anhedral

Wings angled downward

Anhedral describes a downward angle of aircraft wings relative to the horizontal—the opposite of dihedral, where wings angle upward.

This configuration reduces stability, which is desirable in highly maneuverable aircraft like fighter jets: The F-104 featured pronounced anhedral in its tailplane.

In crystallography, anhedral describes mineral grains that lack well-developed crystal faces.

wing-design

aircraft

Airborne transportation vehicle

aerofoil · lift · drag · wing · aviation · swept-wing · tailplane · fuselage · maneuverability · configuration

flight-behavior

roll

List of names

  • stabilityResistance to displacement
  • bankPlace holding deposits
  • yawRotational side deviation

pitch · oscillation · turbulence · aileron · stall · buffeting · flutter · perturbation · slipstream · sideslip

crystallography

crystal

Ordered-atom solid

  • mineralNaturally formed crystalline solid
  • faceHead's anterior surface
  • geometryScience of spatial relationships

solid · lattice · symmetry · facet · euhedral · grain · texture · igneous · formation · growth

Opposites
crystal face development

anhedraleuhedral

Perfectly faced crystal

well-formed · faceted

wing angle geometry

anhedraldihedral

Angle joining two planes

upswept · cathedral

Family

dihedral, polyhedron, octahedron, tetrahedron, dodecahedron, tetrahedral, polyhedral, hexahedron, octahedral

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Used worldwide · Timeless · Rated G