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Pretty pictures! No discussion of cold war airpower is complete without mention of the Tu-22M Backfire. 14 years before we got our poo poo together with the B1, Ivan was cruising around in these babies at Mach 1.88.   The prettiest lady of all is the Tu-160 Blackjack, though it came very late (first service in 1987). This beast can truck along at Mach 2+.    That's a MiG-31 flying alongside in the bottom picture.
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Dec 16, 2010 18:21
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SyHopeful posted:AN-225 sounds similar to what you describe but it's 6-engined It is also the loving bomb. 
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Dec 17, 2010 00:08
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Cyrano4747 posted:You can get a similar effect if you blink your eyes at a regular and semi-quick rate while watching gently caress near any spinning thing.  It's called aliasing, and it's a result of the Nyquist sampling theorem. Things that happen at a frequency faster than half the rate at which you are blinking appear instead to be happening at some frequency related to the sample (blink) rate and the actual frequency. A possibly-familiar example: an anti-aliasing filter removes frequency content higher than f_sample/2 so that it does not alias back into baseband. When you antialias something in photoshop you're eliminating information that has a higher spatial frequency than the sample rate (which in the case of an image is defined by the distance between adjacent pixels). So if you blink at exactly the same rate as the rotor is spinning, it will appear to be completely still. In fact, you can blink at many related rates (2x, 3x, et cetera), and because the rotor is rotationally symmetric, you can blink at even other rates since you can't really tell which blade you're actually seeing in a given position. Note that you can also make the rotor appear to go backwards by doing this; you see this effect a lot with wagon wheels in western films, for example.
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Oct 1, 2012 21:24
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