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More than 100 years of history

Trail bar

ElectroMagnetic Aircraft Launch System

Launch bar

In 1904, the American Samuel Langley was the first to launched a plane with a catapult.

Advantages

  • Compressed air catapult (1912)

- Less maintenance and longer life time than a steam catapult

- Less stress on the plane (gradual/continual acceleration)

- Smaller, lighter, more efficient than a steam catapult

  • 1950 : first take-off on the HMS Perseus carrier (Royal Navy)
  • Acceleration up to 5G
  • Accelerate airplane to 260 km/h in 2.5 s
  • The plane attached on a piston is launched using pressured steam
  • The steam catapult comes from the carrier boiler
  • Gunpowder catapult (1924)
  • August 1939 : First take-off by the US Navy on the Yorktown and Enterprise.
  • No one was interrested because of the price, the system's size and time taken by the take off.

This system wasn't used on aircraft carriers. It was made to assist light planes to take off from the ground.

+

Steam

Hydraulic

Weight and

derrick

EMALS

Gunpowder and

compressed air

1950

1904

1912 - 1924

During

WWII

2010

CATOBAR Aircraft carriers : the catapult

The catapult assist the plane during its take off, because the desk is shorter than a runway on the ground.

As the planes became heavier, the catapult became necessary for the plane, to take off on a reduced distance.

An alternative to catapults :

Ski jumps !

Aircraft catapults

The plane takes off using its own power

STOBAR aicraft carrier

(Short Take Off But Arrested Recovery)

Planes on aicraft carriers

Aircraft carriers are warships that carry, arm, deploy and recover aircrafts. They are equipped with full-lenght flight deck, and allow armies to be independant from bases.

There is 4 different configurations :

- STOBAR : Short Take Off But Arrested Recovery

- STOVL : Short Take Off Vertical Landing

- Helicopter carriers

- CATOBAR : Catapult Assisted Take Off But Arrested Recovery

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