Aircraft Performance

َQuestions you should be able to answer!

  • Derive the equations of motion of an aircraft in longitudinal flight
  • What is the Drag-Polar?
  • Why do we prefer high aspect ratio wings for low speed flight and vice versa?
  • Why do not we prefer to fly at speeds lower than the minimum drag speed?
  • For different engine type (Jet and Propeller) derive the relations for the best speed for maximum range and that for maximum endurance.
  • What are the factors affecting climbing performance of an aircraft?
06 Aircraft Performance

Coordinate System

Performance Assumptions


Aerodynamic Forces

Drag Polar

Minimum Thrust

Required Power

Available Power

Maximum Speed

Aircraft Range - Propeller Aircraft

Calculating Range

Lectures from TU-Delft

Fuel for your Imagination!