Boots – shoes – and leggings
Patent
1994-10-24
1996-10-22
Trammell, James P.
Boots, shoes, and leggings
364578, G06G 748
Patent
active
055684041
ABSTRACT:
A programmable digital computer system is utilized for predicting sound pressure levels (SPLs) within a vehicle due to wind noise by utilizing data representing pressure spectra for vortex, reattached and turbulent boundary layer flows over a glass side window of the vehicle. The method and system preferably utilize data representing physical properties of at least one door seal of the vehicle. A set of pressure coefficients is determined so that a vortex area in turn can be determined and utilized during computation of the SPLs. Plots of the SPLs over a predetermined frequency range can be displayed for a driver's ear position as well as for a passenger's ear position within the vehicle.
REFERENCES:
patent: 3875706 (1975-04-01), Okawa
patent: 3904456 (1975-09-01), Schwartz
patent: 4553354 (1985-11-01), Barbero
patent: 4571886 (1986-02-01), Shiraishi
patent: 5097512 (1992-03-01), Batey
"The Transmission Of Aerodynamically-Generated Noise Through Panels In Automobiles", by John R. Callister et al., Second International Congress On Recent Developments In Air- And Structure-Borne Sound And Vibration, Mar. 4-6, 1992, Auburn University, USA, pp. 1535-1542.
Ford Motor Company
May Roger L.
Mierzwa Kevin G.
Trammell James P.
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