跟进：太空军USSF-481保密任务范登堡升空 猎鹰9号助推器B1081第28次飞行后海上回收成功
美西时间10月15日下午5时01分，SpaceX一枚猎鹰9号火箭从加利福尼亚州范登堡太空军基地的SLC-4E发射台升空，执行美国太空军编号USSF-481的保密任务。SpaceX官方账号在升空后随即发帖确认升空，升空时间与发射前公布的目标时间一致，为下午5时01分（协调世界时10月16日0时01分）。火箭离台后沿南方轨迹飞行。
本站10月14日曾预告本次发射：原定四小时发射窗口于10月15日下午4时44分开启、晚8时44分关闭。发射当日，SpaceX将目标升空时间定在窗口内的下午5时01分，火箭按该时间升空，10月16日下午4时35分的备用发射机会未启用。
执行本次任务的一级助推器编号B1081，这是它的第28次飞行。一级与二级分离后，助推器展开返航；升空约8分钟后，它落在停泊于太平洋上的「当然我仍然爱你」（Of Course I Still Love You）无人驾驶回收船上。SpaceX官方账号于下午5时12分发帖确认一级助推器已在该回收船上着陆。B1081此前执行过「龙」飞船载人任务Crew-7、货运补给任务CRS-29、美国国家航空航天局（NASA）的PACE与EarthCARE科学任务、国家侦察局的NROL-186、太空军的USSF-153等任务，以及16次星链卫星发射。
USSF-481的载荷性质与用途未对外公开，SpaceX与美国太空军均未公布载荷的进一步细节。由于任务保密，本次发射转播在一级、二级分离后不再提供火箭第二级的画面；截至发稿，官方未公布载荷部署情况。
这是范登堡基地本周的第二次发射：10月12日下午，另一枚猎鹰9号刚从同一发射台将27颗星链卫星送入轨道，本站此前已作报道。
Follow-Up: Falcon 9 Launches Classified USSF-481 Mission From Vandenberg as Booster B1081 Lands at Sea on Its 28th Flight
A SpaceX Falcon 9 rocket lifted off at 5:01 p.m. PDT on Thursday, October 15, from Space Launch Complex 4E (SLC-4E) at Vandenberg Space Force Base in California, carrying the U.S. Space Force's classified USSF-481 mission. SpaceX confirmed liftoff in a post on its official account shortly afterward; the liftoff time matched the targeted 5:01 p.m. PDT (0001 UTC on October 16). The rocket flew a southerly trajectory after leaving the pad.
GSM previewed the launch on October 14: the original four-hour window was to open at 4:44 p.m. PDT on October 15 and close at 8:44 p.m. On launch day, SpaceX targeted liftoff at 5:01 p.m. within that window, the rocket launched at that time, and the backup opportunity on Friday, October 16, at 4:35 p.m. PDT was not needed.
The first-stage booster, tail number B1081, flew for the 28th time on this mission. After stage separation, the booster returned and, about eight minutes after liftoff, landed on the Of Course I Still Love You droneship stationed in the Pacific Ocean. SpaceX confirmed the landing in an official post at 5:12 p.m. PDT. B1081 previously launched the Crew-7 crewed mission, the CRS-29 cargo mission, NASA's PACE and EarthCARE science missions, the National Reconnaissance Office's NROL-186, the Space Force's USSF-153, and 16 Starlink missions, among others.
The nature and purpose of the USSF-481 payload have not been publicly disclosed, and neither SpaceX nor the U.S. Space Force released further payload details. Because the mission is classified, the launch webcast provided no views from the rocket's second stage after stage separation, and officials had not announced a payload deployment status as of publication.
It was the second launch of the week from Vandenberg: on the afternoon of October 12, another Falcon 9 lifted off from the same pad carrying 27 Starlink satellites, as GSM reported earlier.
来源：GSM·美国（原文链接）
图片来源：图：执行USSF-481任务的猎鹰9号火箭矗立于范登堡太空军基地SLC-4E发射台（发射前）。图：SpaceX官方发布，来源：SpaceX USSF-481任务页
GSM Global · 本篇英文版 English edition of this story
- 2026-10-14 16:10SpaceX定于周四傍晚范登堡发射太空军USSF-481保密任务：猎鹰9号助推器迎第28次飞行
- 2026-10-15 17:17跟进：太空军USSF-481保密任务范登堡升空 猎鹰9号助推器B1081第28次飞行后海上回收成功本篇
