Abstract: A vehicle trunk detection and release system 10 which detects the presence of an individual within a trunk 14 and which releases the trunk 14, energizes the horn 16, and/or activates the headlights 17 upon such a detection. The system 10 further includes an illuminated touch pad 28 which opens the trunk 14 upon being touched.

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.

Abstract: A method of preparing either foamed or nonfoamed fracturing fluids which maintain an at least substantially constant viscosity during the introduction of varying concentrations of proppant. The at least substantially constant viscosity fluids of the present invention provide a substantially constant friction pressure, which provides improved on-site, real-time analysis and to a better evaluation of the fracture treatment.