FREE UAG Aerodynamics Questions and Answers
What aerodynamic principle explains the lift generation due to the pressure difference above and below an unmanned aircraft's wing?
Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure. The faster airflow over the top of the wing creates lower pressure compared to the higher pressure below the wing, generating lift.
What is the term for the point at which the airflow over an unmanned aircraft's wing becomes turbulent and separates from the surface, causing a sudden loss of lift?
The critical angle of attack is the angle at which the airflow separates from the wing, causing a stall and a significant reduction in lift.
How does increasing the angle of attack affect the lift generated by an unmanned aircraft's wing?
Increasing the angle of attack increases lift until reaching a critical angle, beyond which the airflow separates from the wing surface, causing a stall and a sudden decrease in lift.
In unmanned aircraft, what effect does an increase in airspeed have on the dynamic pressure exerted on the wings?
Dynamic pressure increases with the square of the airspeed, meaning that as the airspeed increases, the dynamic pressure on the wings also increases, which contributes to greater lift.
What is the primary force that opposes the weight of an unmanned aircraft in flight?
Lift is the force that opposes the weight of the aircraft and is generated by the aerodynamic surfaces, such as wings, as they move through the air.