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4 votes

What are these strakes on the belly of the F-16 for?

Those are called Ventral Fins. They provide more vertical tail area (for yaw stability, etc) particularly when the aircraft is at high angle of attack.
Rob McDonald's user avatar
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10 votes
Accepted

What is this strake near the nose of the MD-80 for?

The nose strakes on the DC9-50 and subsequent models are to energise the airflow around the fuselage at high angles of attack. Without the strakes, at high angles of attack, the turbulent flow around ...
DeltaLima's user avatar
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21 votes

What is this strake near the nose of the MD-80 for?

TLDR: They are there to improve directional stability. At high angles of attack, the wake from the fuselage covers the rudder, reducing yaw authority. Strakes mitigate this effect and thereby improve ...
ROIMaison's user avatar
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