Blue Angel more low pressure, pulls toward viewer DSC_0752 v.2

            The condensation is caused by suddenly lowered air pressure. Water vapor in the air condenses into droplets, very briefly, then evaporates back to vapor.

The pilot has rolled to the left, then pulled the nose "up". The wing's  '"lift", at this angle. is accelerating the plane  toward us. The lift comes from increased pressure under the wing, and decreased pressure above. The low pressure is pretty evenly spread across the "top" of the wing. 

The four "streamers", two from the wing tips and two from the sharply swept wing root up by the cockpit, are vortexes. High pressure underneath escapes around the edges, and spirals. On the left, lower, side, viewed from behind, the spin is clockwise. On the right, the upper, side, viewed from the back, the spin is counter-clockwise. You can see symmetrical patterns of the air being 'wound up' about half way along the extended leading edge, between the cockpit and the much-less-swept main part of the wing.

Note the angle between the streamers and the fore-and-aft axis of the plane. The streamers show the path of the plane through the air. The nose is seriously "above" the path the plane is flying, hence the big pressure differences.

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Taken on: October 10, 2015

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Camera: Nikon D40X, f/5.6, 1/1250 sec, 300mm (=450mm), ISO 200 (more info) (hide info)

Camera:	Nikon D40X
Lens:	AF-S DX VR Nikkor 55-300mm 4.5-5.6G ED
Aperture:	f/5.6
Exposure Time:	0.001 sec (1/1250)
Focal Length:	300mm (35mm equivalent: 450mm)
ISO:	200
Exposure Bias:	0 EV
Flash:	Off, Did not fire
Exposure Program:	Not Defined
Exposure Mode:	Auto
Metering Mode:	Multi-segment
White Balance:	Auto
Contrast:	High
Color Space:	sRGB
Software:	Photos 1.0.1
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