Скачать или смотреть Every Country Tried to Build a Jump Jet. Only Britain Succeeded.

The Americans tried. The Soviets tried. The French tried. The Germans tried. Every major military power in the world spent decades and billions trying to build a fighter jet that could take off vertically, hover, and then fly at combat speed. They all failed. Except one. A small team at Hawker Siddeley in Kingston upon Thames built the Harrier. And it changed warfare.But before you can appreciate what they did, you have to understand the problem they solved. Because vertical takeoff isn't just difficult. It's the kind of difficult that breaks entire nations' aerospace industries.Here's the basic physics. To lift off vertically, a jet engine must produce more thrust than the total weight of the aircraft. Every pound of airframe, fuel, weapons, pilot, ejection seat — the engine has to beat all of it, pointed straight down, with zero help from the wings. Wings generate nothing at zero airspeed. They're dead weight. And here's where it gets cruel: jet engines are heavy. Fuel is heavy. So you need a bigger engine to lift the heavier aircraft, but the bigger engine adds weight, which means you need an even bigger engine. It's a death spiral. Every VTOL designer in history has slammed face-first into it.And that's just the start.In a hover, your ailerons don't work. Your rudder doesn't work. Your elevators don't work. None of the flight controls that keep a normal aircraft stable do anything at all, because they need airflow to function and there isn't any. You're balanced on a column of thrust like a broomstick on a fingertip. One gust of wind and you're rolling, pitching, tumbling — with no aerodynamic way to correct it. So you need reaction control jets at the wingtips, nose, and tail, bleeding compressed air from the engine to keep yourself pointed upright. More weight. More complexity. More things to fail.