任务档案 · MISSION

Galileo L12 (FOC FM25 & FM27)

SpaceX · 猎鹰 9 Block 5 · 39A 号发射工位 (LC-39A)

成功

任务成功

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任务简介

两颗欧洲伽利略导航系统卫星。原计划由联盟号-ST火箭发射，后改为阿丽亚娜6号，但两者均不可用。伽利略系统为欧洲提供了美国GPS和俄罗斯GLONASS星座的替代方案，但将与这两个系统实现互操作。

原文

↗ SpaceX

Two satellites for Europe's Galileo navigation system. Originally planned for launch on Soyuz-ST and then Ariane 6 but both were unavailable. Galileo provides Europe with an alternative to the American GPS and Russian GLONASS constellations, but will be interoperable with both systems.

飞行时间线 Flight Timeline15 节点

T−38:00

加注决议通过GO for Prop Load

Launch director verifies go for propellant load

T−35:00

一级 LOX (液氧) 加注Stage 1 LOX Load

Start of liquid oxygen loading in the first stage

T−35:00

推进剂加注开始Prop Load

Start of propelland loading

T−16:00

二级 LOX (液氧) 加注Stage 2 LOX Load

Start of liquid oxygen loading in the second stage

T−07:00

发动机预冷Engine Chill

Start of engine chilling

T−01:00

燃料箱增压Tank Press

Fuel tanks are pressurized to flight levels

T−01:00

自动倒数启动Startup

The onboard computer takes control over the countdown and runs last checks

T−00:45

发射决议通过GO for Launch

Launch director verifies go for launch

T−00:03

点火Ignition

Start of the engine ignition sequence

T+00:00

升空Liftoff

First upwards movement of the rocket

T+01:14

最大动压点Max-Q

Maximum dynamic pressure

T+02:45

主发动机关机MECO

Cut-off of the main engine

T+02:48

二级分离Stage 2 Separation

Separation of the second stage from the first

T+02:55

二级发动机第一次启动SES-1

First start of the second engine

T+03:39

整流罩分离Fairing Separation

Separation of the payload fairing

任务更新15 条

13:2104/28

Cosmic_Penguin · 04/28

Launch success.