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The vortex ring state (VRS) is a dangerous aerodynamic condition that may arise in helicopter flight, when a vortex ring system engulfs the rotor, causing severe loss of lift. Often the term settling with power is used as a synonym, e.g., in Australia, the UK, and the US, [2] [3] [4] but not in Canada, which uses the latter term for a different ...
(bottom) vortex ring parachute deployed Project Sense and Destroy Armor , or SADARM , is a United States 'smart' submunition capable of searching for, and destroying tanks within a given target area.
Spark photography image of a vortex ring in flight. A vortex ring, also called a toroidal vortex, is a torus-shaped vortex in a fluid; that is, a region where the fluid mostly spins around an imaginary axis line that forms a closed loop. The dominant flow in a vortex ring is said to be toroidal, more precisely poloidal. [clarification needed]
As the V-22 descended to land it was dropping at 2,000 feet a minute, well above the prescribed 800 feet a minute. The speed caused the aircraft to enter an aerodynamic condition known as vortex ring state. In this condition, a vortex envelops the rotor, causing an aircraft to lose lift, in essence descending in its own downwash. [6] [7]
The US Navy and Marines grounded their fleets of V-22 Ospreys pending the outcome of the CV-22 investigation. [ 83 ] On 3 January 2024 it was announced that the Flight Data and Cockpit Voice Recorders had been located and would be transported to laboratories for data retrieval, a process that would take several weeks.
A major cold blast is in store for millions of Americans as a lobe of a polar vortex will bring brutally cold temperatures to nearly every American east of the Rockies. ... 800-290-4726 more ways ...
Records are being shattered and communities are enduring the harshest cold in decades as the polar vortex tightens its grip on the midwestern United States.
Main rotor disk vortex interference Weathercock stability Tail rotor vortex ring state. Loss of tail-rotor effectiveness (LTE) [1] occurs when the tail rotor of a helicopter is exposed to wind forces that prevent it from carrying out its function—that of cancelling the torque of the engine and transmission. Any low-airspeed high-power ...