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In a swept wing, airflow ideally moves from front to back (chordwise flow) but can also move down the span of the wing (spanwise flow) which is wasteful and can cause the outer wing to stall first. Since the ailerons are on the outer wings, spanwise flow must be prevented so the ailerons don't lose their effectiveness near a stall. Early fighter jets like the MiG-17 used prominent wing fences to prevent spanwise flow. Less-drag inducing are vortilons like the four yellow-painted "teeth" on the outer leading edge of N696AE here. Vortilons were first used on the Douglas DC-9 and are on a wide variety of aircraft and not just the ERJ-145 family- for example, the 737NG has three small vortilons on each wing. They create a vortex that not only energizes the boundary layer increasing lift, but the vortex itself streaming over the leading edge and back also blocks spanwise flow. Not all swept wing aircraft need vortilons, though. #Avgeek #aviation #aircraft #planeporn #nikon #d7000 #dslr #kdfw #dfw #airport #airplane_lovers #igtexas #squareready #planespotting #airlines #megaplane #instaplane #embraer #erj145 #americaneagle #dfwavgeek #avgeekschoolofknowledge #instadfw #instagramaviation #igaviationcontest #N696AE #avgeekschoolofknowledge #wearetxgmers
With the new American colors, it should be a lot easier for the Boeing 767 and 777 to share radomes. They're actually interchangeable parts which isn't surprising given that the cockpit and part of the nose section of the 777 is near identical to that of the 767 from a structural standpoint. With the older American colors, if you saw a 767 or 777 where the cheatlines on the radome didn't quite match the cheatlines on the fuselage, odds are it's got the other type's nose cone/radome. The cheatlines misalign when you swap radomes. With the new American colors, this won't be an issue any longer. #Avgeek #aviation #aircraft #planeporn #nikon #d7000 #dslr #kdfw #dfw #airport #airplane_lovers #igtexas #squareready #planespotting #airlines #megaplane #instaplane #boeing #777 #american #dfwavgeek #instagramaviation #n752an #instadfw #igaviationcontest #avgeekschoolofknowledge #wearetxgmers
It was a long day. #squareready #biglens #boy #child #igerschildren #pensive #thumbsucking #tired #bw #blackandwhite
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Driveway Spotting! Pool maintenance done, one of the cars washed, what better way to enjoy a nice warm day than to do some #drivewayspotting? American 767-300ER, N389AA outbound from DFW. #Avgeek #aviation #aircraft #planeporn #nikon #d7000 #dslr #kdfw #dfw #airport #airplane_lovers #igtexas #squareready #planespotting #airlines #megaplane #instaplane #boeing #767 #american #dfwavgeek #instagramaviation #avgeekschoolofknowledge #igaviationcontest #instadfw #wearetxgmers #n389aa #avgeekery
N908NN passes abeam Founders' Plaza for 18R. Of the over 7400 Boeing 737s delivered since the introduction of the 737-100, over 2700 are 737-800s and this doesn't include the P-8A Poseidon which is based on the -800. This makes the -800 the most successful 737 variant of the entire family. #Avgeek #aviation #aircraft #planeporn #nikon #d7000 #dslr #kdfw #dfw #airport #airplane_lovers #igtexas #squareready #planespotting #airlines #megaplane #instaplane #boeing #737 #american #dfwavgeek #instagramaviation #N908NN #avgeekschoolofknowledge #avgeekery