In closing I want to emphasize the preceding text is given simply to explain the very complicated procedures required to make the claim that an exhaust system is “Tuned”.
Leading Edge Exhaust Systems, LLC, (LEES) has never used this term in any advertising and probably never will. The next time you hear the word “Tuned”, a “buzzword” as I call it, ask the company or person, (s) making the claims to show you how they came to that conclusion; formulae and calculations. The formula might dictate the primary tubes and collectors are required to be so long that they would not fit within the cowling and you might not be able to access the, all important, exhaust flange nuts. Some of the exhaust components we manufacture are direct replacements and must be able to attach to existing mufflers and tailpipes.
The contraction of the Hadley cells at the SGM explains the southward displacement (weakening) of the monsoons associated with the Hadley circulation (figure 54 f), and the decrease in wind strength at the Santa Barbara basin that increases precipitation (figure 54 e). The expansion of the polar cells explains the increase in wind strength over Iceland (figure 52 d), that appears to depend on Milankovitch forcing. With the expansion of the polar cells there is an increase in polar circulation driven by the strengthening of the Siberian high, that produces an increase in salt deposition over Greenland (figure 52 a & b).
Robert L. Forward, “Antiproton Annihilation Propulsion”, University of Dayton, 1985.