What is the minimum N1 required for a proper takeoff?

For a proper takeoff in the CRJ 200, achieving the minimum required N1 (the first engine speed at which the engine experiences a certain percentage of power) is crucial for ensuring adequate performance and safety. The correct answer, which states the minimum N1 needed for takeoff as 83.5%, is based on performance standards set by the manufacturer and regulatory guidelines.

This specific N1 value ensures that the aircraft has sufficient thrust to achieve takeoff speed safely while meeting performance criteria like takeoff distance and climb capability under specific conditions. Operating below this threshold could result in insufficient power to control the aircraft, especially in critical phases such as takeoff or during an engine failure situation.

The other percentages listed represent N1 levels that could either be insufficient for a safe takeoff or exceed the required limits unnecessarily. Each engine setting has been meticulously calculated during the aircraft's design and flight testing, thus the 83.5% mark is the optimal balance for performance requirements while ensuring the safety of the aircraft and its passengers.