The Sperry A-5 autopilot | A winning technology leap

The Sperry A-5 was a groundbreaking all-electric autopilot introduced during World War II, revolutionizing aircraft control for both the U.S. Army Air Corps and Navy. Unlike its predecessor, the A-3, which used slow pneumatic hydraulics, the A-5 employed vacuum tube amplifiers for each axis of flight—yaw, pitch, and roll—alongside high-speed gyroscopes for precise stabilization. This technology allowed the A-5 to correct the aircraft's course much more quickly and accurately, essential for the era's level bombing techniques. It integrated seamlessly with advanced bombsights like the Norden and Sperry, enabling bombers to maintain a steady flight path to targets for accurate bomb drops. The A-5 not only improved navigation in adverse flying conditions but also set a precedent for future autopilot systems in aviation.

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