任务档案 · MISSION

USSF-124

SpaceX · 猎鹰 9 Block 5 · 40 号发射工位 (SLC-40)

成功

任务成功

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任务简介

两颗卫星，分别由L3Harris和诺斯罗普·格鲁曼公司制造，将作为美国导弹防御局的高超音速与弹道跟踪空间传感器（HBTSS）任务发射。这些卫星具有更高的灵敏度，能够探测和跟踪信号更微弱的高超音速导弹。此外，还将搭载4颗由L3Harris制造的SDA Tranche 0跟踪层导弹预警卫星。

原文

↗ SpaceX

2 satellites, one by L3Harris and the other by Northrop Grumman, will be launched as the Hypersonic and Ballistic Tracking Space Sensor (HBTSS) mission for the US Missile Defense Agency. These satellites have improved sensitivity to detect and track hypersonic missiles with fainter signatures. 4 SDA Tranche 0 Tracking Layer missile warning satellites by L3Harris will also be on board.

飞行时间线 Flight Timeline21 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

自动倒数启动Startup

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

T−01:00

燃料箱增压Tank Press

Fuel tanks are pressurized to flight levels

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+01:12

最大动压点Max-Q

Maximum dynamic pressure

T+02:16

主发动机关机MECO

Cut-off of the main engine

T+02:19

二级分离Stage 2 Separation

Separation of the second stage from the first

T+02:27

二级发动机第一次启动SES-1

First start of the second engine

T+02:32

助推器返回点火Booster Boostback Burn Startup

Start of the booster boostback burn

T+03:08

整流罩分离Fairing Separation

Separation of the payload fairing

T+03:26

助推器返回关机Booster Boostback Burn Shutdown

End of the booster boostback burn

T+06:16

再入减速点火Entry Burn Startup

Start of the atmospheric entry burn

T+06:34

再入减速关机Entry Burn Shutdown

End of the atmospheric entry burn

T+07:32

一级着陆减速点火Stage 1 Landing Burn

Start of the first stage landing burn

T+08:01

一级着陆Stage 1 Landing

Landing of the first stage

任务更新17 条

11:1402/15

Cosmic_Penguin · 02/15

Launch success.