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  2. Aircraft noise pollution - Wikipedia

    en.wikipedia.org/wiki/Aircraft_noise_pollution

    Low-flying, high-speed military aircraft produce especially loud aerodynamic noise. The shape of the nose, windshield or canopy of an aircraft affects the sound produced. Much of the noise of a propeller aircraft is of aerodynamic origin due to the flow of air around the blades. The helicopter main and tail rotors also give rise to aerodynamic ...

  3. Bell UH-1 Iroquois - Wikipedia

    en.wikipedia.org/wiki/Bell_UH-1_Iroquois

    The Bell UH-1 Iroquois (nicknamed "Huey") is a utility military helicopter designed and produced by the American aerospace company Bell Helicopter.It is the first member of the prolific Huey family, as well as the first turbine-powered helicopter in service with the United States military.

  4. Sikorsky H-19 Chickasaw - Wikipedia

    en.wikipedia.org/wiki/Sikorsky_H-19_Chickasaw

    In the mid-1980s, the U.S. Army sought an economical helicopter to simulate the sound and radar signature of the Soviet Mil Mi-24 during exercises. OHA sold the Army fifteen modified S-55/Mi-24 s with a new five-bladed rotor system, which was quieter than the original three-bladed rotor and made the aircraft sound similar to an Mi-24.

  5. Here’s why you may soon see an uptick in military aircraft ...

    www.aol.com/why-may-soon-see-uptick-012047888.html

    Here’s why you may soon see an uptick in military aircraft flying over Miami-Dade. Omar Rodríguez Ortiz ... 24-25 will include military planes and helicopters soaring in the sky, the Miami-Dade ...

  6. Airwolf (helicopter) - Wikipedia

    en.wikipedia.org/wiki/Airwolf_(helicopter)

    Airwolf is the helicopter from the 1980s American television series of the same name. Its fictional features included stratospheric ceiling, stealth noise signature, a wide range of weapons and supersonic speed. The Airwolf helicopter was a conventional Bell 222 helicopter modified by attaching some film props.

  7. Are more planes flying over Boise? Not quite, but they sound ...

    www.aol.com/more-planes-flying-over-boise...

    Usually, sound travels at 343 meters per second, but its speed can increase by as much as 10% in a warmer atmosphere and, inversely, be up to 10% slower in colder temperatures. When there’s a ...

  8. Stealth helicopter - Wikipedia

    en.wikipedia.org/wiki/Stealth_helicopter

    Stealth helicopters are helicopters that incorporate stealth technology to decrease an enemy's detection ability. [1] There are a diverse range of technologies used to achieve this decreased detectability; these have largely involved the reduction of several different signatures typically generated by a rotorcraft, including those of noise ...

  9. Have you seen a low-flying helicopter over Providence? Here's ...

    www.aol.com/seen-low-flying-helicopter-over...

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