-C
	18	Soyuz-2.1b/Fregat-M		21/02/2019	16:47	Ba, LC-31/6	2019-008	EgyptSat A
	19	Soyuz-2.1b/Fregat-M		27/05/2019	06:23	Pl, LC-43/4	2019-030	Cosmos 2534
	20	Soyuz-2.1b/Fregat-M		5/07/2019	05:41	Vo, LC-1S	2019-038	Meteor-M 2-2
	21	Soyuz-2.1b/Fregat-M		26/09/2019	07:46	Pl, LC-43/4	2019-065	Cosmos 2541
	22	Soyuz-2.1b/Fregat-M		11/12/2019	08:54	Pl, LC-43/3	2019-088	Cosmos 2544
	23	Soyuz-2.1b/Fregat-M	ST27	6/02/2020	21:42	Ba, LC-31/6	2020-008	OneWeb L2 1/34
	24	Soyuz-2.1b/Fregat-M		16/03/2020	18:28	Pl, LC-43/4	2020-018	Cosmos 2545
	25	Soyuz-2.1b/Fregat-M	ST28	21/03/2020	17:07	Ba, LC-31/6	2020-020	OneWeb L3 1/34
	26	Soyuz-2.1b/Fregat-M		22/05/2020	07:31	Pl, LC-43/4	2020-031	Cosmos 2546
	27	Soyuz-2.1b/Fregat-M		28/09/2020	11:20	Pl, LC-43/4	2020-068	Gonets-M 17/19
	28	Soyuz-2.1b/Fregat-M		25/10/2020	19:08:42	Pl, LC-43/3	2020-075	Cosmos 2547
	29	Soyuz-2.1b/Fregat-M		3/12/2020	01:14:36	Pl, LC-43/3	2020-091	Gonets-M 20/22
	3	Soyuz-2.1b/Fregat		18/12/2020	12:26:26	Vo, LC-1S	2020-100	OneWeb L4 1/36
	10	Soyuz-2.1b		2/02/2021	20:45:28	Plesesk, LC-43/4	2021-008	Cosmos 2549
	4	Soyuz-2.1b/Fregat		28/02/2021	06:55:01	Baik, LC-31/6	2021-016	Arktika-M 1
	5	Soyuz-2.1b/Fregat	ST30	25/03/2021	02:47:33	Vo, LC-1S	2021-025	OneWeb L5-1/36
	6	Soyuz-2.1b/Fregat	ST31	25/04/2021	22:14:08	Vo, LC-1S	2021-031	OneWeb L6-1/36
	7	Soyuz-2.1b/Fregat	ST32	28/05/2021	17:38:39	Vo, LC-1S	2021-045	OneWeb L7-1/36
	11	Soyuz-2.1b		25/06/2021	19:50	Pl, LC-43/4	2021-056	Cosmos 2550 (Pion-NKS#1)
	8	Soyuz-2.1b/Fregat	ST33	1/07/2021	12:48:33	Vo, LC-1S	2021-060	OneWeb L8-1/36
	9	Soyuz-2.1b/Fregat	ST34	21/08/2021	22:13:40	Baik, LC-31/6	2021-075	OneWeb L9-1/34
	10	Soyuz-2.1b/Fregat	ST35	14/09/2021	18:07:19	Ba, LC-31/6	2021-083	OneWeb L10-1/34
	11	Soyuz-2.1b/Fregat	ST36	14/10/2021	09:40:10	Vo, LC-1S	2021-090	OneWeb L11-1/36
	12	Soyuz-2.1b		24/11/2021	13:06:35	Baik, LC-31/6	2021-111	Prichal ( Progress-M-UM)
	12	Soyuz-2.1b/Fregat		25/11/2021	01:09:13	Pl, LC-43/4	2021-113	Cosmos 2552 (Tundra 15L)
	13	Soyuz-2.1b/Fregat	ST37	27/12/2021	13:10:37	Baik, LC-31/6	2021-132	OneWeb L12-1/36
	14	Soyuz-2.1b/Fregat		5/03/2022		Baik, LC-31/6	2022-	OneWeb LSB6 1/36
	13	Soyuz-2.1b		7/04/2022	11:20:18	Pl, LC-43/3	2022-036	Cosmos 2554
	15	Soyuz-2.1b/Fregat		7/07/2022	09:18:06	Pl, LC-43/4	2022-075	Cosmos 2557 (Uragan-K #4)
	16	Soyuz-2.1b/Fregat		9/08/2022	05:52:38	Baik, LC-31/6	2022-096	Khayyam 1 (Project 505)
	17	Soyuz-2.1b/Fregat		10/10/2022	02:52:32	Pl, LC-43/3	2022-130	Cosmos 2559 (GLONASS-K 17L)
	18	Soyuz-2.1b/Fregat		22/10/2022	19:57:09	Vostochny, LC-1S	2022-139	Gonets-M 23/25
	19	Soyuz-2.1b/Fregat		2/11/2022	06:47:48	Pl, 43/4	2022-145	Cosmos 2563 (Tundra 16L)
	20	Soyuz-2.1b/Fregat		28/11/2022	15:13:50	Pl, LC-43/3	2022-161	Cosmos 2564 (Uragan-M #51)
	14	Soyuz-2.1b		30/11/2022	21:10:25	Pl, LC-43/4	2022-163	Cosmos 2565 (Lotos-S1 #6)
	21	Soyuz-2.1b/Fregat		27/06/2023	11:34:49	Vo, LC-1S	2023-091	Meteor-M 2-3
	22	Soyuz-2.1b/Fregat		7/08/2023	13:19:25	Pl, LC-43/3	2023-114	Cosmos 2569 (Uragan-K2 #1)
	23	Soyuz-2.1b/Fregat		10/08/2023	23:10:57	Vo, LC-1S	2023-118	Luna 25 (Luna-Glob Lander)
	15	Soyuz-2.1b		27/10/2023	06:04:43	Pl, LC-43/3	2023-165	Cosmos 2570
	16	Soyuz-2.1b		25/11/2023	20:58:07	Pl, LC-43/4	2023-182	Cosmos 2572 (Razdan #1)
	24	Soyuz-2.1b/Fregat		16/12/2023	09:17:48	Baik, LC-31/6	2023-198	Arktika-M N?2
	17	Soyuz-2.1b		21/12/2023	08:48:39	Pl, LC-43/4	2023-201	Cosmos 2573 (Bars-M #5)
	30	Soyuz-2.1b/Fregat-M		29/02/2024	05:43:26	Vo, LC-1S	2024-039	Meteor-M 2-4
	18	Soyuz-2.1b		31/03/2024	09:36:45	Baik, LC-31/6	2024-061	Resurs-P 4
	31	Soyuz-2.1b/Fregat-M		16/05/2024	21:21:39	Pl, LC-43/4	2024-092	Cosmos 2576 (Nivelir-L #4)
	25	Soyuz-2.1b/Fregat		4/11/2024	23:18:40	Vo, LC-1S	2024-199	Ionosfera-M 1/2
	19	Soyuz-2.1b		4/12/2024	17:59	Pl, 43/4	2024-230	Cosmos 2580 (Lotos-S1 #8)
	20	Soyuz-2.1b	S15000-037	25/12/2024	07:45:42	Baik, LC-31/6	2024-250	Resurs-P 5
	32	Soyuz-2.1b/Fregat-M		2/03/2025	22:22	Pl, LC-43/3	2025-042	Cosmos 2584 (Uragan-K2 #2)
	26	Soyuz-2.1b/Fregat		23/05/2025	08:36	Pl, LC-43/4	2025-109	Cosmos 2588 (Nivelir-L #5)
	33	Soyuz-2.1b/Fregat-M		25/07/2025	05:54	Vo, LC-1S	2025-155	Ionosfera-M 3/4
		Soyuz-2.1b		20/08/2025	17:13	Bai, LC-31/6	2025-181	Bion-M 2
	34	Soyuz-2.1b/Fregat-M		13/09/2025	02:10	Pl, LC-43/3	2025-206	Cosmos 2595/2596
	35	Soyuz-2.1b/Fregat-M		28/12/2025	13:18:05	Vo, LC-1S	2025-313	Aist-2T 1/2

Note:

- Launches from Baikonur LC31/6 and Plesetsk, LC43/4
- All "Launch Date" and "L. Time" are in UTC time.

The image was captured at the Progress Rocket Space Centre in Russia. The components are all for Soyuz-2.1b rockets. Credit: Roscosmos

External links:

Spaceflight 101: Rocket Information

Ref.: #0, #7, #14, #94a, #110, #215 - update: 22.09.2026

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