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Cake day: August 9th, 2023

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  • You’re talking about a 70’s prototype, but that does not mean it would need a kerosene turbine if it was made nowadays. Actually, the Aérotrain S44 used a linear electric motor.

    A train brakes by blocking the wheels on two relatively small rails, and the wheels can lose traction.

    An aerotrain reverses its propulsion, using it as a brake. No slippage possible here.

    It can also bite the rail, having a way bigger braking surface, as well as having an interface dedicated to braking directly on the rail instead of a brake on a wheel on a rail.

    And in emergencies, you can even stop the suspension and let the aerotrain rest directly on the rail to brake. That’s a bit brutal and causes damages (at least back in the 70’s), but that stops the Aérotrain quite fast and is way better than derailing or hitting something.