Kallita Air departing Schiphol Airport for New York with tons of freight on board 😍
Did you know that Qatar Airways' A350 has one of the most beautiful bankings?
Another evening shot, and another A319! How many A319s can I post in a row? 🤔 @lufthansa’s D-AILY heads back to Munich 🇩🇪
Ok, this one took some work to research.
Back in 1974, students and faculty at West Virginia University (WVU) built a Bede BD-4 experimental aircraft.
They then modified it extensively with a blown leading edge and deployable circular trailing edge Coanda flaps.
The flaps are shown here in a video courtesy of Alejandro Posada via YouTube.
The entire wing and flap system was known as a CCW, or Circular Control Wing airfoil.
The aircraft was powered by a standard reciprocating engine, but it also carried a 200 horsepower auxiliary power unit (APU) to provide compressed air for the aerodynamic wizardry.
In the end, several objectives were achieved...it provided low drag/high wing loading for cruise while also providing variable drag/low wing loading for takeoff and landing.
Additionally, it provided a low deck angle (and great visibility) during approach, and a relatively low stall speed of approximately 26 knots.
In 1979, perhaps inspired by the WVU program, the US Navy retrofitted a similar system to a Grumman A-6A Intruder.
Significantly more complex, the system ducted bleed air from the engines to circular, non-retractable circular control trailing edge.
The system also provided bleed air to wingtip jets to improve adverse yaw tendencies.
As you can see by the chart, the results were significant.
At weights ranging from 33,000 lbs (14,969 kg) to 35,700 lbs (16,193 kg), takeoff and landing ground rolls were reduced by 60% and 65%, respectively.
And amazingly, the approach speed was reduced from 118 kts down to a mere 76 kts.
The CCW technology never progressed beyond experimental studies, presumably due to the increased weight and complexity involved in the design.
But the experiments are certainly an interesting footnote in the dusty, forgotten corners of aviation history. ⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀ ⠀ ⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ #avgeek #aircraft #aviation #pilot #avpic #avpics #instaplane #instapilot #instaaviation #flight #flying #plane #planes #airplane #instagramaviation #aircraftrecognition #cessnateur #wvu #bede #grumman #a6intruder #flighttest
Jennifer from Easy Jet 🛩🇬🇧
Kimberley from Virgin Atlantic 🛩🇺🇸
Rebekka from Norwegian 🛩 🇳🇴