Accession Number : AD0761796
Title : Tactile Information Presentation (TIP).
Descriptive Note : Technical rept.,
Corporate Author : AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OHIO
Personal Author(s) : Thorburn,David E. ; Ravenelle,Richard L.
Report Date : MAR 1973
Pagination or Media Count : 12
Abstract : The paper describes the Tactile Information Presentation (TIP), a device that avoids many of the disadvantages of previously proposed devices. The TIP produces a distinct tactile stimulus to the abdomen and thighs by inducing high pressure pulses of air into the pilot's anti-G suit. A special circuit senses a preset voltage from the angle-of-attack transmitter, accelerometer, or other sensors. This in turn triggers a low frequency oscillator which induces air pulses into the pilot's anti-G suit through a bypass around the standard anti-G valve. Experimental testing on a centrifuge has shown that, although the exact pulse frequency is not critical, three pulses per second provides a distinguishable stimulus under a variety of conditions. Although G-limit information can be presented by the TIP, angle-of-attack or maximum maneuvering alpha appear to be more useful information. Since a signal is obtained even when the G-suit is not inflated, landing angle-of-attack information could also be presented. This may be especially valuable in short-field or aircraft-carrier landings. (Author)
Descriptors : (*WARNING SYSTEMS, *AIRCRAFT EQUIPMENT), (*TOUCH, WARNING SYSTEMS), DETECTORS, GRAVITY, TOLERANCES(PHYSIOLOGY), AVIATION SAFETY, HUMAN FACTORS ENGINEERING
Subject Categories : Human Factors Engineering & Man Machine System
Distribution Statement : APPROVED FOR PUBLIC RELEASE