Showing papers by "Vaughn College of Aeronautics and Technology published in 1966"
TL;DR: In this paper, Schlieren photographs were taken through transparent side walls at turbulence levels ranging from 2 to 14 per cent and at velocities up to 250 ft/sec.
50 citations
TL;DR: In this article, a slip-line field model of chip flow is presented which does not include sticking contact and which is consistent with the relevant experimental observations, which is inconsistent with steady state cutting.
Abstract: In recent papers it has been suggested that over part of the tool-chip contact zone the chip does not slide but sticks to the tool, chip flow taking place by shear within the body of the chip. Sticking contact is inconsistent with steady state cutting and in this paper a slip-line field model of chip flow is presented which does not include sticking contact and which is consistent with the relevant experimental observations.
32 citations
01 Jan 1966
TL;DR: The problem of designing the lightest framework which will equilibrate a system of given forces was first considered by A. G. M. Michell and structures designed according to his principles are called “Michell structures”.
Abstract: The problem of designing the lightest framework which will equilibrate a system of given forces was first considered by A. G. M. Michell [1]. Structures designed according to his principles are therefore called “Michell structures”.
25 citations
TL;DR: In this paper, an experimental and theoretical investigation has been carried out on the effects of air velocity and temperature, and stabilizer size and blockage, on the amount of fresh mixture entrained in the recirculation zone of a stabilized flame.
16 citations
1 citations
01 Jan 1966
TL;DR: The basic dislocation concepts are briefly reviewed and some of the characteristics of dislocation behaviour in crystalline materials are examined, and notably their elastic interaction mobility, and network formation, together with some established features of their role in such processes as crack formation and thermal ageing.
Abstract: SYNOPSIS
The basic dislocation concepts are briefly reviewed. Some of the characteristics of dislocation behaviour in crystalline materials are examined, and notably their elastic interaction mobility, and network formation, together with some established features of their role in such processes as crack formation and thermal ageing. Recent evidence relating to more detailed dislocation events, such as loop-formation, is reviewed, and the extension of dislocation concepts to non-metallic crystals examined, covering both the (brittle) ceramic type, and crystalline polymers. The concept of a continuous distribution of dislocations is considered, and the possibilities opened up by this important branch of the subject are generally assessed. The aim of the review as a whole is to demonstrate the degree of correlation which has been achieved between theory and experiment (particularly with work in electron microscopy), and to give an indication of the way in which the subject is developing at the present time.
TL;DR: In this article, the behavior of a relaxing gas in a cylindrical heat-conductivity cell is re-assessed and attention drawn to some special circumstances which do not appear to have been noted before.
TL;DR: In this article, the basic parameters leading to aircraft navigational error are combined statistically and are used to evaluate the uncorrected deviation (wander) to be expected in both subsonic and supersonic transport aircraft operating in a typical trans-oceanic environment.
Abstract: The basic parameters leading to aircraft navigational error are combined statistically and are used to evaluate the uncorrected deviation (wander) to be expected in both subsonic and supersonic transport aircraft operating in a typical trans-oceanic environment. The size of the across-track and along-track wander before any form of corrective control is applied indicates the physical size of the A.T.C. block of airspace necessary to contain the aircraft. The variation of block size with the forward prediction period used by A.T.C. is presented graphically. The effect of improvement in the basic sources of error is demonstrated and it is seen that for the S.S.T. era attention must be turned to effecting improvements in aircraft heading and airspeed holding capabilities.
TL;DR: A computer programme for the static worst-case design of a diode-transistor logic element is described, which permits the designer to take into account the possible existence of voltage and current-operated loads other than identical logic elements which the element may be called upon to drive.
Abstract: A computer programme for the static worst-case design of a diode-transistor logic element is described. The approach adopted permits the designer to take into account the possible existence of voltage and current-operated loads other than identical logic elements which the element may be called upon to drive. The computer results comprise a complete listing of all sets of standard resistor values capable of providing a specified fan-out factor for given supply line and resistor tolerances and given diode and transistor parameters. By eliminating much tedious calculation and narrowing the field these solutions form useful starting points from which the engineer may proceed to a final design satisfying all the imposed conditions.