Welcome Guest. Sign in or Signup

1 Answers

Sweepback design wing

Asked by: 4091 views Aerodynamics, Commercial Pilot, Flight Instructor, Private Pilot, Student Pilot

Hello everyone,

 

I am having diffciulty understanding sweep back wing design and its characteristics in genration of lift. I know that stall progression develops from tip towards root and wing sweepback is slanted rearward. However there is a spanwise flow that decreases in magnitutde. Can anyone explain why and how aileron loses effectiveness and stalls first ?

Lastly, is it true that air flows parallel to the chord of the wing (chordwise flow) to generate lift? I  could not find this information on PHAK but some internet sources.

 

Steve

Ace Any FAA Written Test!
Actual FAA Questions / Free Lifetime Updates
The best explanations in the business
Fast, efficient study.
Pass Your Checkride With Confidence!
FAA Practical Test prep that reflects actual checkrides.
Any checkride: Airplane, Helicopter, Glider, etc.
Written and maintained by actual pilot examiners and master CFIs.
The World's Most Trusted eLogbook
Be Organized, Current, Professional, and Safe.
Highly customizable - for student pilots through pros.
Free Transition Service for users of other eLogs.
Our sincere thanks to pilots such as yourself who support AskACFI while helping themselves by using the awesome PC, Mac, iPhone/iPad, and Android aviation apps of our sponsors.

1 Answers



  1. Bryan Kutcher on Aug 23, 2018

    Steve, this would be an excellent question for Peter Garrison, Flying Magazine.

    So, you may have answered your own question. As the wing stalls from tip to the root, the ailerons lose effectiveness. The ailerons are usually going to be located outboard of the flaps and closer to the tip than the root. When the tips begin to stall, progressing inward, the ailerons will not be effective.

    Ailerons are not effective in our C172 fully-developed stalls until we are flying again, right? Same principle. Of course, our light aircraft are designed to stall from the root to the tip so as to maintain aileron effectiveness as much as possible until the actual stall break.

    0 Votes Thumb up 0 Votes Thumb down 0 Votes


The following terms have been auto-detected the question above and any answers or discussion provided. Click on a term to see its definition from the Dauntless Aviation JargonBuster Glossary.

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.