BEI\u27s Driver Skill Enhancement Program (D-SEP): Brief Review of Experimental Mini-Program and Conclusions

The program had its beginnings in a local group meeting to provide input to the “White House Commission on Aging”, about 6 years ago. At this meeting, the author became acutely aware of the problems older people had with driving. Building on the author’s twenty-five years of activities with “Drivers Education” programs on high-speed road tracks, Ref. 1, he started a research program, which continues today. Research was initiated into other driving schools and their methods, and study of the fundamental elements of driving (from many sources). The research was supplemented by data gathering on the “process of driving” (by discussions with many “experts”). There is general agreement that driving is a combination of several skills; and there are three basic elements of driving: a) information gathering, primarily visual b) cognitive processing, during which the large amount of data obtained visually is sifted to separate out what is crucial for the driving experience. A decision is made as to what should be done. c) physical activities of the arms and legs, to carry out the decisions reached in the cognitive process. This process is repeated continuously as one drives, since driving is a “dynamic” process. The BEI program is based on two premises: 1) P+A=a good driver. P is Preparation: what the drivers, in their cars, can actually do. A is Anticipation: the visual-cognitive process which buys time to carry out the physical activities involved in making a car perform. Anticipation is usually not consciously practiced, although carried out in some form, for all driving. 2) “Training and practice” will, in most cases, considerably enhance the skills required for driving

Wind-Tunnel Investigation of a Low-Drag Airfoil Section with a Double Slotted Flap

Tests were made of an 0.309-chord double-slotted flap on an NACA 65, 3-118, a equals 1.0 airfoil section to determine drag, lift, and pitching-moment characteristics for a range of flap deflections. Results indicate that combination of a low-drag airfoil and a double-slotted flap, of which the two parts moved as a single unit, gave higher maximum lift coefficients than have been obtained with plain, split, or slotted flaps on low-drag airfoils. Pitching moments were comparable to those obtained with other high-lift devices on conventional airfoils for similar lift coefficients

Exploratory study of in-plane streamline curvature effects on a turbulent boundary layer at a Mach number of 3

This report on a program to study in-plane streamline curvature effects in a turbulent boundary layer at a Mach number of 3. The original proposal, for a 3-year program to explore in-plane streamline curvature effects on a supersonic turbulent boundary layer using three-dimensional pressure fields generated by fins and wall geometry, ended after one year. The purpose of these tests was to compare these streamline curvature effects to the more classical two-dimensional curvature generated by wall shape and imposed pressure gradients, previously considered primarily in a plane normal to the floor. The studies were carried out in the Mach number of 3, 8 x 8 inch High Reynolds Number Supersonic Tunnel. The usual surface visualization and mean wall static pressures were supplemented by the use of many small high frequency wall static pressure gauges (Kulites) to get some indication of the amplification of boundary layer disturbances by the in-plane streamline curvature caused by the three-dimensional pressure fields imposed on the boundary layer

Volumetric imaging of supersonic boundary layers using filtered Rayleigh scattering background suppression

We demonstrate the use of Filtererd Rayleigh Scattering and a 3D reconstruction technique to interrogate the highly three dimensional flow field inside of a supersonic inlet model. A 3 inch by 3 inch by 2.5 inch volume is reconstructed yielding 3D visualizations of the crossing shock waves and of the boundary layer. In this paper we discuss the details of the techniques used, and present the reconstructured 3D images

Radiatively driven hypersonic wind tunnel

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76604/1/AIAA-12568-479.pd

NACA Memorandum Reports

Report presenting testing in the two-dimensional low-turbulence pressure tunnel and the two-dimensional low-turbulence tunnel of two models made by the Consolidated Aircraft Corporation, one of the outboard section and one of the inboard section