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Helicopter Manufacturers Of Poland
A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft and many forms of STOL (Short TakeOff and Landing) or STOVL (Short TakeOff and Vertical Landing) aircraft cannot perform without a runway. In 1942, the Sikorsky R-4 became the first helicopter to reach full-scale production.Munson 1968.Hirschberg, Michael J. and David K. Dailey"Sikorsky". ''US and Russian Helicopter Development in the 20th Century'', American Helicopter Society, International. 7 July 2000. Although most earlier designs used more than one main rotor, the configuration of a single main rotor accompanied by a vertical anti-torque tail rotor (i.e. unicopter, not to be confused with the single-blade monocopter) has become the most common hel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LAPD Bell 206 Jetranger
The Los Angeles Police Department (LAPD), officially known as the City of Los Angeles Police Department, is the municipal Police, police department of Los Angeles, California. With 9,974 police officers and 3,000 civilian staff, it is the third-largest municipal police department in the United States, after the New York City Police Department and the Chicago Police Department. The LAPD has its headquarters at 100 W. 1st St., in the Civic Center, Los Angeles, Civic Center district, not far from the demolished Parker Center it replaced in 2009. The organization of the department is complex, including 21 divisions (stations) grouped in four bureaus in the Office of Operations; multiple divisions within the Detective Bureau in the Office of Special Operations; and specialized units such as SWAT, K-9, mounted police, air support and the Major Crimes Division all within the Counterterrorism and Special Operations Bureau. Further offices support the chief of police in areas such as c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
