How do EMALS and steam catapult energy transfer differ?

How do EMALS and steam catapult energy transfer differ?

• A. EMALS uses electric linear motors to accelerate; steam catapult uses high-pressure steam powering a piston to accelerate.
• B. EMALS uses steam; steam catapult uses electric motors.
• C. Both use hydraulic systems.
• D. EMALS uses rockets.

Answer: (A)

EMALS delivers energy by electricity to electric linear motors embedded in the launch track. Those motors generate motion directly through magnetic forces, converting electrical energy into the kinetic energy of the shuttle and allowing precise, variable acceleration by controlling current and voltage. A steam catapult, on the other hand, uses high‑pressure steam to push a piston (the shuttle) along the track. The steam’s thermal energy moves the piston, which then transfers energy through a hydraulic system to accelerate the aircraft. In short, EMALS converts electrical energy into motion via magnetic propulsion, while the steam catapult converts steam power into motion via a piston and hydraulic path. The other options misstate the energy source or the mechanism: EMALS does not rely on steam or rockets, and both systems do not use hydraulic systems in the same primary way.

EMALS delivers energy by electricity to electric linear motors embedded in the launch track. Those motors generate motion directly through magnetic forces, converting electrical energy into the kinetic energy of the shuttle and allowing precise, variable acceleration by controlling current and voltage.

A steam catapult, on the other hand, uses high‑pressure steam to push a piston (the shuttle) along the track. The steam’s thermal energy moves the piston, which then transfers energy through a hydraulic system to accelerate the aircraft.

In short, EMALS converts electrical energy into motion via magnetic propulsion, while the steam catapult converts steam power into motion via a piston and hydraulic path.

The other options misstate the energy source or the mechanism: EMALS does not rely on steam or rockets, and both systems do not use hydraulic systems in the same primary way.