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2. Ducted fan - Wikipedia

   en.wikipedia.org/wiki/Ducted_fan

   In aeronautics, a ducted fan is a thrust-generating mechanical fan or propeller mounted within a cylindrical duct or shroud. Other terms include ducted propeller or shrouded propeller . [ 1 ] When used in vertical takeoff and landing ( VTOL ) applications it is also known as a shrouded rotor .

3. BioLite - Wikipedia

   en.wikipedia.org/wiki/Biolite

   February - BioLite expands product offering with a second generation of the CampStove, CampStove 2 featuring more power and an onboard battery. The company also launches a 10-watt solar panel and three sizes of battery banks they call Charge 10, Charge 20, Charge 40. September - BioLite launches a smokeless wood-burning fire pit on Kickstarter.

4. High-volume low-speed fan - Wikipedia

   en.wikipedia.org/wiki/High-volume_low-speed_fan

   A High-volume low-speed fan. A high-volume low-speed (HVLS) fan is a type of mechanical fan greater than 7 feet (2.1 m) in diameter. [1] HVLS fans are generally ceiling fans although some are pole mounted. HVLS fans move slowly and distribute large amounts of air at low rotational speed– hence the name "high volume, low speed."

5. Aluminium–air battery - Wikipedia

   en.wikipedia.org/wiki/Aluminium–air_battery

   Another problem is the cost of materials that need to be added to the battery to avoid power dropping. Aluminium is still very cheap compared to other elements used to build batteries. Aluminium costs $2.51 per kilogram while lithium and nickel cost $12.59 and $17.12 per kilogram respectively.

6. Correct Craft - Wikipedia

   en.wikipedia.org/wiki/Correct_Craft

   [12] [13] In September 2013, Correct Craft announced that Aktion Parks was building the Miami Watersports Complex, a 90-acre water sports park. [14] [15] In October 2014, Correct Craft acquired PCM Marine Engines, Crusader Engines Inc., and Levitator Performance Airboat Engines which operate together as Pleasurecraft Engine Group.

7. Submarine power cable - Wikipedia

   en.wikipedia.org/wiki/Submarine_power_cable

   Beginning south of Montreal, a 335-mile line would run along the bottom of Lake Champlain, and then down the bed of the Hudson all the way to New York City." [37] Power Bridge, Hawaii [1] Power Bridge, State of Maine [1] Puerto Rico to the Virgin Islands [38] 400 kV HVDC India to Sri Lanka [39]

8. Rolls-Royce Marine Spey - Wikipedia

   en.wikipedia.org/wiki/Rolls-Royce_Marine_Spey

   The Rolls-Royce Marine Spey is a marine gas turbine based on the Rolls-Royce Spey and TF41 aircraft turbofan engines. [1] The Marine Spey currently powers seven ship classes including the Royal Navy's Type 23 frigates and provides a power output of 19.5 MW (about 26,150HP). The Marine Spey incorporates technology from the Tay and RB211.

9. Ducted propeller - Wikipedia

   en.wikipedia.org/wiki/Ducted_propeller

   The Kort nozzle is a shrouded propeller assembly for marine propulsion. The cross-section of the shroud has the form of a foil, and the shroud can offer hydrodynamic advantages over bare propellers, under certain conditions. Advantages are increased efficiency at lower speeds (<10 knots), better course stability and less vulnerability to debris.