No GPS. No electronics. Yet WWII torpedoes cut straight through currents and hit their marks. Mind-blowing engineering from the analog era. ⚓️ The secret? • Internal gyroscopes that kept the torpedo locked on its preset course (spun up before launch and resistant to turning forces). • Hydrostatic valves that automatically sensed water pressure to hold exact depth. These mechanical marvels used linkages to tweak the rudders in real-time, countering currents without any active homing or fancy sensors. Pure physics and precision craftsmanship. Late-war German U-boats took it further with pattern-running torpedoes (like the FAT and LUT): after a straight run, they’d zigzag, loop, or circle through convoy lanes to maximize hits in crowded waters. Old-school ingenuity at its finest. 🎥 astro_saim

@dreamsNscience 发布在 X（原 Twitter）上的视频（2026年7月3日 ・ 技術 ・ 0:30）。可在 XCLYP 观看和下载。