anhedral

• “The opposite of dihedral is called anhedral, and, of course, refers to a wing that is angled down.”

  [flight dynamics] twist, dihedral and wingtips

• “Sorry for going off topic, but I would appreciate some more aerodynamics posts: the one on anhedral and dihedral was especially good.”

  [propaganda] predators, women and the ahl

• “All this talk of anhedral and dihedral leads to the question of why one would want use either of these on an aircraft.”

  [flight dynamics] twist, dihedral and wingtips

• “A good example of an aircraft with geometric anhedral is the Sea Harrier:”

  [flight dynamics] twist, dihedral and wingtips

• “To counteract this large amount of dihedral, some geometric anhedral is required.”

  [flight dynamics] twist, dihedral and wingtips

• “This is why most aerobatic planes and military fighters utilize some amount of anhedral.”

  [flight dynamics] twist, dihedral and wingtips

• “DHC DeHavilland Canada (aircraft manufacturer) dihedral upward or positive slope of the wings or tail flats (anhedral is the downward or negative slope)”

  FM 44-80 Visual Aircraft Recognition - Glossary

• “Features of the CH-53K helicopter include: a joint interoperable glass cockpit; fly-by-wire flight controls; fourth generation rotor blades with anhedral tips; a low-maintenance elastomeric rotor head; upgraded engines; a locking cargo rail system; external cargo handling improvements; survivability enhancements; and reduced operation and support costs.”

  The Earth Times Online Newspaper

• “The GE38-1B engine planned for the CH-53K is a derivative of the Oct 30 / 06: Sikorsky Aircraft has submitted test results for its 4th Generation ™ rotor blade, which builds on the work done for the Growth Rotor Blade ™ (GRB) currently used on their new UH-60M and S / H-92 helicopters, using anhedral tips.”

  Defense Industry Daily

• “… and was a fighter but almost all modern fighters use anhedral, e.g. the F18:”

  [flight dynamics] twist, dihedral and wingtips

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