fluid tail
If one looks at Sighard Hoerner's 'Aerodynamic Drag,' there's a discussion of bullets and artillery projectiles, like Barrett's triple-ringed, boat-tailed sniper round, and the US ARMY's howitzer, 'Aberdeen' supersonic artillery projectile.
As these structures advance through the air, there's a jet-pumping action, attempting to pump the wake full of air, as an airship experiences when the thick turbulent boundary layer sloughs off the rear of the envelope, filling a rather blunt, steeply-sloped rear, creating a 'phantom' ( fluid ) tail.
Dornier found out in the 1920s that you could lob off about 5% of the trailing surface of wings, and they'd fly as if 100%.
Aft-fuselage gun turrets use the same phenomena.
Some high-end golf clubs ( 'woods').
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Last edited by aerohead; 08-18-2022 at 06:31 PM..
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