Download or read book Evaluation of a Portable Helicopter Oxygen Delivery System written by and published by . This book was released on 2006 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotary-wing aircrew can be repeatedly exposed to moderately high altitude (up to 18,000 feet pressure altitude), making hypoxia and its performance effects a real hazard. Accordingly, USAARL was tasked to evaluate a portable oxygen system for potential use by U.S. Army helicopter aircrew. The system described below provided capability for oxygen production, charging of the portable system, as well as final use by aircrew. The objectives of the investigation were to determine if the system can adequately protect aircrew from hypoxia at altitude, to assess the integration of the device into existing Aviation Life Support Equipment (ALSE), and to verify ease of use. Eighteen subjects were exposed to altitudes of 10, 15, and 18 thousand feet with and without exercise. Throughout the study, the subjects' SpO2 (peripheral hemoglobin oxygen saturation) was continuously monitored. Two criterion values were selected: 91 %, above which no cognitive deficit is expected, and 80%, below which significant cognitive deficits are more frequent. Mean SpO2 declined significantly with increasing altitude whether the subjects were on or off oxygen. With the oxygen system in use (nasal cannula), mean SpO2 levels were above 91%, significantly better than without supplemental oxygen. Post exercise SpO2 was significantly lower (p0.001, paired t-test) than pre-exercise for both mask and cannula conditions. The system provided adequate oxygenation (defined as SpO291%) at low levels of exertion up to 18,000 feet, but oxygenation dropped with exercise at the higher altitudes. These findings supported recommendations to the customer for operational use and further research.
Download or read book A Physiological and Human Factors Evaluation of a Novel Personal Helicopter Oxygen Delivery System written by and published by . This book was released on 2007 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: In current U.S. Army operations, rotary-wing aircrew can be repeatedly exposed to moderately high altitude (up to 18,000 feet pressure altitude), making hypoxia, and its performance effects, a real hazard. The United States Army Aeromedical Research Laboratory (USAARL) was tasked by the Product Manager Air Warrior to evaluate a portable oxygen system for potential use by U.S. Army helicopter aircrew. The system described below provided capability for oxygen production, charging of the portable system, as well as in-flight use by aircrew. The system was tested for its compatibility with current Aircrew Assemblies, Night Vision Goggles, aircrew duties, and emergency egress. The system was also tested on pilot volunteers at altitude to determine efficacy. The Personal Helicopter Oxygen Delivery System (PHODS) was able to maintain aircrew blood oxygen at acceptable levels up to and including 18,000 feet.
Download or read book Effects of Personal Helicopter Oxygen Delivery System PHODS Nasal Cannula Installation on the Lateral Impact Protection of the HGU 56 P Aircrew Integrated Helmet System AIHS written by and published by . This book was released on 2007 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: The USAARL was tasked by the Product Manager, Air Warrior, to evaluate the Aqualung Portable Helicopter Oxygen Delivery System (PHODS). The objectives were to assess the blunt impact protection and mass properties of the HGU-56/P helmets modified with the PHODS nasal cannula. Six small HGU-56/P helmets were modified with nasal cannulas and subjected to blunt eardome impacts per the HGU-56/P product specification. Mass and center of mass (CM) assessments were performed using one large HGU-56/P helmet modified with a nasal cannula. Modified HGU-56/P helmets limited headform accelerations to less than the 150-G criterion during eardome impacts. Thus, HGU-56/P helmets modified with the PHODS nasal cannula should provide adequate lateral impact protection in survivable rotary-wing mishaps. Installing the PHODS nasal cannula on the HGU-56/P flight helmet increased helmet weight and altered helmet CM position. The additional mass and change in CM did not appreciably increase the risk of sustaining acute lower neck injury for the conditions evaluated.
Download or read book Contaminant Evaluation of Helicopter Oxygen System written by Herman J. Kilian and published by . This book was released on 1974 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new aircrew oxygen delivery system using multiple sodium chlorate oxygen generators was tested for contaminant offgassing to assure physiological compatibility under anticipated use conditions. Measurements were made of oxygen flow, temperature, pressure, purity, and contaminant analyses for chlorine, carbon monoxide, carbon dioxide, total hydrocarbons, and water vapor in the breathing oxygen. The system met all specifications for oxygen purity and contaminant content under both normal and emergency use conditions.
Download or read book Evaluation of a Gentex registered Trademark ORO NASAL Oxygen Mask for Integration with the Aqualung registered Trademark Personal Helicopter Oxygen Delivery System PHODS written by and published by . This book was released on 2008 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: In current U.S. Army operations, rotary-wing aircrew can be repeatedly exposed to moderately high altitude (up to 18,000 feet pressure altitude), making hypoxia, and its performance effects, a real hazard. The United States Army Aeromedical Research Laboratory (USAARL) was tasked by the Product Manager Air Warrior to evaluate an oxygen mask for use with the Personal Helicopter Oxygen Delivery System (PHODS) for potential use by U.S. Army helicopter aircrew. The mask was tested on pilot volunteers at altitude to determine efficacy. The mask and PHODS was able to maintain aircrew blood oxygen at acceptable levels up to and including 18,000 feet.
Download or read book A Portable Oxygen System for Aeromedical Crewmembers An Evaluation written by Thomas R. Morgan and published by . This book was released on 1976 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: An emergency portable oxygen system for aeromedical crewmembers was subjected to a series of manned human compatibility tests. Test conditions included decompression to a simulated cabin altitude of 40,000 feet, with subsequent emergency descent and continuation at 25,000 feet until the system's chlorate-candle oxygen generator was exhausted. Test subjects were satisfactorily oxygenated in all cases, and the unit's external-surface and product-gas temperatures remained acceptable throughout each test. After use, however, each unit experienced melting/failure of the oxygen-mask hose at its junction with the candle assembly's oxygen-delivery tube. A modification rectifying this tendency was derived and satisfactorily tested in subsequent experiments. Problems and advantages inherent to the system's function are discussed in the light of both physiological and anticipated operational effectiveness. (Author).
Download or read book Journal of the House of Representatives of the United States written by United States. Congress. House and published by . This book was released on 1973 with total page 1464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some vols. include supplemental journals of "such proceedings of the sessions, as, during the time they were depending, were ordered to be kept secret, and respecting which the injunction of secrecy was afterwards taken off by the order of the House".
Download or read book Congressional Record written by United States. Congress and published by . This book was released on 2010 with total page 1618 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Congressional Record is the official record of the proceedings and debates of the United States Congress. It is published daily when Congress is in session. The Congressional Record began publication in 1873. Debates for sessions prior to 1873 are recorded in The Debates and Proceedings in the Congress of the United States (1789-1824), the Register of Debates in Congress (1824-1837), and the Congressional Globe (1833-1873)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Department Of Defense Index of Specifications and Standards Federal Supply Class Listing FSC Part III July 2005 written by and published by DIANE Publishing. This book was released on with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review written by Oak Ridge National Laboratory and published by . This book was released on 2002 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Defense Authorization Act for Fiscal Year 2011 written by United States. Congress. House. Committee on Armed Services and published by . This book was released on 2010 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerospace Medicine and Biology written by and published by . This book was released on 1984 with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).
Download or read book Index of Specifications and Standards written by and published by . This book was released on 2005 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Information Indexes written by United States. Naval Air Systems Command and published by . This book was released on 1974 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP written by and published by . This book was released on 1992 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Yearbook of Intensive Care and Emergency Medicine 2001 written by Prof. Jean-Louis Vincent and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 721 pages. Available in PDF, EPUB and Kindle. Book excerpt: The yearbook compiles the most recent, widespread developments of experimental and clinical research and practice in one comprehensive reference book. The chapters are written by well recognized experts in the field of intensive care and emergency medicine. It is addressed to everyone involved in internal medicine, anesthesia, surgery, pediatrics, intensive care and emergency medicine.
