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  2. Disk loading - Wikipedia

    en.wikipedia.org/wiki/Disk_loading

    For a helicopter that is hovering, the aerodynamic force is vertical and exactly balances the helicopter weight, with no lateral force. The downward force on the air flowing through the rotor is accompanied by an upward force on the helicopter rotor disk. The downward force produces a downward acceleration of the air, increasing its kinetic energy.

  3. Packet Tracer - Wikipedia

    en.wikipedia.org/wiki/Packet_Tracer

    Packet Tracer allows students to design complex and large networks, which is often not feasible with physical hardware, due to costs. [7] Packet Tracer is commonly used by NetAcad students, since it is available to download after creating a free account. [ 10 ]

  4. Wire strike protection system - Wikipedia

    en.wikipedia.org/wiki/Wire_strike_protection_system

    The system is typically mounted around the front of American military helicopters, [6] rescue helicopters and of civilian helicopters involved in agricultural work. It is effective when the helicopter strikes the wires at angle of less than 90 degrees and at speeds more than 30 knots (35 mph; 56 km/h). [ 7 ]

  5. Autorotation - Wikipedia

    en.wikipedia.org/wiki/Autorotation

    It is a common emergency procedure taught to helicopter pilots as part of their training. In normal powered helicopter flight, air is drawn into the main rotor system from above and forced downward, but during autorotation, air moves into the rotor system from below as the helicopter descends.

  6. Dissymmetry of lift - Wikipedia

    en.wikipedia.org/wiki/Dissymmetry_of_lift

    Dissymmetry of lift in an American-style helicopter. Consider a single-rotor helicopter in still air. For a stationary (hovering) helicopter, whose blades of length of r metres are rotating at ω radians per second, the blade tip is moving at a speed rω meters per second. As the blades rotate, the speed of the blade-tips relative to the air ...

  7. 2 dead, 19 hurt when plane slams into Fullerton warehouse ...

    www.aol.com/news/1-killed-15-injured-small...

    Data from flight tracker FlightAware showed a plane leaving the small airport at 2:07 p.m. before its flight ended at 2:09 p.m., which is the time that police said they received a notification ...

  8. Honeywell T55 - Wikipedia

    en.wikipedia.org/wiki/Honeywell_T55

    The Honeywell T55 (formerly Lycoming; company designation LTC-4) is a turboshaft engine used on American helicopters and fixed-wing aircraft (in turboprop form) since the 1950s, and in unlimited hydroplanes since the 1980s. As of 2021, more than 6,000 of these engines have been built. [1]

  9. 40 Best New Year's Sales to Shop, According to Bazaar Editors

    www.aol.com/22-best-end-sales-shop-140000844.html

    We found the best end-of-year, Boxing Week, and New Year's sales on fashion, beauty, and home. Score up to 70 off at stores like Nordstrom, Alo, and more.