rdstr

#RDSTR #ElonMusk
特斯拉新Roadster并不是真正的持续飞行汽车，而是一辆极致轻量化超跑，搭载SpaceX风格的冷气体推进器，可实现短时悬停、翻转和亚秒级加速。
Tesla’s new Roadster isn’t a true flying car — it’s an ultra-light supercar with SpaceX-style cold-gas thrusters for short bursts of flight, flips, and sub-second acceleration.
实现原理：
超高压压缩空气（约10,000 psi）储存在全车各处的碳纤维缠绕压力容器（COPV）中，总量约250公斤/600升。通过约10个喷嘴高速喷出气体，无燃烧，纯靠牛顿第三定律产生反推力。推力直接作用于车身，绕过轮胎抓地力限制（官方称可达轮胎抓地力的4-5倍）。车载压缩机可在行驶中自动补气。
How it works:
High-pressure compressed air (~10,000 psi) is stored in carbon-fiber overwrapped pressure vessels (COPVs) packed throughout the car (~250 kg / 600 liters). Ten nozzles fire the gas at high speed. No combustion, just Newton’s third law. Thrust acts directly on the chassis, bypassing tire grip limits (claimed 4–5× the force of the tires alone). An onboard compressor recharges the tanks while driving.
续航： 纯电续航超过300英里；推进器高强度使用仅能维持数秒，补气速度远慢于消耗速度。
Duration: Electric range is quoted at 300+ miles. Thruster “flight” time is only seconds of intense use. Gas depletes fast; recharging takes much longer.
结构与重量： 碳纤维单体壳 + 镁合金、钛合金及复合材料。即使加上推进系统，重量仍明显低于Model S Plaid（约2200公斤）。固定座椅和手动控制进一步减重。
Structure & weight: Carbon-fiber monocoque + magnesium, titanium, and composites. Significantly lighter than a Model S Plaid (~2,200 kg) despite the thruster system. Fixed seats and manual controls further cut mass.
安全与价格： 马斯克明确表示安全不是首要目标。高压COPV存在额外风险。预计起售价约20万美元（沿用2017年说法，官方未更新）。量产目标2028年。分Performance、Thrust、Rocket版本，高配更偏向赛道/演示。
Safety & price: Musk has said safety is not the main goal. High-pressure COPVs add risk. Expected price starts around $200k (2017 figure; not updated). Production targeted for 2028. Performance, Thrust, and Rocket versions exist; higher ones are more limited/track-oriented.
这是一辆牺牲日常实用性、追求极限性能的光环车。
​A halo car that trades everyday practicality for extreme performance.