| Marksmanship and Sentry Duty Performance under Extreme Environments |
JUL 1999 |
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| Authors:
R. F. Johnson; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
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 | The Weaponeer, a U.S. Army Ml6 rifle marksmanship simulator and training device, was adapted for assessment of marksmanship performance in the laboratory. The Weaponeer permits evaluation of marksmanship speed (ability to detect and to hit rapidly appearing pop-up targets) and accuracy (the variability, or "tightness," of the shot group). In Study 1, marksmanship was assessed while soldiers wore either the battle dress uniform (BDU) ... |
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| Rifle Shooting Accuracy During Recovery from Fatiguing Exercise |
1999 |
9 pages |
| Authors:
M. A. Ito; M. A. Sharp; R. F. Johnson; D. J. Merullo; R. P. Mello; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA MILITARY PERFORMANCEDIV
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 | The effect of aerobic exercise on rifle shooting accuracy was studied in a repeated measures design. Nine men (22.5 +/5.7 yrs.) and 3 women (21.0 +/4. 4 yrs.) active duty soldiers were tested. The volunteers were randomly subjected to 2 types of exercise until voluntary exhaustion: marching with backpack loads and running on a treadmill. Each exercise type had 3 randomly assigned exercise levels for a total of 6 exercise ... |
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| NDI Method for Quantification of Weak Bonding Strength of Composite Structures |
AUG 1997 |
29 pages |
| Authors:
R. F. Johnson; QUEST INTEGRATED INC KENT WA
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| This Phase I Final Report is for a Small Business Innovation Research program conducted for the Navy under Federal Contract N00189-96-M-JT09. The purpose was to investigate ways to determine the overall strength of a composite structure by using a nondestructive evaluative (NDE) optical technique, shearography. The purpose of the research was to determine if there is an effective way to assess the strength of composite components on in-service aircraft rather ... |
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| Track Tapering System |
NOV 93 |
79 pages |
| Authors:
J. C. Hake; R. F. Johnson; M. H. Marvin; QUEST INTEGRATED INC KENT WA
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| The Hypervelocity Test Track at Arnold Engineering Development Center (AEDC) is 880 feet long and is used for testing high-speed projectiles. Under many circumstances, it is desirable to taper the final 200 feet to improve the reliability of the projectile tests. A Phase II SBIR has been completed to implement a rapid track tapering system at the Hypervelocity Test Track. During this project, three key subsystems were designed and built: ... |
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| Proceedings of a Symposium - Consequences of Wearing the Chemical Protective Ensemble: Illustrative Assessment Approaches (33rd) Held in San Antonio, Texas on October 31, 1991 |
MAR 92 |
90 pages |
| Authors:
L. E. Banderet; W. Blewett; R. R. Gonzalez; R. F. Johnson; D. Redmond; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
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| Military personnel don the chemical protective clothing ensemble to preserve life and health in combat theaters when chemical attacks are likely. Unfortunately, the ensemble may also degrade military performance, heat balance, communication, sensation, motivation, and well-being. This symposium describes varied approaches for evaluating the chemical protective ensemble to highlight the utility of different assessment methodologies. Symposium participants contrast laboratory studies, field studies, simulations, and computer modeling. Specific military applications include: ... |
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| Noncontact Small-Diameter-Bore Gauge |
OCT 90 |
37 pages |
| Authors:
M. A. Lind; R. F. Johnson; QUEST INTEGRATED INC KENT WA
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| Current Peacekeeper and small ICBM guidance systems require measurement tolerances of 5 microinches on bores used in critical bearings in the SFIR (Specific Force Integrating Receiver) and TGG (Third Generation Gyro). A Phase I program investigated the feasibility of developing a noncontact measurement system based on the principLe of optical triangulation for characterizing the diameter and cylindricity of these bores. The study showed that the fundamental limitations to the measurement ... |
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| Backtracking and Forward-Tracking of Sediments in the East Equatorial Pacific: A Test of Assumptions, |
06 OCT 1976 |
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| Authors:
J. L. Matthews; R. F. Johnson; W. H. Berger; E. L. Winterer; SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CALIF
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| Numerical models are used to show that sediment thicknesses younger than Eocene in the east quatorial Pacific can be predicted by specifying paleolatitude, paleodepth, and time. Error analysis shows the effect of mistakes in the estimate of basement age and pole position on prediction of rate of sedimentation. (Author) |
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