Study for the SIFT Army Aviation Information Test. Use flashcards and multiple-choice questions with detailed explanations to sharpen your skills. Prepare for a successful exam day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.


The driven region is ________ the blade tips and normally __ percent of the radius:

  1. Nearest, 30

  2. Furthest from, 30

  3. Mid-span from, 50

  4. Nearest, 50

The correct answer is: Nearest, 30

The driven region refers to the area of a rotor blade where the lift is generated due to the change in air pressure effects, and it is positioned nearest to the blade tips. This region is crucial for maintaining efficient aerodynamic performance as it significantly contributes to the overall lift generated by the rotor system. In a rotor blade, the driven region typically encompasses about 30 percent of the radius, emphasizing the importance of the outer portion of the blade in the generation of lift. The positioning of the driven region nearest to the blade tips allows for effective energy transfer from the rotor to the air, optimizing performance during flight conditions. Understanding the configuration of the driven region helps pilots and engineers assess rotor performance and its impact on aircraft stability and maneuverability, especially in various flight regimes.