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  2. Steam generator - Wikipedia

    en.wikipedia.org/wiki/Steam_generator

    A Steam generator is a device used to boil water to create steam. More specifically, it may refer to: Boiler (steam generator), a closed vessel in which water is heated under pressure

  3. Helicol - Wikipedia

    en.wikipedia.org/wiki/Helicol

    Helicol was founded on July 3, 1955, as a response to the needs of the oil exploration activities in Colombia.Initially it was a joint venture between Philadelphia, Pennsylvania based Keystone Helicopters Corporation, and Avianca; as Keystone had signed a contract with Shell Oil Company to run oil exploration activities in the north side of the Country.

  4. Helical antenna - Wikipedia

    en.wikipedia.org/wiki/Helical_antenna

    A helical antenna is an antenna consisting of one or more conducting wires wound in the form of a helix.A helical antenna made of one helical wire, the most common type, is called monofilar, while antennas with two or four wires in a helix are called bifilar, or quadrifilar, respectively.

  5. Piasecki X-49 SpeedHawk - Wikipedia

    en.wikipedia.org/wiki/Piasecki_X-49_SpeedHawk

    The Piasecki X-49 "SpeedHawk" is an American four-bladed, twin-engined experimental high-speed compound helicopter developed by Piasecki Aircraft.The X-49A is based on the airframe of a Sikorsky YSH-60F Seahawk, but utilizes Piasecki's proprietary vectored thrust ducted propeller (VTDP) design and includes the addition of lifting wings.

  6. Bell 525 Relentless - Wikipedia

    en.wikipedia.org/wiki/Bell_525_Relentless

    Bell announced its new project after the Bell 429 and Bell V-22, the super medium Bell 525, previously it was known as Project X or Magellan. The Helicopter is overall designed for trips of 50 to 500 nautical miles, and has a 5-blade main rotor powered by twin engines, digital controls and Garmin G5000H screen, with planned seating for 16-20 people. [3]

  7. Airbus Helicopters - Wikipedia

    en.wikipedia.org/wiki/Airbus_Helicopters

    Airbus Helicopters SAS (formerly Eurocopter S.A., trading as Eurocopter Group) is the helicopter manufacturing division of Airbus.It is the largest in the industry in terms of revenues and turbine helicopter deliveries, holding 48% of the worldwide market share as of 2020. [3]