Flight control surface authority question.

AI Thread Summary
Determining the authority of a flight control surface when deflected involves complex calculations that are not straightforward, as the aviation industry still faces challenges in this area. The authority can significantly vary based on airflow conditions around the control surfaces. Historical incidents, such as the loss of the prototype C130J due to inadequate control authority, highlight the importance of accurate assessments. Basic calculations serve as a starting point, but further research and refinement are necessary for reliable results. Understanding these dynamics is crucial for improving aircraft safety and performance.
Strike_42
Messages
1
Reaction score
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!
 
Engineering news on Phys.org
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.
 

Thread 'Bubble formation in 4 mm gap vessel'

How did you find PF?: Via Google search Hi, I have a vessel I 3D printed to investigate single bubble rise. The vessel has a 4 mm gap separated by acrylic panels. This is essentially my viewing chamber where I can record the bubble motion. The vessel is open to atmosphere. The bubble generation mechanism is composed of a syringe pump and glass capillary tube (Internal Diameter of 0.45 mm). I connect a 1/4” air line hose from the syringe to the capillary The bubble is formed at the tip...
View full post »
Thread 'Physics of Stretch: What pressure does a band apply on a cylinder?'

Thread 'Physics of Stretch: What pressure does a band apply on a cylinder?'

Scenario 1 (figure 1) A continuous loop of elastic material is stretched around two metal bars. The top bar is attached to a load cell that reads force. The lower bar can be moved downwards to stretch the elastic material. The lower bar is moved downwards until the two bars are 1190mm apart, stretching the elastic material. The bars are 5mm thick, so the total internal loop length is 1200mm (1190mm + 5mm + 5mm). At this level of stretch, the load cell reads 45N tensile force. Key numbers...
View full post »

Thread 'Find 3D Printer & Software Resources for Prototype Creation'

I'd like to create a thread with links to 3-D Printer resources, including printers and software package suggestions. My motivations are selfish, as I have a 3-D printed project that I'm working on, and I'd like to buy a simple printer and use low cost software to make the first prototype. There are some previous threads about 3-D printing like this: https://www.physicsforums.com/threads/are-3d-printers-easy-to-use-yet.917489/ but none that address the overall topic (unless I've missed...
View full post »

Similar threads

Can Planes Turn Without Yaw Control?
Replies
11
Views
3K
Surface speed of a strip over a deflection roll
Replies
8
Views
2K
Automotive Topology optimization of an engine's cylinder block
Replies
14
Views
846
Bernoulli vs. Reynold Transport Theorem Problem for Raincap
Replies
11
Views
3K
Flight Mechanics - Maximum Cruise Altitude
Replies
4
Views
4K
Minimizing the friction of the end of a lever against the top of a moving piston
Replies
21
Views
2K
Increasing Wing Surface Area with Pores?
Replies
31
Views
13K
Engineering Control System mass spring damper
Replies
0
Views
1K
Research on HV to UHV vacuum gauge and controller build (Amateur scale)
Replies
1
Views
944
Find Projectile Flight Time Given Only Maximum Height
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top