Page 291 (or page 2 for ResearchGate publication):
Because the power increases cubically with CL and decreases only quadratically with CD
Hi Doug: What interests me in this paper is the development of very high lift coefficients.
As already discussed the term “drag” in M.Loyd’s context has not the same meaning than in current wind energy. In order to align AWES with regular wind turbines @tallakt uses “hovering” for 16/27 (Betz limit) stationary swept area devices, and “bounding” for 4/27 (1/4 Betz limit) downwind swept area (yo-yo) devices.