Abstract: A CFME apparatus for continuously measuring coefficient of friction of a paved runway or paved road at any speed up to 105 kilometers per hour with improved efficiency for more precise measurements on ice-contaminated pavement, the improved precision being achieved by reducing the standard deviation in the file of recorded measurements normally recorded at an average rate of one measurement per second includes a frame attached to a vehicle mounting a vertical rotatable shaft pivotally carrying a suspension arm trailing rearwardly and downwardly so as to carry a test wheel at a rear end thereof in a wheel plane different from a forward plane to swivel about an upstanding axis in response to a torque applied to the suspension arm about the upright axis by the test wheel. A sensor is responsive to changes in the angle between the forward plane and the wheel plane caused by changes in coefficient of friction.

Abstract: A CFME apparatus for continuously measuring coefficient of friction of a paved runway or paved road at any speed up to 105 kilometers per hour with improved efficiency for more precise measurements on ice-contaminated pavement, the improved precision being achieved by reducing the standard deviation in the file of recorded measurements normally recorded at an average rate of one measurement per second includes a frame attached to a vehicle mounting a vertical rotatable shaft pivotally carrying a suspension arm trailing rearwardly and downwardly so as to carry a test wheel at a rear end thereof in a wheel plane different from a forward plane to swivel about an upstanding axis in response to a torque applied to the suspension arm about the upright axis by the test wheel. A sensor is responsive to changes in the angle between the forward plane and the wheel plane caused by changes in coefficient of friction.

Abstract: The system herein disclosed and claimed is an educational construction system.

Abstract: A space cargo delivery apparatus and method has a flexible beam member, an end base, and stabilizing thrusters spaced along the length of the beam member for stabilizing and guiding the beam member. The end base is positioned at the distal end of the beam member. The beam member is inflatable so that it can support a compression load. The apparatus further has a retractor, which is connected to a proximal end of the beam member for storing the beam member in a deflated state and for controlling the amount of the beam member extending from the retractor in an inflated state. Alternatively, instead of the stabilizing thrusters, the delivery apparatus can use flexible beam members and a corresponding number of retractors to store the beam members and to control the lengths thereof extending from the retractors so that the end base can move in a relatively straight line.

Abstract: The present invention is for an implementation of a multi-stage digital interpolator and a method of interpolation, where n/2 additions are performed, where n=the number of bits in each filter coefficient being multiplied. Scaling and multiplication of data with coefficients is performed using a common architecture. Coefficient values, having an associated scaling factor, are stored in memory. The coefficients are stored in coded form, and are then decoded prior to multiplication by the data values.

Abstract: This invention is for a multi-stage digital decimation filter, which includes a sinc.sup.6 filter, a half-band linear phase FIR filter and a symmetric, linear phase, FIR filter and a digital compensation filter. The multi-stage decimation filter down-samples the output of a sigma-delta modulator by a factor of about 64. The compensation filter provides compensation for rolloff introduced by the multi-stage decimation filter.

Abstract: A practice putting green which is contourable relative to a reference surface to more closely approximate the actual surface of a putting green. The supporting surface, located beneath a resilient green-like covering, is divided up into plurality of planar sections fastened together by pieces of band steel attached to the undersides of the planar members, and spanning their abutting edges so as to allow the sections to move moderately relative to one another in a vertical direction. This surface in turn is supported by the reference surface and remote control elements are provided so that a wedge under the planar members may be moved in order to contour and decontour the surface.