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  2. Black triangle (UFO) - Wikipedia

    en.wikipedia.org/wiki/Black_triangle_(UFO)

    There is little evidence to support the TR-3's existence; however, it is possible that black triangle UFO reports associated with Black Manta could be a technology demonstrator for a potential new-generation tactical reconnaissance aircraft, and/or that TR-3 refers to a Technical Refresh of an existing program. [22] [23]

  3. TR3 - Wikipedia

    en.wikipedia.org/wiki/TR3

    TR-3 Black Manta, a spyplane and black program by the USAF; Lyulka TR-3, a 1940s Soviet jet engine; TR.3, a 1940s Canadian jet engine design study; Other uses

  4. Triumph TR3 - Wikipedia

    en.wikipedia.org/wiki/Triumph_TR3

    The rugged ‘sidescreen’ TR, so named for its use of removable plexiglass side curtains, was a sales and motorsport success. With approximately 74,800 TR3s sold across all variants, the model was the company's third best seller in the TR range, behind the TR7 (111,500 units) and TR6 (94,500 units) models.

  5. Outboard motor - Wikipedia

    en.wikipedia.org/wiki/Outboard_motor

    The pivoting design allows the outboard motor to be swiveled by the operator in almost all directions: Sideways for direction, up and down to change the thrust line according to speed or bow lift, elevate completely out of water for easy starting, placing the drive shaft and the propeller forward along the side of the boat for reverse, or put ...

  6. Motorboat - Wikipedia

    en.wikipedia.org/wiki/Motorboat

    A motorboat with an outboard motor. A motorboat or powerboat is a boat that is exclusively powered by an engine; faster examples may be called "speedboats".. Some motorboats are fitted with inboard engines, others have an outboard motor installed on the rear, containing the internal combustion engine, the gearbox and the propeller in one portable unit.

  7. TR3A - Wikipedia

    en.wikipedia.org/wiki/TR3A

    TR-3A Black Manta, speculated USAF spyplane This page was last edited on 8 September 2020, at 14:46 (UTC). Text is available under the Creative Commons Attribution ...

  8. Power take-off - Wikipedia

    en.wikipedia.org/wiki/Power_take-off

    A PTO at the rear end of a farm tractor A PTO (in the box at the bottom) in the center of the three-point hitch of a tractor. A power take-off or power takeoff (PTO) is one of several methods for taking power from a power source, such as a running engine, and transmitting it to an application such as an attached implement or separate machine.

  9. Liftboat - Wikipedia

    en.wikipedia.org/wiki/Liftboat

    The boat was declared a total loss at an estimated cost of $1.14 million. The Ram XVIII was a 215-foot liftboat, built in 2015 and owned by Aries Marine Corporation in Lafayette, Louisiana . The National Transportation Safety Board (NTSB) determined that the probable cause of the accident was an industry failure of not providing liftboat ...