Theory Validation - 2 Points of View

Harris, Franklin D

关键词: PROPELLERS;    PROPELLER BLADES;    VERTICAL TAKEOFF AIRCRAFT;    ROTARY WING AIRCRAFT;    LIFTING ROTORS;    AIRCRAFT DESIGN;    HELICOPTER DESIGN;    FIGURE OF MERIT;    AERODYNAMIC COEFFICIENTS;    HOVERING;    AIRCRAFT WAKES;    COMPUTATIONAL FLUID DYNAMICS;    GRAPHS (CHARTS);   

RP-ID  :  ARC-E-DAA-TN50729

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

The task of validating any given theory against any given proprotor/propeller data set is of immense importance. Not just to the researchers who are developing a theory, but to the working engineers using the theory to design a proprotor/propeller. However, there is major difference in how the two groups see validation. This difference is that, most frequently, researchers see the validation in coefficient form as, for example, CP versus CT or Figure of Merit versus CT. In contrast, design engineers are always working in the dimensional world as, for example, horsepower required to hover versus aircraft weight. The objective of the design engineer is, of course, to release drawings and specifications to manufacturing so a VTOL aircraft will be built with reasonably high assurance that the aircraft will meet the primary specifications.