The phrase "aerodynamic efficiencies" is correct and usable in written English.
It can be used when discussing the effectiveness of an object, such as a vehicle or aircraft, in reducing drag and improving performance through its shape and design.
Example: "The new car model boasts significant aerodynamic efficiencies, allowing it to achieve better fuel economy and higher speeds."
Alternatives: "streamlined efficiencies" or "drag-reducing efficiencies".
The latest generation of airplanes — Boeing's 787 and Airbus's A350 — do not have wingtips, but their wings have a raked design that provides similar aerodynamic efficiencies.
ATD was measured from engine efficiencies, aerodynamic efficiencies, and structural efficiencies [4, 51].
Aerodynamic efficiencies were evaluated in term of lift/drag (L/D) ratio [74]; higher value of lift/drag ratio can result in improved fuel efficiency.
Lee [30] and Raffi Babikian [34] studied the technological influence on the energy usage on the basis of engine efficiencies, structural technology, and aerodynamic efficiencies.
The use of CFD in measuring flow over a vehicle platoon further establishes CFD as another effective design tool in improving the aerodynamic efficiencies of automobiles.
Moreover the aircraft technological efficiency is described by three aircraft performance metrics: engine efficiencies are expressed in terms of thrust specific fuel consumption (TSFC), aerodynamic efficiencies are measured in terms of maximum lift over drag ratio (Lmax/D) and structural efficiency is quantified using operating empty weight (OEW) divided by maximum takeoff weight (MTOW) [19, 20].
They are: propulsive efficiency (how efficient are your engines?); aerodynamic efficiency (is lift maximised and drag minimised?); and structural efficiency (how much payload can you carry?).
One was aerodynamic efficiency; the other was also related to aerodynamics because we could only run the car on a very low ride height, not on a high ride height.
It also demands extreme aerodynamic efficiency and lightness.
And the rump is unusually high -- for aerodynamic efficiency, BMW says.
The design is driven by light weight and aerodynamic efficiency, he said.
