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YouTube - Air-Flow Characteristics on a 40 Degree Swept Back Wing
the above video indicates that as the angle of attack rises the span-wise airflow rises & more probably the leading wing edges will stall first. Also notice that no appreciable change in airflow occurs at the root(attachment with the fuselage) of the wings
YouTube - Flow Studies Over a Swept Wing Model
video indicates the use of leading-edge blowing techniques to arrest the span-wise airflow & make it flow towards the rear root of the respective wing (notice the surface tufts at leading edges flowing ~towards the fuselage). Same result too can be achieved using vortes generators such as wing fences on SU-22
Now, I have two questions.
the above video indicates that as the angle of attack rises the span-wise airflow rises & more probably the leading wing edges will stall first. Also notice that no appreciable change in airflow occurs at the root(attachment with the fuselage) of the wings
YouTube - Flow Studies Over a Swept Wing Model
video indicates the use of leading-edge blowing techniques to arrest the span-wise airflow & make it flow towards the rear root of the respective wing (notice the surface tufts at leading edges flowing ~towards the fuselage). Same result too can be achieved using vortes generators such as wing fences on SU-22
Now, I have two questions.
- Why in the very 1st place spanwise airflow occurs i.e why not the air just flow straight towards the rear of wing?
- Is this spanwise airflow problem more prominent in Delta wing or Swept wing configuration?