更新时间：2026-08-26 来源：互联网编辑：开扁陵点击数： 7295405次

生命之树

总台中国之声解读应急机械拉手安全隐患：与内饰颜色接近不易识别_我的网站

男儿本色

一 | Washington, Oct 12 (UNI) American space agency NASA says its recent attempt to deflect the path of an asteroid was successful, after its Dart probe struck an asteroid head-on.
Scientists have now confirmed the orbit of a 160m-wide space rock known as Dimorphos was altered when the Dart probe struck it head on last month.
Researchers came to the conclusion after making measurements using a range of space and Earth-based telescopes.
The mission was conceived to test a potential strategy to defend the Earth against threatening objects.
Dart's achievement proves such an idea would work, provided it was initiated early enough and the target wasn't overly massive.
"This mission shows that Nasa is trying to be ready for whatever the Universe throws at us," said agency administrator Bill Nelson.
"I believe that Nasa has proven that we are serious as a defender of the planet," he told reporters.
The space agency released a raft of data on Tuesday to support its assessment, including new pictures from the Hubble Space Telescope and from a small Italian spacecraft that stood off from the impact by about 50km (30 miles).
The Double Asteroid Redirection Test (Dart) took place some 11 million km (7 million miles) from Earth.
It saw the refrigerator-sized Nasa satellite drive straight into Dimorphos at 22,000km/h (14,000mph), destroying itself in the process.
The space rock orbits a much larger (780m wide; 2,550ft) object called Didymos. Before impact, the time taken for Dimorphos to make one circuit of its sibling was 11 hours and 55 minutes.
The telescope evidence now indicates this orbital period has been reduced to 11 hours and 23 minutes - a change of 32 minutes. This corresponds to Dimorphos moving closer into to Didymos by "tens of metres".
Nasa had defined a minimum successful period change of Dimorphos of 73 seconds or more. The results released on Tuesday show Dart surpassed this benchmark by more than 25 times.
"This is a 4 percent change in the orbital period of Dimorphos around Didymos. Dart just gave it a small nudge. But if you wanted to do this in the future, you'd want to do it years in advance," commented Nancy Chabot from the Johns Hopkins University Applied Physics Laboratory, which led the mission for Nasa.
"Warning time is really key here in order to enable this sort of asteroid deflection to be used in the future as part of a much larger planetary defence strategy."
Nasa's Dart programme scientist, Tom Statler, also had a word of caution about drawing too many conclusions from the experiment.
Asteroids came in many different guises, he said. Their compositions and constructions were diverse - something that was being emphasised every time a mission visited a new object.
"We should not be too eager to say one test on one asteroid tells us exactly how every other asteroid would behave in a similar situation," he stressed.
"But what we can do is use this test as an anchor point for our physics calculations in our simulations that tell us how different kinds of impacts in different situations should behave."
Four years from now, the European Space Agency (Esa) will have three spacecraft - collectively known as the Hera mission - at Didymos and Dimorphos to make follow-up studies.
UNI ING。

IT之家 8 月 23 日消息，据中央广播电视总台中国之声今天（23 日）报道，日前，国家市场监督管理总局集中发布汽车召回公告，特斯拉、小米、小鹏、零跑等 9 家车企同步启动召回，覆盖数百万辆新能源汽车。本次召回的核心原因高度统一：车内应急机械拉手与内饰颜色接近、辨识度不足，极端碰撞断电场景下可能影响驾乘人员逃生与外部救援。报道指出，在普遍采用电动开门的新能源车型上，车内应急机械拉手是完全脱离电控系统的纯机械结构，也是极端险情下的最后一道逃生防线。汽车产业专家李洋介绍，与传统燃油车直接外露的机械门把手不同，新能源车的应急拉手安装位置并无统一标准：有的藏在车门储物槽内，有的内嵌于扶手内侧的门板上，通常覆盖有同色小盖板，抠开后可通过机械拉索直接解锁车门。

二 | 它唯一的使用场景，是车辆严重碰撞、落水等导致整车低压系统失效的极端情况 —— 当电动开门按键完全失灵时，机械拉手仍可实现“物理解锁”。

三 | 本次召回将“颜色接近、不易识别”定性为安全隐患，并非小题大做。在碰撞、落水等紧急场景下，驾乘人员往往处于慌乱、视线受限的状态，黄金逃生窗口往往只有数秒。

四 | 若应急部件与内饰融为一体、难以快速定位，会直接延误逃生时机。目前多数车企给出的整改方案为加贴醒目警示标识、OTA 升级事故后自动降窗策略，前者提升部件辨识度，后者增加极端场景下的逃生通道，双维度降低安全风险。

五 | IT之家获悉，本次召回的 9 家企业以新能源品牌为主，同类缺陷高度集中。

六 | 这一现象背后，是新能源汽车行业盛行的极简一体化设计风潮。为了降低风阻系数、提升续航表现，同时打造更具科技感的内饰视觉效果，隐藏式门把手、全触屏中控、无物理按键设计逐渐成为行业主流。不少车型为了维持视觉上的简洁统一，将应急操作部件也纳入“隐身设计”范畴，从外露式改为内嵌式、同色化处理，让安全部件为整体造型让步。

七 | 李洋表示，审美迭代本身无可厚非，但汽车产品的设计必须以安全为前提。近年来部分车企出现了“重情绪价值、轻功能安全”的倾向：取消前雾灯、取消两厢和溜背车型的后风挡雨刷、大幅削减实体功能按键…… 诸多实用安全配置为造型让路。这种“专业设计追着大众审美跑”的逻辑，本质是对用户需求的非理性迎合，也让一些基础安全细节被不断弱化。我国首部针对汽车车门把手及应急开启装置的强制性国家标准《汽车车门把手安全技术要求》（GB 48001-2026）将于 2027 年 1 月 1 日正式实施，明确要求所有新车必须保留直观可操作的机械开门结构，并设置清晰醒目的应急标识。

八 | 结合本次大规模集体召回来看，这项新规正是对新能源领域“重颜值、轻安全”设计倾向的制度性纠偏，也是监管层面遏制“畸形创新”的明确信号：创新应当被鼓励，但不能突破安全底线，更不能以牺牲极端场景下的逃生能力为代价。从个案召回到制度规范，也体现出我国汽车安全监管正在不断细化、前置。对于新规落地前已生产销售的海量存量车型，李洋表示，若后续经实际事故案例验证、缺陷评估确认隐藏式结构存在安全隐患，即便车型在新规生效前已获批量产，仍可通过召回流程完成整改。