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The vertex arrangement of the 16-cell honeycomb is called the D 4 lattice or F 4 lattice. [2] The vertices of this lattice are the centers of the 3-spheres in the densest known packing of equal spheres in 4-space; [3] its kissing number is 24, which is also the same as the kissing number in R 4, as proved by Oleg Musin in 2003.
A honeycomb-shaped structure provides a material with minimal density and relative high out-of-plane compression properties and out-of-plane shear properties. [1] Man-made honeycomb structural materials are commonly made by layering a honeycomb material between two thin layers that provide strength in tension. This forms a plate-like assembly.
This honeycomb can then be alternated to produce another nonuniform honeycomb with pyritohedral icosahedra, octahedra (as triangular antiprisms), and tetrahedra (as sphenoids). Its vertex figure has C 2v symmetry and consists of 2 pentagons , 4 rectangles , 4 isosceles triangles (divided into two sets of 2), and 4 scalene triangles .
The Boeing Model 247 is an early American airliner, and one of the first such aircraft to incorporate advances such as all-metal (anodized aluminum) semimonocoque construction, a fully cantilevered wing, and retractable landing gear.
The alternated cubic honeycomb is one of 28 space-filling uniform tessellations in Euclidean 3-space, composed of alternating yellow tetrahedra and red octahedra.. In geometry, a convex uniform honeycomb is a uniform tessellation which fills three-dimensional Euclidean space with non-overlapping convex uniform polyhedral cells.
Collection of control yokes at Boeing Future of Flight Museum: 747, 707, B-29, Trimotor.The former two yokes are W-shaped, while the latter two are circular. The cockpit of Concorde, which has an M-shaped yoke mounted on a control column The cockpit of an Embraer ERJ with an M-shaped yoke "W"/"U" style yoke in a Cessna 152 light aircraft, mounted on a horizontal tube protruding from the ...
Honeycomb in the "supers" that are not used for brood (e.g. by the placement of a queen excluder) stays light-colored. Numerous wasps , especially Polistinae and Vespinae , construct hexagonal prism-packed combs made of paper instead of wax; in some species (such as Brachygastra mellifica ), honey is stored in the nest, thus technically forming ...
The SOCATA TBM (now Daher TBM) is a family of high-performance single-engine turboprop business and utility light aircraft manufactured by Daher.It was originally collaboratively developed between the American Mooney Airplane Company and French light aircraft manufacturer SOCATA.
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