Tactile Information Presentation (TIP).
AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OHIO
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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 pilots 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 pilots 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
- Human Factors Engineering and Man Machine Systems