dihedral


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Related to dihedral: dihedral group, dihedral effect

dihedral

1. having or formed by two intersecting planes; two-sided
2. the figure formed by two intersecting planes
3. the upward inclination of an aircraft wing in relation to the lateral axis

dihedral

[dī′hē·drəl]
(aerospace engineering)
The upward or downward inclination of an airplane's wing or other supporting surface in respect to the horizontal; in some contexts, the upward inclination only.
(mathematics)
References in periodicals archive ?
Figure 1: Dihedral angle (the angle formed by the plane created by atoms A, B, and C, and the plane created by atoms B, C, and D)
It can be seen from Figure 3 that although dihedral angles of point on saddle weld differ from each other, they all have certain relationship with pose angle.
We incorporated the H/A/Alpha method to increase the accuracies of the three scattering components (surface, volume, and dihedral).
The bond lengths, dihedral angles, energy gaps, frontier molecular orbitals, electron injection, and recombination of the optimized molecules were calculated.
The more important dihedral angles observed in dehydrated lisinopril are 175.7(4)[degrees] (C14-C15-C16-C17), 179.6(2)[degrees] (C9-C8-C7-C1), -5.2(3)[degrees] (N22-C26-C27-O28), -76.8(1)[degrees] (O21-C20-C14-N13), 0.26(1)[degrees] (O21-C20-N22-C26), -69.3(2)[degrees] (C16-C17-C18-N19), and -17.5(4)[degrees] (N13-C9-C10-O11).
Like the i8 Coupe - first launched in 2014 - the i8 Roadster has dihedral doors that open upwards and outwards, but comes with a fabric roof that can be operated at speeds of up to 31mph opening and closing in 16 seconds at the touch of a button.
When this technique is applied to another rigid system, where the dihedral angle are locked, but the system is non-planar, complications arise.
This results in the formation of a big, essential planar heterocyclic ring system with 4.349[degrees] and 5.217[degrees] dihedral angle between the newly formed ether ring and the two original coumarin rings, respectively.
Woven carbon fiber is used in the upper structure, which is made up of a few individual pieces and pre-bonded to, as Thomson puts it, "form the upper portion of the Easter egg." Replacing the metallic elements with carbon fiber allowed the engineers to make slimmer A-pillars, larger door openings, and design dihedral doors that open at an 80-degree angle in order to decrease the space needed to fully open the doors.
The dihedral of the wings and especially the horizontal stabilizers is quite different from the B-25, not to mention that the planes in the photo have a single vertical stabilizer (the B-25 of course has dual vertical stabilizers).