| Determination of the Adequacy of Helmet Ventilation in a Prototype Navy MK-12 and the MK-5 Hard Hat Diving Apparatus. |
16 JUL 1974 |
31 pages |
| Authors:
E. D. Thalmann; J. C. Crothers; M. M. Knott; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
 | The adequacy of ventilation of the Navy MK-12 diving apparatus was tested in the open circuit mode under exercise conditions of increasing severity. The tests were performed on the submerged diver at a simulated depth of 100 feet of sea water in a hyperbaric complex. (Author) |
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| Temperature Requirements for the Maintenance of Thermal Balance in High Pressure Helium Oxygen Environments. |
01 JUN 1974 |
|
| Authors:
E. T. Flynn; J. Vorosmarti Jr.; H. I. Modell; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
 | Using a mathematical model of human thermal exchange, the range of environmental temperatures consistent with the maintenance of thermal balance was computed for helium-oxygen dives up to depths of 5000 FSW. In agreement with the trend of empirical data obtained during shallower dives, the required environmental temperature increases progressively with increasing depth while the range of acceptable temperatures decreases. The greatest changes occur in the first 1000 feet of descent. ... |
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| Evaluation of Sinbad Tests. |
01 JUN 1974 |
|
| Authors:
E. C. Bain III; T. E. Berghage; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The paper presents the baseline results and analysis of the SINDBAD (Systematic Investigation of Diver Behavior At Depth) data gathered at the U.S. Navy Experimental Diving Unit. Fourteen of the tests in the SINDBAD battery were administered in a dry hyperbaric chamber at one atmosphere absolute pressure to twenty-seven U.S. Navy first class divers. Eight additional tests from the same battery were taken by sixteen of the same divers under ... |
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| Evaluation of the Draeger LAR Three Pure Oxygen Scuba. |
05 MAY 1974 |
|
| Authors:
Thomas L. Hawkins; Thomas C. King; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The Draeger LAR III is a pure oxygen scuba designed and manufactured in the Federal Republic of Germany. An evaluation was conducted to determine safe operational capabilities and limitations with regard to instructional and training use by Naval Special Warfare divers. It is recommended that the Draeger LAE III be approved for limited use by U. S. Navy Underwater Demolition and SEAL Teams. (Author) |
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| A Prophylactic Program for the Prevention of Otitis Externa in Saturation Divers. |
23 APR 1974 |
|
| Authors:
E. D. Thalmann; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| A prophylactic regimen for the prevention of otitis externa was on five saturation dives. The dives totaled 78 days, no dive being shorter than ten days. A total of 26 subjects participated in the dives. The regimen consisted of irrigating the ear canals with a 2% acetic in aluminum acetate solution each morning and evening and after each head immersion. When compared to a set of base period dives of ... |
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| Biomedical Instrumentation for the 1973 EDU Dive to 1,600 Feet, |
APR 1974 |
|
| Authors:
W. R. Braithwaite; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The report documents the major components of the biomedical instrumentation used in the 1973 EDU dive to 1600 feet. The general principles, as well as the specific instrument connections used, are discussed in a way designed to assist the biomedical experimenter in understanding the instrumentation and how to avoid problems in future use. It is not intended to substitute for dive protocols or instrument operating manuals. |
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| Proposed Standards for the Evaluation of the Breathing Resistance of Underwater Breathing Apparatus. |
30 JAN 1974 |
|
| Authors:
Stephen D. Reimers; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| A set of definitive engineering-oriented respiratory impedance standards are proposed for use in the depth range 0 to 1000 fsw. The standard are consistent with current medical knowledge and are simply stated so that they may be easily applied. The test conditions under which the standards are to be applied are also specified in detail. Basically, the prepared standards require that the external respiratory work which a diver can be ... |
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| Operational Experiences with and Reasons for Removal of the Closed Circuit Television and Wetpot TV Camera Positioning Systems Installed in the NAVXDIVINGU Hyperbaric Complexes August 1968 to June 1971. |
25 JAN 1974 |
|
| Authors:
Stephen D. Reimers; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| In late 1968 a closed circuit televeision system was installed in the hyperbaric complexes at the Navy Experimental Diving Unit. The system used cameras mounted inside the hyperbaric chambers with external monitors and power supplies. The two cameras installed in the wetpots of the hyperbaric complexes were mounted on remotely controlled positioning systems capable of vertical movement and horizontal pan. The operational experiences with the closed circuit TV system and ... |
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| Some Basic Considerations Governing the Sizing of Hyperbaric Chamber Life Support Systems. |
24 JAN 1974 |
|
| Authors:
Stephen D. Reimers; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The services provided by hyperbaric chamber life support systems are described in very basic terms. The fundamental equations which govern the performance of the CO2 removal system are presented and described in terms understandable to personnel unfamiliar with the principles of engineering. The basic relationships which govern the performance of the temperature and humidity control systems are also described. This report is designed to foster a better understanding of life ... |
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| Technical Evaluation of the Battelle Portable Recompression System. |
16 JAN 1974 |
|
| Authors:
S. D. Reimers; B. S. Lebenson; L. E. Lash; M. D. Reynolds; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| A one-man portable recompression system (PRS) was subjected to evaluation testing at the U.S. Navy Experimental Diving Unit. The PRS is designed to maintain the CO2 partial pressure in the chamber below 1.0% S.E. with air consumption rates of 0.5 scfm during semi-closed circuit operation, and 2.0 acfm (2 scfm x depth pressure in atmospheres) during open circuit operation. The PRS was found to adequately support the ventilation requirements of ... |
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| Evaluation of Diver's Hand Held Underwater Lights Fara-Lite, Allan Light, and Margolis Light, |
1974 |
|
| Authors:
Richard Radecki; F. Atkinson; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Three commercially available, hand-held, rechargeable underwater lights were submitted to the Navy Experimental Diving Unit for test, evaluation, and possible qualification for the Navy Approved Products List. The lights were tested for illumination output in both wet and dry environments, battery duration, watertight integrity, and maximum operating depth. Two of the lights performed satisfactorily and were recommended for addition to the Approved Products List. |
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| Performance Characteristics and Basic Design Features of a Breathing Machine for Use to Depths of up to 3000 Feet of Sea Water. |
20 NOV 1973 |
|
| Authors:
Stephen D. Reimers; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Breathing machines have been a central part of the equipment used to evaluate respiratory protective devices and underwater breathing apparatus for several years. The leading breathing machines in use today are surveyed. A set of specifications are proposed for the development of a breathing machine for use in the testing of underwater breathing apparatus to depths of 3000 feet of sea water. Based on the breathing machines surveyed, a basic ... |
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| Diving Equipment Testing with SF6O2 Mixtures and the Kirby-Morgan KMB-8 Bandmask, |
10 OCT 1973 |
|
| Authors:
Stephen D. Reimers; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The Kirby-Morgan KMB-8 Bandmask (mid-1972 version) used with a U.S. Divers Conshelf XII first stage regulator was subjected to a series of breathing pressure tests at the Navy Experimental Diving Unit using a breathing machine and a specially constructed test manikin. The mask was tested using a 80% sulphur hexaflouride, 20% oxygen gas mixture at the surface. It was also tested on air and on a variety of helium-oxygen mixtures ... |
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| An Evaluation of the DESCO Air Diving Helmet. |
18 SEP 1973 |
|
| Authors:
Stephen D. Reimers; H. C. Langworthy; L. E. Larimore; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The helmet was tested for sound levels and ventilation efficiency using specially built test manikins. It was tested for diver comfort in a series of 40 manned dives. Since many of the testing methods used were new, a discussion of the procedures used as well as the results obtained is presented. The sound levels existing in the helmet were found to be into the damage risk levels under all of ... |
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| Evaluation of the Advanced (Swindell) Helium-Oxygen Diving Helmet. |
14 AUG 1973 |
|
| Authors:
Stephen D. Reimers; H. C. Langworthy; J. Hesket; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The Model 3610 System consists primarily of a Model 3000 Mixed Gas Helmet used with a neckseal and a Model 3700 Back Pack Scrubber. The system was tested for sound levels and ventilation efficiency using specially built test manikins. It was tested for diver comfort in a series of 20 manned dives. Since many of the testing methods used were new, a discussion of the procedures used as well as ... |
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| Evaluation Testing of the Advanced (SWINDELL) Air Diving Helmet. |
13 JUL 1973 |
|
| Authors:
Stephen D. Reimers; C. Langworthy; J. Hesket; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The helmet was tested for sound levels and ventilation efficiency using specially built test manikins. It was tested for diver comfort in a series of 36 manned dives. Since many of the testing methods used were new, a discussion of the procedures used as well as the results obtained is presented. The sound levels existing in the helmet were found to be into the damage risk levels under all of ... |
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| Evaluation of DACOR'S R-4, Olympic 400, Olympic 800 Open Circuit Scuba Regulators, |
09 JUL 1973 |
|
| Authors:
T. W. Cetta; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Dacor Corporation submitted three open circuit SCUBA regulators, models R-4, Olympic 400 and Olympic 800 for evaluation by the Navy Experimental Diving Unit. The Olympic 400 and Olympic 800 were found acceptable for service use. The R-4 was found unacceptable for service use. (Author) |
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| Evaluation of U. S. Diver's Co. Modified Conshelf VI and Conshelf XI Conversion to Conshelf XII Open Circuit Regulators, |
09 JUL 1973 |
|
| Authors:
T. W. Cetta; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The U. S. Diver's Conshelf VI was tested by the Experimental Diving Unit in 1963, in February 1973 for service use. In 1972 the Conshelf XII was tested by the Navy Experimental Diving Unit and in October 1972 was approved for service use. In 1971, the Conshelf XI superceded the Conshelf VI. The Conshelf XI was never submitted for testing hence never approved. At the present time, only the Conshelf ... |
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| Sound Level Testing of the Yokohama Helium-Oxygen Diving Helmet. |
15 JUN 1973 |
|
| Authors:
Stephen D. Reimers; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| A helium-oxygen diving helmet manufactured by the Yokohama Diving Apparatus Company, Ltd. of Yokohama, Japan and distributed in the U.S. by J and J Marine Diving Co., was subjected to sound level testing on a specially built acoustical manikin at the U.S. Navy Experimental Diving Unit. Ten manned test dives were also conducted. The sound levels existing in the helmet were found to be into the hearing damage risk levels, ... |
|
| Sound Level Testing of the Standard USN MK V Air and Helium-Oxygen Diving Helmets. |
08 JUN 1973 |
|
| Authors:
Stephen D. Reimers; James K. Summit; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Nine standard USN Mark V Air Diving Helmets and two standard USN Mark V Helium-Oxygen Diving Helmets were subjected to sound level testing on two specially built acoustical manikins at the Navy Experimental Diving Unit. The sound levels existing in the helmets were found to be into the hearing damage risk levels under nearly all the conditions tested. Wide variability in the measured sound levels was found to exist from ... |
|
| Simulation Testing of Divers Breathing Apparatus. |
14 MAR 1973 |
|
| Authors:
Stephen D. Reimers; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The development of human simulation and physiologic testing methods is greatly altering the development cycle for military diver life support equipment. The relationships of both testing methods to each other and to the complete development cycle are discussed. The state of development of the NEDU 'human simulator' and the measuring techniques needed to support it are discussed in detail. (Author) |
|
| Diver First Class Reading Ability. |
01 JAN 1973 |
|
| Authors:
E. C. Bain III; T. E. Berghage; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The Nelson-Denny reading test was administered to thirty Navy first class diver candidates to evaluate the group's vocabulary, reading comprehension, reading rate and over-all reading ability. Reading rate and comprehension were at the twelfth grade level, while vocabulary ability was equal to the college freshman norm. (Modified author abstract) |
|
| The Use of Standard Navy Classification Test Scores for the Selection of Diver First Class Candidates. |
15 AUG 1972 |
|
| Authors:
Thomas E. Berghage; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Training records at the Naval School of Diving and Salvage for the years 1965-1970 were surveyed. Four hundred sixty-four complete records for diver first class students were found. These records were used to evaluate existing, readily available aptitude tests as predictors of success in diver training. Scores on four subtests of the standard navy enlisted classification battery along with age were evaluated statistically. The results are discussed. (Modified author abstract) ... |
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| Systematic Guide to Decompression Schedule Calculations. |
15 JUL 1972 |
|
| Authors:
William R. Braithwaite; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The report is designed to be used in conjunction with Workman's presentation of the theoretical basis for the calculation of decompression schedules, EDU Report No. 6-65, to clarify the definitions and simplify the calculation procedure. An attempt has been made to explain verbally and graphically the basic concepts in areas known to be difficult for students of Workman's method. The report includes a step-by-step program designed to lead one through ... |
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| Pulmonary Mechanical Functions in Man Breathing Dense Gas Mixtures at Great Depths. |
JUL 1972 |
|
| Authors:
W. Brandon Wright; R. Peterson; C. j. Lambertsen; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The high density of breathing gas at great depths may impair a diver's performance by mechanical overload of his respiratory system. In order to describe this phenomenon and to search for a respiratory limit to deep diving pulmonary mechanical functions were measured at 19 different breathing gas densities ranging from 0.4 to 25 gms/L. (equivalent to helium at sea level to helium at 150 Ata). The results of these studies ... |
|
| The Calculation of Minimum Safe Inspired Gas Temperature Limits for Deep Diving. |
JUL 1972 |
20 pages |
| Authors:
W. R. Braithwaite; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Loss of body heat through the lungs of divers breathing cold gas at depths greater than 600 feet can be lethal; no adequate guidelines to safe inspired gas temperature are currently available. Review of the recent research in hyperbaric respiratory heat loss has allowed the development of a rational method of calculating the minimum safe inspired gas temperatures for deep diving. In the report, the recent respiratory heat loss research ... |
|
| Diver Anthropometrics. |
01 JUN 1972 |
151 pages |
| Authors:
Hugh T. Beatty; Thomas E. Berghage; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| To aid the design engineer in the development of future U. S. Navy diving systems and equipment a comprehensive anthropometric study was undertaken. Fifty-four anthropometric measures, two pulmonary function measures, and three derived body measures were obtained on 100, 41, and 100 U. S. Navy divers respectively. Descriptive statistics and measures of interrelationship are given for each measured and derived variable. The minimum number of anthropometric variables needed was determined ... |
|
| Preproduction Testing of Divers Non-Return Valve Containing Kepner Products Cartridge Insert. |
20 MAR 1972 |
|
| Authors:
Stephen D. Reimers; Charles A. Holton; James H. Friel; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Two divers non-return valves for use with the standard U.S. Navy deep sea diving outfits were supplied to the U.S. Navy Experimental Diving Unit as samples for pre-production testing under contract N00104-70-C-5687. The valves were found to seat at low differential pressures even after several thousand cycles of operation, and were found to meet all of the requirements of the contract. The valves were judged satisfactory for use in deep ... |
|
| Portsmouth Naval Shipyard Chamber Modifications. 1971. |
JAN 1972 |
|
| Authors:
Richard Y. Iha; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Extensive modifications to the Navy Experimental Diving Unit Hyperbaric Facility were performed by the Portsmouth New Hampshire Naval Shipyard during 1971. This report describes and documents the modifications which consist of installing penetrators, modifying hatch seals, magnetic particle testing welds and repair welding performed on the pressure hull. (Author) |
|
| Calculation of Cumulative Pulmonary Oxygen Toxicity. |
1972 |
|
| Authors:
W. Brandon Wright; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The use of elevated oxygen pressures in diving, treatment of decompression sickness, and hyperbaric oxygen therapy exposes the subject to the risk of oxygen toxicity of the lungs. At present no adequate guidelines exist to assist the physician in planning an oxygen exposure which will be safe from this hazard. The development of a method of calculating an estimated rate of onset and severity of pulmonary oxygen toxicity in man ... |
|
| Review and Analysis of Cases of Decompression Sickness Occurring under Pressure. |
01 DEC 1971 |
|
| Authors:
James K. Summitt; Thomas E. Berghage; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The increased frequency of decompression sickness occurring while the diver is still under pressure necessitates establishment of a standardized procedure to treat those cases which are beyond the scope of currently accepted treatment tables. Helium diving accidnet and treatment data were analyzed to evaluate the therapeutic adequacy of the treatment procedures that have been used for treating the helium diver stricken while under pressure; to delineate precipitant factors which may ... |
|
| Test of Bendix Air Filters Used as Mufflers. |
02 SEP 1971 |
|
| Authors:
Stephen D. Reimers; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Excessive noise, coming mainly from air supply and exhaust lines, has recently become recognized as a serious hazard to hyperbaric chamber personnel. A Bendix air filter no. 057619 was tested by the Navy Experimental Diving Unit as a potential muffler for these systems. The filter was found to produce a 30dbA reduction in the sound level produced by the air supply line in EDU's no. 5 recompression chamber. The filter, ... |
|
| Evaluation of SCUBA PRO MARK I, MARK V and MARK VII Open Circuit SCUBA Regulators. |
31 AUG 1971 |
|
| Authors:
Richard Y. Iha; Stephen D. Reimers; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The military specifications for open circuit SCUBA regulators provide a mechanism by which commercial vendors may submit their regulators to the Navy Experimental Diving Unit for testing for possible approval for U. S. Navy use. Accordingly, three SCUBA PRO single hose regulators, Models MARK I (Mil-101), MARK V (Mil-105) and MARK VII (Mil-107), were tested at NEDU during May 1971. Models MARK I (Mil-101) and MARK V (Mil-105) were found ... |
|
| Swimmer Support System Diving Procedures and Tables. |
17 AUG 1971 |
|
| Authors:
William H. Spaur; Edward T. Flynn; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Diving tables and procedures are presented for use with swimmer delivery vehicles and open circuit, semi-closed circuit and closed circuit underwater breathing apparatus. (Author) |
|
| Incidence of Decompression Sickness in Mice as a Function of the Relative Concentrations of Helium and Nitrogen in the Inspired Gas Mixture. |
12 AUG 1971 |
|
| Authors:
Timothy G. Wex; D. G. Long; Edward T. Flynn; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Two hundred fifty mice were exposed to a pressure equivalent to 400 feet of seawater for 30 minutes while breathing a mixture of 2.09 - 2.33% oxygen and either (1) 97.8% N2, (2) 73.0% N2 24.6% He, (3) 48.7% N2 49.1% He, (4) 23.7% N2 74.2% He, or (5) 97.8% He. In each case, decompression to sea level followed an exponential course and was 90% complete in approximately 8 sec. ... |
|
| Report of Nine Four Hour Exposures to 100% Oxygen at 11-13 Feet of Seawater. |
09 AUG 1971 |
|
| Authors:
John M. Alexander; Edward T. Flynn Jr; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Eight healthy male subjects were exposed to 100% oxygen for four hours at a simulated depth of 11-13 feet of seawater in a wet compression chamber. No symptoms of central nervous system or pulmonary oxygen toxicity were observed. Four of the subjects, however, demonstrated decreases in vital capacity ranging from 137 to 786 m1 BTPS following the exposure. These changes were believed to be due to atelectasis formation in the ... |
|
| Preliminary Survey of Diver Anthropometrics. |
01 JUN 1971 |
|
| Authors:
Hugh T. Beatty; Thomas E. Berghage; Donald R. Chandler; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Anthropometric data for Navy Divers were collected and analyzed for mean, standard deviation, skewness and kurtosis. The data were analyzed by computer percentiles calculated and printed out. (Author) |
|
| Indexed Retrieval System for Navy Experimental Diving Unit Research and Evaluation Reports. |
01 JUN 1971 |
|
| Authors:
Hugh T. Beatty; Thomas E. Berghage; Donald R. Chandler; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| To update and streamline informaton retrieval at the Navy Experimental Diving Unit (NEDU) a computerized Key-Word-In-Context (KWIC) index system was developed. The KWIC system permits the user to retrieve NEDU research and evaluation reports by report number, author, and/or 'keyword' in title. The KWIC computer programs developed by the International Business Machine Corporation (IBM) were so successful in this application that they are now being applied to all of NEDU's ... |
|
| Navy-Duke 600 Foot Saturation Dive. |
25 MAY 1971 |
|
| Authors:
Edward T. Flynn Jr.; James K. Summitt; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Four U.S. Navy first class divers, a Medical Officer, and a civilian laboratory technician were compressed to a simulated depth of 600 feet of sea water in the Duke University Hyperbaric Complex. During the subsequent 7 days at 600 feet, two warm (90F) and 5 cold (43-49F) water experiments were conducted in order to assess the performance of the Mark IX semi-closed circuit UBA at depth. From these tests, it ... |
|
| Noise: A Hazard to Divers and Hyperbaric Chamber Personnel. |
15 MAY 1971 |
|
| Authors:
James K. Summitt; Stephen D. Reimers; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Quantitative information describing ambient noise in the diving environment is almost non-existent. Sensorineural hearing deficits that have been observed in some diving groups have been attributed to previous noise exposure in non-diving situations such as exposure to small arms fire, engine room noise or flight deck noise. This report describes a series of experiments conducted at the Navy Experimental Diving Unit to determine the sound level in a variety of ... |
|
| Computer Generated Depth-Pressure Conversion Tables. |
01 APR 1971 |
|
| Authors:
Thomas E. Berghage; Hugh T. Beatty; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The tables are needed to provide a simplified method for converting depth in feet of sea water to other depth and pressure units. A computer program was written for the calculation and printing of selected depth and pressure units from 0 to 2999 feet of sea water. Conversion tables presented are depth in feet of sea water, depth in meters, depth in fathoms, atmospheres absolute, pounds per square inch absolute, ... |
|
| Revised Tables of Appropriate Oxygen Percentages for Selected Partial Pressures at Various Depths. |
01 APR 1971 |
|
| Authors:
Thomas E. Berghage; Gilbert C. Tolhurst; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The report was written to promulgate a revised set of tables to allow rapid and easy conversion of water depth and partial pressure combinations into appropriate oxygen per cent to be used by divers and diving supervisors. The tables were devised for use when making necessary conversions between depth in feet of sea water and pressure in terms of atmospheres absolute. (Author) |
|
| Effect of Immersion on the Exchange of Oxygen in the Lung. |
31 JAN 1971 |
|
| Authors:
E. T. Flynn; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Steady state pulmonary gas exchange measurements were obtained in two resting subjects breathing a mixture of helium and oxygen at a simulated depth of 5 feet of sea water in a hyperbaric chamber. Measurements were obtained first with the subjects in a dry environment and then with the subjects immersed to the chin in warm water. Immersion was associated with a 1.3-1.7 mmHg increase in arterial carbon dioxide tension, a ... |
|
| Evaluation of U. S. Diver's Calypso III, Calypso J, Conshelf XII, Aquarius, and Royal Aquamaster Open Circuit Scuba Regulators. |
1971 |
|
| Authors:
T. W. Cetta; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The military specifications for open circuit SCUBA regulators provide a mechanism by which commercial vendors may submit their regulators to the Navy Experimental Diving Unit for testing for possible approval for U.S. Navy use. Accordingly, U.S. Diver's single hose regulators Calypso III, Calypso J, Conshelf XII and Aquarius and double hose regulator Royal Aquamaster were tested in September 1972. Due to the non availability of government test chambers, the regulators ... |
|
| Preliminary Evaluation of the Modified Mine Safety Appliance Underwater Swimming Apparatus. |
1971 |
|
| Authors:
J. K. Coates; H. T. Fulton; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The object of the test was to evaluate the modified Mine Safety Appliance as an underwater swimming apparatus to determine the value of these modifications and general performance of the unit. (Author) |
|
| Testing of Dacor R-4 Double Hose SCUBA Regulator. |
23 DEC 1970 |
|
| Authors:
Stephen D. Reimers; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The military specifications for open circuit SCUBA regulators provide a mechanism by which commercial vendors may submit their regulator to the Navy Experimental Diving Unit for testing for possible approval for U. S. Navy use. Accordingly, one Dacor Corporation Model R-4 double hose SCUBA regulator was tested on 22 October 1969. The inhalation resistance of the regulator was found to exceed the maximum levels allowed for double hose SCUBA regulator ... |
|
| Review of Diving Accident Reports 1969. |
01 DEC 1970 |
|
| Authors:
J. R. Tammany; James K. Summitt; Thomas E. Berghage; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| All diving accidents which were reported to the Experimental Diving Unit for 1969 were machined coded for computerized statistical analysis. The most common accident, decompression sickness among military divers, is given special review and analysis. Several factors, involving both the divers' physical characteristics and diving factors or the diving operations, are presented in simplified statistical form and compared with similar data derived from previous report periods. Significant changes are discussed ... |
|
| Report of Experimental Dives for SEALAB III Surface Support Decompression Schedules. |
01 DEC 1970 |
120 pages |
| Authors:
Richard W. Crowley; James K. Summitt; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The report describes the decompression schedules that were developed and tested by the U.S. Navy Experimental Diving Unit (NAVXDIVINGU) in preparation for SEALAB III. The need was foreseen for a surface supported diving capability for underwater tasks of relatively short duration which would not necessitate the use of saturation diving with its resulting long decompression times. The decompression schedules described in the report were designed to provide that capability. The ... |
|
| Evaluation of SCUBA PRO MARK I and MARK V Open Circuit SCUBA Regulators. |
DEC 1970 |
|
| Authors:
Stephen D. Reimers; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| The military specifications for open circuit SCUBA regulators provide a mechanism by which commercial vendors may submit their regulators to the Navy Experimental Diving Unit for testing for possible approval for U. S. Navy use. Accordingly, two SCUBA PRO single hose regulators, Models MARK I AND MARK V, were tested in December 1969. The inhalation resistance of the regulators was found under certain conditions to exceed the limits specified for ... |
|
| KMB-8 Band Mask Evaluation. |
DEC 1970 |
|
| Authors:
Donald R. Chandler; NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
|
| Thirty-two manned test dives were made using the Kirby Morgan KMB-8 Band Mask; 30 on air at depths to 190 feet of sea water, 2 on HeO2 to 1000 feet of sea water. Comparative maximum flow tests were also run on both the original KMB-8 and on a newer model currently being supplied by the manufacturer. The tests showed that the mask performed satisfactorily under the conditions tested although some ... |
|
Reports by Corporate Author
