任务档案 · MISSION

Astra 1B & Meteosat 5

阿丽亚娜航天 (Arianespace) · 阿丽亚娜 44LP · 阿丽亚娜 2 号发射区 (ELA-2)

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Astra 1B 是 SES（欧洲卫星公司）发射并运营的第二颗 Astra 通信卫星。据信该卫星在发射时即存在故障，并在寿命初期遭遇推进器失效，导致轻微漂移，使得卫星锁定变得永久性困难。这在模拟传输中尤为明显，画面会从清晰变为出现雪花点，再恢复清晰。

原文

Astra 1B was the second of the Astra communications satellites launched and operated by SES (Société Européenne des Satellites). It was believed to have been launched in a faulty condition, and suffered a thruster failure early in its life, causing minor drift, meaning that it became permanently difficult to obtain a steady lock on the satellite. This was most notable on analogue transmissions where the picture would move from clear to carrying sparklies and back again.

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