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2. Ground effect (aerodynamics) - Wikipedia

   en.wikipedia.org/wiki/Ground_effect_(aerodynamics)

   The deflected or "turned" flow of air creates a resultant force on the wing in the opposite direction (Newton's 3rd law). The resultant force is identified as lift. Flying close to a surface increases air pressure on the lower wing surface, nicknamed the "ram" or "cushion" effect, and thereby improves the aircraft lift-to-drag ratio.

3. PAR thrust - Wikipedia

   en.wikipedia.org/wiki/PAR_thrust

   Power Augmented Ram thrust (or PAR thrust for short) is the use of displaced air in enhancing the air cushion under the wings or body of what is normally a Wing In Ground-effect or WIG craft. The system can also be used in surface effect ships to increase their top speed.

4. Momentum curtain - Wikipedia

   en.wikipedia.org/wiki/Momentum_curtain

   So, with the same input power, a greater amount of lift could be developed, and the hull could be lifted higher above the surface, reducing friction and increasing clearance. This theory was tried, tested and developed throughout the 1950s and 1960s until it was finally realised in full-scale in the SR-N1 hovercraft.

5. Landing Craft Air Cushion - Wikipedia

   en.wikipedia.org/wiki/Landing_Craft_Air_Cushion

   The four main engines are all used for lift and all used for main propulsion while two smaller auxiliary generator engines, Auxiliary Power Units (APU), provide craft electrical power.. The craft can continue to operate, at reduced capability, with two engines inoperable, one lift fan inoperable, and one APU inoperable.

6. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   homepage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

7. Powered lift - Wikipedia

   en.wikipedia.org/wiki/Powered_lift

   A powered lift aircraft takes off and lands vertically under engine power but uses a fixed wing for horizontal flight. Like helicopters , these aircraft do not need a long runway to take off and land, but they have a speed and performance similar to standard fixed-wing aircraft in combat or other situations.