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Main rotor
On a helicopter, the main rotor or rotor system is the combination of several rotary wings (rotor blades) with a control system, that generates the aerodynamic lift force that supports the weight o
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Refrigerated container
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Cargo helicopter
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,
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Refrigerator ship
A reefer ship is a refrigerated cargo ship typically used to transport perishable cargo, which require temperature-controlled handling, such as fruits, meat, vegetables, dairy products, and similar
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Spanish navy
This article includes a list of general references, but it lacks sufficient corresponding inline citations.Please help to improve this article by introducing more precise citations. (August 2022 )
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Merchant raider
Merchant raiders are armed commerce raiding ships that disguise themselves as non-combatant merchant vessels.RMS Carmania sinking SMS Cap Trafalgar near the Brazilian islands of Trindade, 14 Septem
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Zheng Jing
Zheng Jing, Prince of Yanping (Chinese: 鄭經 ; Pe̍h-ōe-jī: Tīⁿ Keng; 25 October 1642 – 17 March 1681), courtesy names Xianzhi (Chinese: 賢之 ; Pe̍h-ōe-jī: Hiân-chi) and Yuanzhi (Chinese: 元之 ; Pe̍h-ōe-j
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Roger Taney
Roger Brooke Taney (/ˈ t ɔː n i / TAW -nee; March 17, 1777 – October 12, 1864) was an American lawyer and politician who served as the fifth chief justice of the United States, holding that office
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Douglas Carter
Sir Douglas Julian Carter KCMG (5 August 1908 – 7 November 1988) was a New Zealand politician of the National Party.Carter in 1959BiographyNew Zealand Parliament Years Term Electorate Party1957–196
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Beam engine
A beam engine is a type of steam engine where a pivoted overhead beam is used to apply the force from a vertical piston to a vertical connecting rod. This configuration, with the engine directly dr
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