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2. Nap-of-the-earth - Wikipedia

   en.wikipedia.org/wiki/Nap-of-the-earth

   The lowest NOE flying is by helicopters because they have lower speeds and more maneuverability than fixed-wing aircraft, particularly fast jets. Helicopters can fly at treetop levels or even below the height of surrounding trees where there are clear areas (such as in river gullies), [ 1 ] flying under wires (such as electricity cables) rather ...

3. Range (aeronautics) - Wikipedia

   en.wikipedia.org/wiki/Range_(aeronautics)

   Maximum Endurance and Range versus airspeed. The maximum endurance condition would be obtained at the point of minimum power required since this would require the lowest fuel flow to keep the airplane in a steady, level flight. Maximum range condition would occur where the ratio of speed to power required is greatest.

4. Critical Mach number - Wikipedia

   en.wikipedia.org/wiki/Critical_Mach_number

   Transonic flow patterns on an aircraft wing, showing the effects at and above the critical Mach number. In aerodynamics, the critical Mach number (Mcr or M*) of an aircraft is the lowest Mach number at which the airflow over some point of the aircraft reaches the speed of sound, but does not exceed it. [1]

5. V speeds - Wikipedia

   en.wikipedia.org/wiki/V_speeds

   Stall speed or minimum steady flight speed for which the aircraft is still controllable. [7] [8] [9] V S 0: Stall speed or minimum flight speed in landing configuration. [7] [8] [9] V S 1: Stall speed or minimum steady flight speed for which the aircraft is still controllable in a specific configuration. [7] [8] V S R: Reference stall speed. [7 ...

6. True airspeed - Wikipedia

   en.wikipedia.org/wiki/True_airspeed

   Here the speed is displayed both in knots (kn) and miles per hour (mph). The true airspeed (TAS; also KTAS, for knots true airspeed) of an aircraft is the speed of the aircraft relative to the air mass through which it is flying. The true airspeed is important information for accurate navigation of an aircraft.

7. A new tool uses legal loopholes to get you cheaper flights by ...

   www.aol.com/news/tool-uses-legal-loopholes...

   DoNotPay, an automated legal tool, is branching out into helping users book airline tickets, it announced on Monday. A new tool uses legal loopholes to get you cheaper flights by checking prices ...