Helmet-Mounted Displays: - USAARL - The - U.S. Army

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Acoustical Performance 233 American National Standards Institute. 1989. Method for measuring the intelligibility of speech over communications systems. ANSI S3.2- 1989. American National Standards Institute. 1995. Microphone-in- real-ear and acoustic test fixture methods for the measurement of insertion loss of circumaural hearing protection devices. ANSI 12.42-1995. Department of Defense. 1991. Hearing conservation. Washington DC: Department of the Army. DA PAM 40-501. Department of Defense. 1991. Hearing conservation program. Washington, DC: Department of Defense. DOD Instruction 6055.12, 26 Mar 91. McKinley, R. L., Erickson, M. A., D’Angelo, W. R. 1994. 3-Dimensional auditory displays: development, applications, and performance. Aviation, Space, and Environmental Medicine. Vol.67, No. 11. May 1994. 65(5, Suppl.): A31-8. Mozo, B. T., Murphy, B. A., and Ribera, J. E. 1995. User acceptability and comfort of the Communications Earplug (CEP) when used in the UH-1 helicopter. Fort Rucker, AL: U.S. Army Aeromedical Research Laboratory. USAARL Report No. 95-17. Mozo, B. T., and Murphy, B. A. 1997b. The assessment of sound attenuation and speech intelligibility of selected active noise reduction devices and the communications earplug when used with the HGU- 56/P aviator helmet. Fort Rucker, AL: U.S. Army Aeromedical Research Laboratory. USAARL Report No. 97-08. Mozo, B. T., and Murphy, B. A. 1997a. Evaluation of the communications earplug in the H-53 and CH-46 helicopter environments. Fort Rucker, AL: U.S. Army Aeromedical Research Laboratory. USAARL Report No. 97-36. Newby, H. A. 1972. Audiology. New York: Meredith Corporation. 3 rd ed. Prohaska, A. M., and Nixon, C. W. 1984. Hearing protection and speech intelligibility of two nonstandard inflight communications headsets. Wright-Patterson AFB: Air Force Aerospace Medical Research Laboratory. AFAMRL-SR-84-504. Rash, C. E., Mozo, B. T., McLean, W. E., McEntire, B. J., Haley, J. L., Licina, J. R., and Richardson, L. W. 1996. Assessment methodology for integrated helmet and display systems in rotary-wing aircraft. Fort Rucker, AL: U.S. Army Aeromedical Research Laboratory. USAARL Report No. 96-1.
Ribera, J. E., and Mozo, B. T. Undated. A comparison of three aviation helmet systems. Fort Rucker, AL: U.S. Army Aeromedical Research Laboratory. USAARL Draft Report. Shanahan, D. F. 1985. Basilar skull fracture in U.S. Army Aircraft Accidents. Fort Rucker, AL: U.S. Army Aeromedical Research Laboratory. USAARL Report No. 85-11. Staton, R. N., Mozo, B. T., and Murphy, B. A. 1997. Operational test to evaluate the effectiveness of the communication earplug and active noise reduction devices when used with the HGU-56P aviator helmet. Fort Rucker, AL: U.S. Army Aeromedical Research Laboratory. USAARL Report No. 97-09. Wagstaff, A. S., Tvete, O., and Ludvigsen, B. 1996. The effect of a headset leakage on speech intelligibility in helicopter noise. Aviation, Space, and Environmental Medicine. Vol.67, No. 11. November 1996. Wiener, E. L., and Nagel, D. C. 1988. Human Factors in Aviation. Academic Press, Inc.
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Helmet-Mounted Displays: Design Iss
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The views, opinions, and/or finding
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vi Contents 4. Visual Coupling Clar
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viii Contents References ..........
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x Ben T. Mozo, Research Physicist U
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xii Foreword began its phenomenal e
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xiv Preface Acknowledgments The aut
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Introductory Overview 1 Clarence E.
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Introductory Overview 5 Figure 1.2.
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Introductory Overview 7 The trend f
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Introductory Overview 9
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Introductory Overview 11 aviator to
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Introductory Overview 13 1970's. Ta
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Introductory Overview 15 Image sour
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Introductory Overview 17
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Table 1.3. HMD performance figures-
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Introductory Overview 21 direct vie
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Introductory Overview 23 Figure 1.9
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Introductory Overview 25 Figure 1.1
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Introductory Overview 27 Ercoline,
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Introductory Overview 29 II, Procee
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Introductory Overview 31 Armstrong
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34 Clarence E. Rash, Melissa H. Led
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40 Liquid crystal Clarence E. Rash,
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Optical Designs 3 William E. McLean
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Optical Designs 57 and plotted in l
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Optical Designs 59 phosphors, (b) u
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Optical Designs 61 optics. Examples
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Optical Designs 63
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prism combiner. Optical Designs 65
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Figure 3.2. (continued) Optical Des
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Optical Designs 69
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Optical Designs 71 Figure 3.4. Comp
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Optical Designs 73 Figure 3.6. Opti
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Optical Designs 75 Figure 3.8. Refl
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Optical Designs 77 Figure 3.9. Ray
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Optical Designs 79 incidence and re
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80 Clarence E. Rash hinted at befor
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82 Clarence E. Rash metal tolerant
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84 Clarence E. Rash the performance
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86 Clarence E. Rash Figure 4.3. Hig
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88 Clarence E. Rash imagery in HMDs
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90 Clarence E. Rash as with ANVIS.
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92 Clarence E. Rash performance, on
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94 Clarence E. Rash effects on visu
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96 Clarence E. Rash concerning roll
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98 Aeromedical Research Laboratory.
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DESIGN ISSUES PART TWO
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102 Clarence E. Rash and William E.
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104 Contrast Clarence E. Rash and W
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168 Number of SOG = � log (C r) /
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Visual Performance 6 William E. McL
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Visual Performance 171 observer is
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seen. Visual Performance 173 Figure
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Visual Performance 175 perception.
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Visual Performance 177 with monovis
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Visual Performance 179 individuals
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Visual Performance 181 0 to -5.25 d
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Page 203 and 204: Biodynamics 7 B. Joseph McEntire He
Page 205 and 206: Biodynamics 187 behavior of this de
Page 207 and 208: Figure 7.2. Head anatomical coordin
Page 209 and 210: Biodynamics 191
Page 211 and 212: Biodynamics 193 al., 1972), and man
Page 213 and 214: Biodynamics 195 Figure 7.5. Vertica
Page 215 and 216: Biodynamics 197 disability and fata
Page 217 and 218: Biodynamics 199 been fabricated int
Page 219 and 220: Biodynamics 201 Ty pic al acc ele r
Page 221 and 222: Biodynamics 203 exceed the mechanic
Page 223 and 224: Biodynamics 205 complexity and comp
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Page 227 and 228: Biodynamics 209 the fitting problem
Page 229 and 230: Biodynamics 211 adjustment buckle,
Page 231 and 232: Biodynamics 213 down. The helmet ma
Page 233 and 234: Biodynamics 215 Desert Shield/Deser
Page 235 and 236: Biodynamics 217 Donelson, S. M., an
Page 237 and 238: 219 Fort Rucker, AL: U.S. Army Aero
Page 239 and 240: 220 Ben T. Mozo Figure 8.1. Noise l
Page 241 and 242: 222 Ben T. Mozo available in the ne
Page 243 and 244: 224 Ben T. Mozo Protectors”(ANSI,
Page 245 and 246: 226 Ben T. Mozo language. Tests of
Page 247 and 248: 228 Ben T. Mozo Figure 8.6. Speech
Page 249 and 250: 230 Ben T. Mozo the communications
Page 251: 232 Ben T. Mozo Item Mass (grams) C
Page 255 and 256: 236 Joseph R. Licina operational us
Page 257 and 258: 238 Joseph R. Licina Standard MIL-S
Page 259 and 260: 240 Joseph R. Licina On electro-opt
Page 261 and 262: 242 Joseph R. Licina For HMDs with
Page 263 and 264: 244 Joseph R. Licina 1994b) that wi
Page 265 and 266: 246 Joseph R. Licina Table 9.2. Hea
Page 267 and 268: 248 Joseph R. Licina provided a 93.
Page 269 and 270: 250 Joseph R. Licina and buckles, a
Page 271 and 272: 252 Joseph R. Licina authorized to
Page 273 and 274: 254 Joseph R. Licina a nuclear flas
Page 275 and 276: 256 Joseph R. Licina requirements:
Page 277: HMD PERFORMANCE ASSESSMENT PART THR
Page 280 and 281: 262 Clarence E. Rash, John C. Mora,
Page 286 and 287: Glossary 11
Page 288 and 289: 270 making stereoposis possible. Bi
Page 290 and 291: 272 John C. Mora and M elissa H. Le
Page 297 and 298: NOTES ON CONTRIBUTORS Melissa H. Le
Page 299: Notes on Contributors 281 Research
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284 Index Breakaway force (see Fran
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286 Index movement, 55, 80, 84, 90,
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288 Index 198, 204, 205, 208, 210,
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290 Index Microphone, 15, 186, 224,
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292 Index Speech intelligibility (S
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