联盟 2.1a/Fregat-M | Meridian-M No.18
发射信息
| 任务代号： | 2019-046 |
| 发射状态： | 发射成功 |
| 发射服务商： | 俄罗斯航天部队 |
| 火箭型号： | 联盟 2.1a Fregat-M |
| 火箭家族： | 联盟, 联盟 2 |
| 任务名称： | Meridian-M No.18 |
| 任务类型： | Communications |
| 发射地点： | 普列谢茨克航天发射场，俄罗斯联邦 |
| 发射工位： | 43/4 (43R) |
| 轨道类型： | 近地轨道 |
任务详情
The Meridian series of communications satellites is reported to be the replacement for all the Molniya-1T, the Molniya-3 and Molniya-3K satellite series and possibly also for the communication component of the Parus. They are launched into highly eccentric Molniya-orbits. Meridian is the highly eccentric orbit (HEO) component of the Integrated Satellite Communications System (ISSS), where they work in conjunction with the geostationary Raduga-1M (Globus-M) satellites. The bus structure is reportedly pressurized, possibly based on the Uragan-M bus. Meridian satellites carry three transponders operating in different frequency bands.
运营机构
未知
火箭详情
基本信息
| 名称 | 联盟 2.1a/Fregat-M |
| 全名 | 联盟 2.1a Fregat-M |
| 家族 | 联盟, 联盟 2 |
| 型号 | Fregat-M |
| 制造商 | 进步货运飞船 Rocket Space Center |
规格参数
| 长度 | 46.3 m |
| 直径 | 2.95 m |
| 最小级数 | 3 |
| 最大级数 | 3 |
| 起飞质量 | 312 t |
| 起飞推力 | 4149 kN |
| LEO运力 | 7020 kg |
| GTO运力 | - kg |
| 首飞时间 | 2010-10-19 |
描述
The 2.1a version includes conversion from analog to digital flight control system and uprated engines on the booster and the first stage with improved injection systems. The new digital flight control and telemetry systems allow the rocket to launch from a fixed rather than angled launch platform and adjust its heading in flight. A digital control system also enables the launch of larger commercial satellites with wider and longer payload fairings such as the ST-type fairing. These fairings introduce too much aerodynamic instability for the old analog system to handle.
发射场详情
| 发射场名称 | 普列谢茨克航天发射场，俄罗斯联邦 |
| 发射工位 | 43/4 (43R) |
| 国家 | Russia |
| 经纬度 | 62.92883, 40.457098 |
