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Shock diamonds are the bright areas seen in the exhaust of this statically mounted Pratt & Whitney J58 engine on full afterburner.. Shock diamonds (also known as Mach diamonds or thrust diamonds, and less commonly Mach disks) are a formation of standing wave patterns that appear in the supersonic exhaust plume of an aerospace propulsion system, such as a supersonic jet engine, rocket, ramjet ...
A vapor cone (also known as a Mach diamond, [1] shock collar, or shock egg) is a visible cloud of condensed water that can sometimes form around an object moving at high speed through moist air, such as an aircraft flying at transonic speeds. When the localized air pressure around the object drops, so does the air temperature.
A schematic diagram of a shock wave situation with the density , velocity , and temperature indicated for each region.. The Rankine–Hugoniot conditions, also referred to as Rankine–Hugoniot jump conditions or Rankine–Hugoniot relations, describe the relationship between the states on both sides of a shock wave or a combustion wave (deflagration or detonation) in a one-dimensional flow in ...
Placing a diamond-shaped object at an angle of attack relative to the supersonic flow streamlines will result in two oblique shocks propagating from the front tip over the top and bottom of the wing, with Prandtl-Meyer expansion fans created at the two corners of the diamond closest to the front tip. When correctly designed, this generates lift.
Shock diamond From the plural form : This is a redirect from a plural noun to its singular form. This redirect link is used for convenience; it is often preferable to add the plural directly after the link (for example, [[link]]s ).
Phase diagram of the Ramsey model, for the case of () =, and ,,, =,,,. Phase space graph (or phase diagram) of the Ramsey model. The blue line represents the economy's dynamic adjustment (or saddle) path in which all the constraints present in the model are satisfied.
At the minimum flow area, or throat, a normal or plane shock occurs. The flow area then increases for subsonic compression, or diffusion, up to the engine face. The position of the cone within the intake is usually controlled automatically to keep the plane shock wave correctly located just downstream of the throat.
These disks are what form at the nozzle exit and at each repeating node of a diamond; this article is about such repeating patterns. The lead sentence actually errs slightly when it implies "Mach disk" is a synonym for shock diamond, which it isn't exactly. The geometry of expanding flow from a volcanic eruption doesn't look like it is ...