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Principal axes. Normal axis, or yaw axis — an axis drawn from top to bottom, and perpendicular to the other two axes, parallel to the fuselage or frame station. Transverse axis, lateral axis, or pitch axis — an axis running from the pilot's left to right in piloted aircraft, and parallel to the wings of a winged aircraft, parallel to the ...
Publication date. 1842. " The Pit and the Pendulum " is a short story by American writer Edgar Allan Poe and first published in 1842 in the literary annual The Gift: A Christmas and New Year's Present for 1843. The story is about the torments endured by a prisoner of the Spanish Inquisition, though Poe skews historical facts.
A crossed helical gear is a gear that operate on non-intersecting, non-parallel axes. The term crossed helical gears has superseded the term spiral gears. There is theoretically point contact between the teeth at any instant. They have teeth of the same or different helix angles, of the same or opposite hand.
To be, or not to be. Comparison of the "To be, or not to be" speech in the first three editions of Hamlet, showing the varying quality of the text in the Bad Quarto, the Good Quarto and the First Folio. " To be, or not to be " is a speech given by Prince Hamlet in the so-called "nunnery scene" of William Shakespeare 's play Hamlet (Act 3, Scene 1).
The Euler or Tait–Bryan angles (α, β, γ) are the amplitudes of these elemental rotations. For instance, the target orientation can be reached as follows (note the reversed order of Euler angle application): The XYZ system rotates about the z axis by γ. The X axis is now at angle γ with respect to the x axis.
The pith helmet, also known as the safari helmet, salacot, [a] sola topee, sun helmet, topee, and topi[b] is a lightweight cloth-covered helmet made of sholapith. [1] The pith helmet originates from the Spanish military adaptation of the native salakot headgear of the Philippines. [2][3] It was often worn by European travellers and explorers in ...
A yaw motion is a side-to side movement of the bow and stern of the ship. The transverse/Y axis, lateral axis, or pitch axis is an imaginary line running horizontally across the ship and through the centre of mass. A pitch motion is an up-or-down movement of the bow and stern of the ship. The longitudinal/X axis, or roll axis, is an imaginary ...
Pith, or medulla, is a tissue in the stems of vascular plants. Pith is composed of soft, spongy parenchyma cells, which in some cases can store starch. In eudicotyledons, pith is located in the center of the stem. In monocotyledons, it extends only into roots. [1] The pith is encircled by a ring of xylem; the xylem, in turn, is encircled by a ...