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Anti-G suit inflation rate requirements.
Aviat Space Environ Med. 1988 Jul; 59(7):601-5.AS

Abstract

Relaxed +Gz rapid-onset tolerances were measured on the human-use centrifuge at the USAF School of Aerospace Medicine, using male research subjects with and without inflated anti-G suits. Tolerance at 6 G.s-1 onset rates were 0.2-0.3 G lower than those measured with 1 G.s-1 onset rates, thus suggesting the existence of another relaxed G tolerance measurement called very high onset G. Baroceptor effect was considered the reason for this difference. Delays of a mean of 3.3 s in inflating the anti-G suit did not change relaxed G tolerances at 6 G.s-1 onset rates; however, with a 4.2-s mean delay, light-loss tolerance criteria occurred sooner during the G exposure. Tolerances to 7 G with 6 G.s-1 onset rates, during which the subjects had to perform the anti-G straining maneuver (AGSM), required a mean delay of 2.8 s in six subjects before a noticeable change in light-loss criteria occurred--a mean delay of 2.0 s resulted in no change in light-loss criteria from zero delay control inflation rates. These results clearly indicate that the inflation of the anti-G suit can be delayed by at least 1 s without compromising anti-G suit protection.

Authors+Show Affiliations

Burton RR
Crew Technology Division, U.S. Air Force School of Aerospace Medicine, Brooks Air Force Base, Texas 78235-5301.

MeSH

AccelerationAdultAerospace MedicineGravitationGravity SuitsHumansMaleTime Factors

Pub Type(s)

Journal Article

Language

eng

PubMed ID

3408420

Citation

Burton, R R.. "Anti-G Suit Inflation Rate Requirements." Aviation, Space, and Environmental Medicine, vol. 59, no. 7, 1988, pp. 601-5.
Burton RR. Anti-G suit inflation rate requirements. Aviat Space Environ Med. 1988;59(7):601-5.
Burton, R. R. (1988). Anti-G suit inflation rate requirements. Aviation, Space, and Environmental Medicine, 59(7), 601-5.
Burton RR. Anti-G Suit Inflation Rate Requirements. Aviat Space Environ Med. 1988;59(7):601-5. PubMed PMID: 3408420.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Anti-G suit inflation rate requirements. A1 - Burton,R R, PY - 1988/7/1/pubmed PY - 1988/7/1/medline PY - 1988/7/1/entrez SP - 601 EP - 5 JF - Aviation, space, and environmental medicine JO - Aviat Space Environ Med VL - 59 IS - 7 N2 - Relaxed +Gz rapid-onset tolerances were measured on the human-use centrifuge at the USAF School of Aerospace Medicine, using male research subjects with and without inflated anti-G suits. Tolerance at 6 G.s-1 onset rates were 0.2-0.3 G lower than those measured with 1 G.s-1 onset rates, thus suggesting the existence of another relaxed G tolerance measurement called very high onset G. Baroceptor effect was considered the reason for this difference. Delays of a mean of 3.3 s in inflating the anti-G suit did not change relaxed G tolerances at 6 G.s-1 onset rates; however, with a 4.2-s mean delay, light-loss tolerance criteria occurred sooner during the G exposure. Tolerances to 7 G with 6 G.s-1 onset rates, during which the subjects had to perform the anti-G straining maneuver (AGSM), required a mean delay of 2.8 s in six subjects before a noticeable change in light-loss criteria occurred--a mean delay of 2.0 s resulted in no change in light-loss criteria from zero delay control inflation rates. These results clearly indicate that the inflation of the anti-G suit can be delayed by at least 1 s without compromising anti-G suit protection. SN - 0095-6562 UR - https://www.unboundmedicine.com/medline/citation/3408420/Anti_G_suit_inflation_rate_requirements_ DB - PRIME DP - Unbound Medicine ER -