任务档案 · MISSION

Certification Flight 2

联合发射联盟 (ULA) · Vulcan VC2S · 41 号发射工位 (SLC-41)

成功

任务成功

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任务简介

由于原计划载荷 Sierra Space Dreamchaser CRS SNC-1 任务的载荷测试延误，此次发射为替代的 Vulcan 试验发射，搭载惰性有效载荷、实验和演示，以通过 USSF 认证。在 T+37 秒时，观察到其中一台 GEM-63XL 固体火箭助推器喷管喷出，导致上升过程中推力降低且不对称，但性能不足完全由 Vulcan 的其他级补偿。

原文

↗ Vulcan Cert-2

Replacement Vulcan test launch with inert payload, experiments, and demonstrations for certification with the USSF after delays caused by payload testing of the Sierra Space Dreamchaser CRS SNC-1 mission, the original planned payload. One of the GEM-63XL SRBs was observed to blown out its booster nozzle at T+37 seconds, causing reduced and asymmetric thrust during ascent, however the performance shortfall was fully compensated by Vulcan's other stages.

飞行时间线 Flight Timeline12 节点

T−00:05

点火Ignition

Start of the engine ignition sequence

T+00:01

升空Liftoff

First upwards movement of the rocket

T+01:10

突破音速Supersonic

Vehicle is supersonic

T+01:16

最大动压点Max-Q

Maximum dynamic pressure

T+01:49

固体助推器 (SRB) 分离SRB Separation

The solid rocket boosters are separated from the launcher.

T+04:59

主发动机关机MECO

Cut-off of the main engine

T+05:05

二级分离Stage 2 Separation

Separation of the second stage from the first

T+05:15

二级发动机第一次启动SES-1

First start of the second engine

T+05:23

整流罩分离Fairing Separation

Separation of the payload fairing

T+15:56

二级发动机第一次关机SECO-1

First cut-off of the second engine

T+30:54

二级发动机第二次启动SES-2

Second start of the second engine

T+34:55

二级发动机第二次关机SECO-2

Second cut-off of the second engine

任务更新15 条

21:3310/04

SwGustav · 10/04

Launch success

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19:2510/04

SwGustav · 10/04

Liftoff

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19:0210/04

SwGustav · 10/04

New T-0

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18:3110/04

hitura-nobad · 10/04

HOLD

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18:0110/04

hitura-nobad · 10/04

New T-0 10:30 UTC

17:5110/04

hitura-nobad · 10/04

Weather is 95% GO. Launch on hold.

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17:3510/04

LL2 · 10/04

Official Webcast by United Launch Alliance has started

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21:2410/03

Nosu · 10/03

Weather 80% GO

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08:0710/01

Cosmic_Penguin · 10/01

Weather 75% GO.

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06:4409/18

Cosmic_Penguin · 09/17

Added launch window.

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10:4509/17

Cosmic_Penguin · 09/17

NET October 4.

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21:3509/03

Cosmic_Penguin · 09/03

Targeting end of September.

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09:4607/24

Cosmic_Penguin · 07/24

NET September 16.

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02:4406/28

Cosmic_Penguin · 06/27

Updated launch vehicle configuration.

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00:1306/27

Cosmic_Penguin · 06/26

Added launch as replacement for Vulcan USSF certification usage after original payload was delayed.

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