Flight control surface authority question.

In summary, the conversation discusses the difficulty in finding the formula for calculating the authority of a flight control surface. This has been a problem in the industry, with even mature aircraft encountering issues such as the loss of the prototype C130J due to inadequate control authority. It is noted that the authority can also be affected by the air flow around the control surfaces, making the basic calculations just a starting point. The help of anyone who has experience with similar calculations is greatly appreciated.
  • #1
Strike_42
1
0
Hey everyone,

I'm trying to figure out what formula I would use to find the authority a flight control surface (not a wing) would have when deflected. I've been searching and searching for information, but if anyone has done some similar calculations, the help would be greatly appreciated!
 
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  • #2
Not a simple question, as the industry still encounters problems here, even in fairly mature aircraft.
For instance, the prototype C130J was lost because of inadequate control authority in a flight test.
Plus the authority can vary depending on the air flow around the control surfaces.
So the basic calculations are just a beginning.
 

1. What is a flight control surface?

A flight control surface is a movable part of an aircraft's wing or tail that is used to control the direction or attitude of the aircraft during flight. Examples include ailerons, elevators, and rudders.

2. What is flight control surface authority?

Flight control surface authority refers to the degree to which a control surface can affect the movement or attitude of the aircraft. In other words, it is the level of control that the pilot has over the aircraft's movements using the control surfaces.

3. How is flight control surface authority determined?

There are several factors that determine the flight control surface authority of an aircraft, including the size and shape of the control surface, the position of the control surface on the aircraft, and the speed and direction of the airflow over the control surface.

4. Why is flight control surface authority important?

Flight control surface authority is important because it allows the pilot to have precise control over the aircraft's movements, making it easier to fly and perform maneuvers. Without sufficient authority, the aircraft may be difficult to control and can lead to unsafe situations.

5. How can flight control surface authority be improved?

Flight control surface authority can be improved by making adjustments to the design and placement of the control surfaces, such as increasing their size or changing their position on the aircraft. Additionally, advancements in technology and aerodynamics can also improve the overall authority of flight control surfaces.

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