The Boeing Company

Nord-micro Ag & Co. Ohg

Naval Kishore Agarwal

Richard A Black

Herbert Louis Hoffman

Yeu-chuan Hsia

Wendell R Miller

Pat D Parkin

Frederick R Helms

Wen-Hwang Lin

Roy Hai-Tien Loh

F Wayne Hollatz

Robert J Devitis

Yeu-Chuan Hsia

Wayne F Hollatz

Steven Fulton Griffin

Martin Steinert

Ulf Michel

Darby Grant Cooper

Frank Arnold

Wolfgang Neise

Pat Parkin

An impact-compensating bucking bar and its use to reduce impacts during riveting, where the bucking bar includes a body; a strike surface on a distal portion of the body, a compensating inertial mass coupled to the body by a flexible and resilient mass support, and a handgrip coupled to the body and configured for the user to urge the strike surface of the bucking bar against a tail of a rivet to facilitate upsetting the rivet tail during riveting. A relative movement of the compensating inertial mass of the bucking bar in response to a strike on the rivet head at least partially dissipates energy imparted to the body during riveting, reducing impact stresses on the bucking bar user.

Impact-compensating bucking bar

A method for effecting a machine-based determination of speech intelligibility in an aircraft during flight operations includes: (a) in no particular order: (1) providing a representation of a machine-based speech evaluating signal; and (2) providing a representation of in-flight noise; (b) combining the representation of a machine-based speech evaluation signal and the representation of in-flight noise to obtain a combined noise signal; and (c) employing the combined noise signal to present the machine-based determination of speech intelligibility in an aircraft during flight operations.

System and method for machine-based determination of speech intelligibility in an aircraft during flight operations

A valve is provided for controlling a flow of a fluid between a first environment and a second environment. The valve includes a frame adapted to fit within a perimeter of an aperture in a divider separating the first environment from the second environment. The valve additionally includes a first gate movable within the frame to control a flow of the fluid through the aperture between the first environment and the second environment. The first gate includes a substantially aerodynamically clean surface substantially free from protrusions disrupting the flow of the fluid over the first gate surface. Additionally, the first gate includes a trailing edge having a baffle adapted to cover an aft edge of the frame when the first gate is positioned to have a small opening angle. The baffle includes a plurality of 3-D notches in a front side of the baffle. The valve further includes a second gate movable within the frame to control a flow of the fluid through the aperture between the first environment and the second environment. The second gate also includes a substantially aerodynamically clean surface substantially free from protrusions disrupting the flow of the fluid over the second gate surface. Additionally, the second gate includes a trailing edge comprising a plurality of 3-D notches in a front side of the trailing edge.

Fluid control valve

A valve for controlling a flow of a fluid between a first environment to a second environment is provided. The valve includes a frame that fits within an aperture in a divider separating the first environment from the second environment. Additionally, the valve includes at least one gate mounted and movable within the frame to control a flow of the fluid between the first environment and the second environment through the aperture. The gate includes a surface, wherein at least one portion of the surface includes a rough texture. The rough texture reduces coherent vortex shedding of the fluid as the fluid passes over the gate surface.

Growing community of inventors

Sammamish, WA, United States of America

Naval Kishore Agarwal