3
3.0
texts
eye 3
favorite 0
comment 0
Topics: manualzz, manuals, EuroLite Outdoor Series manual, Outdoor Series pdf download, Outdoor Series User...
6
6.0
texts
eye 6
favorite 0
comment 0
Topics: manualzz, manuals, EuroLite DMX LED Operator 4 manual, DMX LED Operator 4 pdf download, DMX LED...
3
3.0
texts
eye 3
favorite 0
comment 0
Topics: manualzz, manuals, ADJ DJ Scan 250 EX manual, DJ Scan 250 EX pdf download, DJ Scan 250 EX User...
0
0.0
texts
eye 0
favorite 0
comment 0
Topics: manualzz, manuals, Robe Spot 575 XT manual, Spot 575 XT pdf download, Spot 575 XT Specifications,...
An investigate study of the three-dimensional, unsteady flow field about a sinusoidally pitching forward swept wing, straight wing and aft swept wing was conducted. The flow field was documented using a smoke wire technique and stroboscopic photography. Photographs were taken from both side and top view perspectives at span locations from wingtip to 1.33c inboard. A comparative study between these wings is made with the smoke sheet at identical span locations for each. The unsteady flow field...
Topics: DTIC Archive, Ashworth, J, COLORADO UNIV AT BOULDER, *STALLING, *THREE DIMENSIONAL FLOW, *SWEPT...
Stroboscopic interferometry is a technique for measuring the modes of vibration of mirrors that are lightweight and, therefore, unavoidably flexible. The technique was conceived especially for modal characterization of lightweight focusing mirror segments to be deployed in outer space; however, the technique can be applied to lightweight mirrors designed for use on Earth as well as the modal investigation of other optical and mechanical structures. To determine the modal structure of vibration...
Topics: NASA Technical Reports Server (NTRS), INTERFEROMETERS, MIRRORS, STROBOSCOPES, VIBRATION MODE, CCD...
This report gives current data collected at two locations in the southern Norwegian Sea July through September 1974. Data are reported in cumulative speed distribution graphs and graphs of vector averages.
Topics: DTIC Archive, Smith,Otis R, NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C, *OCEAN CURRENTS, *NORWEGIAN...
Analysis of aircraft and ground mounted infrared devices for runway collision in low visibility conditions; Evaluation of IR signatures of commercial aircraft, strobes and beacons, and ground vehicles; Study of IR atmospheric transmisson and laser propagation in fog and haze; Design of a two-color IR system for jet engine detection; and Application of laser technology to obstacle detection in fog. (Author)
Topics: DTIC Archive, Powell ,P E, BDM CORP MCLEAN VA, *INFRARED LASERS, *INFRARED DETECTORS, *RUNWAYS,...
We assessed the use of infrasound and strobe lights for redistributing yearling and subyearling migrant salmonids away from dewatering screens in the McNary Juvenile Bypass System. Infrasound signals were generated using two devices: a pump with a rotary valve and reciprocating pistons. We evaluated the former device operating at 20 Hz in spring based upon differences in mean counts of migrant smolts across the channel during hourly sound%-on and sound-off treatments (-on=20). We evaluated the...
Topics: DTIC Archive, Johnson, Peter N., ASCI CORP VICKSBURG MS, *ENVIRONMENTAL IMPACT, *FRESH WATER,...
A simulator performance experiment was conducted to evaluate three lineup visual landing aids for night carrier landing at the Visual Technology Research Simulator (VTRS), Naval Training Systems Center (NAVTRASYSCEN), Orlando, Florida. They were a strobe light (string of sequentially flashed lights) extending down the centerline of the landing deck, a searchlight mounted forward of the landing deck on the centerline, and a crossbar lineup system (a linear array of nine lights mounted on the...
Topics: DTIC Archive, Sheppard, Daniel J, ESSEX CORP ORLANDO FL, *LANDING AIDS, *NAVAL TRAINING, *VISUAL...
A tethered balloon position marker was developed for use by troops operating in heavy forests. The system consists of a ten cubic-foot aerodynamically shaped balloon, two solid chemical hydrogen generator inflation cartridges, a strobe light for night time use, a tether line, and a carrying case. The system is an improved version of a system developed earlier which used a spherical balloon and a cylinder of compressed helium for inflation. The improved balloon shape provides better vertical...
Topics: DTIC Archive, Wood, Benjamin F, ARMY LAND WARFARE LAB ABERDEEN PROVING GROUND MD, *BALLOONS, *NIGHT...
Previous research has shown that retinal slip can be a significant factor in causing motion sickness. Stroboscopic illumination is believed to prevent retinal slip by providing snapshots of the visual environment that are brief enough so each image is stationary on the retina. The purpose of this study was to determine the effectiveness of an 8 Hz stroboscopic environment as a motion sickness countermeasure during a nauseogenic flight in a helicopter. The study population was comprised of 20...
Topics: DTIC Archive, ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL, *EYE, *ILLUMINATION, *MOTION SICKNESS,...
Noncontact torquemeter measures torsional deflection of rotating shaft and results are viewed on vernier scale. Magnitude of torque must be calculated from measured deflection. Device has no electric connections with the rotating member and is easy to use.
Topics: NASA Technical Reports Server (NTRS), DEFLECTION, ELECTRIC MOTORS, MEASURING INSTRUMENTS, QUALITY...
0
0.0
texts
eye 0
favorite 0
comment 0
Topics: manualzz, manuals, Elation 36 manual, 36 pdf download, 36 Specifications, Elation user manuals,...
0
0.0
texts
eye 0
favorite 0
comment 0
Topics: manualzz, manuals, Eternal Lighting Cube RGBA manual, Cube RGBA pdf download, Cube RGBA User...
Overall, the results obtained in both the U.S. and the Russian space programs indicate that most space crews will experience some symptoms of motion sickness (MS) causing significant impact on the operational objectives that must be accomplished to assure mission success. At this time the primary countermeasure for MS requires the administration of Promethazine. Promethazine is not a benign drug, and is most frequently administered just prior to the sleep cycle to prevent its side effects from...
Topics: NASA Technical Reports Server (NTRS), COUNTERMEASURES, MOTION SICKNESS, AEROSPACE MEDICINE,...
The camera experiment controller interface provides communications between an HP9845 desk-top computer and a digital camera instrumentation set. It is used with two cameras in separate experiments. One camera is in an underwater housing used for measurement of beam spread function. The second camera is used aboard the vessel at the output focal plane of an optical spectrograph. The digital camera set includes the 100 x 100 pixel digital Reticon camera with its RS250 controller, the ITT...
Topics: DTIC Archive, Damron,Steven, SRI INTERNATIONAL MENLO PARK CA, *Data transmission systems,...
The United States Cost Guard has long been interested in using flashtubes as an aid-to-navigation. They are highly conspicuous and are energy efficient. In the single flick operation mode, mariners report difficulty in fixing the time (less than 10 milliseconds). This factorial experiment investigated the effect on observer performance as each of three factors was varied; (1) Flash Repetition Rate; (2) Flick Frequency; and (3) Number of Flicks comprising the multiflick flash. An analysis of...
Topics: DTIC Archive, Thacker, J R, COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CT, *NAVIGATIONAL...
An experimental study was performed in a simulator to measure visual disruption resulting from exposure to discontinuous (strobing) laser glare in a flight control task, and compare this to the disruption from continuous laser glare. Seven pilots performed a nighttime visual approach task across repeated experimental sessions. Flights were assigned to conditions including no-glare (baseline), continuous glare, and strobing glare. The strobing conditions included two additional nested...
Topics: DTIC Archive, Beer, Jeremy, NAVAL HEALTH RESEARCH CENTER BROOKS CITY-BASE TX DIRECTED ENERGY...
Atomization characteristics of an impinging jet injector were studied over a range of injection velocities and back-pressures typical of liquid rocket injectors. Sheet breakup length was measured by strobe light imaging and was found to decrease with increasing injection velocity and chamber pressure. The experimentally measured breakup length was compared to linear stability theory and agreement was found to improve with increasing chamber gas density. At low chamber pressures, disturbances...
Topics: DTIC Archive, Strakey, P A, AIR FORCE RESEARCH LAB EDWARDS AFB CA SPACE AND MISSILE PROPULSION DIV,...
Stroboscopic schlieren photography was used to investigate the effects of compressibility, reduced frequency, and amplitude on the dynamic stall of a NACA 0012 airfoil subjected to sinusoidal oscillation. The Mach number was varied from M at infinity = 0.25 to M at infinity = 0.45 (corresponding to a Reynolds number variation of Re = 450,000 to Re = 810,000); the reduced frequency was varied from k = 0.025 to k = 0.10. Oscillation amplitudes of alpha sub m = 5 deg and alpha sub m = 10 deg were...
Topics: DTIC Archive, Brydges, Bruce E, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *FLOW VISUALIZATION,...
To enhance the quality of the theatre experience, the film industry is interested in achieving higher frame rates for capture and display. In this talk I will describe the basic spatio-temporal sensitivities of human vision, and how they respond to the time sequence of static images that is fundamental to cinematic presentation.
Topics: NASA Technical Reports Server (NTRS), VISION, HUMAN BEINGS, MOTION PICTURES, CINEMATOGRAPHY,...
3
3.0
texts
eye 3
favorite 0
comment 0
Topics: manualzz, manuals, Chauvet 86 manual, 86 pdf download, 86 User manual, Chauvet user manuals,...
0
0.0
texts
eye 0
favorite 0
comment 0
Topics: manualzz, manuals, Servis-Rhino 2412 manual, 2412 pdf download, 2412 Operator`s manual,...
The insertion of MEMS components into aerospace systems requires advanced testing to characterize performance in a space environment. Here we report a novel stroboscopic interferometer test system that measures nanometer-scale displacements of moving MEMS devices. By combining video imagery and phase-shift interferometry with an environmental chamber, rapid visualization of the dynamic device motion under the actual operational conditions can be measured. The utility of this system is further...
Topics: DTIC Archive, Conway, J A, AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS, *AEROSPACE SYSTEMS,...
The expansion of battery material during lithium intercalation is a concern for the cycle life and performance of lithium ion batteries. In this paper, the electrode expansion is quantified from in situ neutron images taken during cycling of pouch cells with lithium iron phosphate positive and graphite negative electrodes. The impact of various charging cycles and rates on electrode expansion was investigated. At low C-rates the measured battery thickness was a function of State of Charge (SOC)...
Topics: DTIC Archive, ARMY TANK AUTOMOTIVE RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI, *LITHIUM...
The target duration required for the precise discrimination of velocity is quite short, amounting to about 100 msec for a single moving dot or line target. While stroboscopic motion is an adequate substitute for continuous motion in velocity discrimination, optimal discrimination depends on the use of a strobe rate greater than 10 Hz. Generally human observers have difficulty detecting acceleration in moving targets. Over small distances (0.5-1 deg), timing signals from adjacent targets...
Topics: DTIC Archive, McKee, Suzanne P., SMITH-KETTLEWELL INST OF VISUAL SCIENCES SAN FRANCISCO CA, *VISUAL...
Results obtained from space flight indicate that most space crews will experience some symptoms of motion sickness causing significant impact on the operational objectives that must be accomplished to assure mission success. Based on the initial work of Melvill Jones we have evaluated stroboscopic vision as a method of preventing motion sickness. Given that the data presented by professor Melvill Jones were primarily post hoc results following a study not designed to investigate motion...
Topics: NASA Technical Reports Server (NTRS), AEROSPACE MEDICINE, MOTION SICKNESS, VISION, STROBOSCOPES,...
6
6.0
texts
eye 6
favorite 0
comment 0
Topics: manualzz, manuals, elektraLite UFO 8 manual, UFO 8 pdf download, UFO 8 User manual, elektraLite...
Strobing laser glare may present a threat to aircrew. In addition to obscuring the visibility of instruments and terrain (as continuous exposures can), strobing exposures could potentially impede visual motion processing. This report describes a study in which a low cost, medium-fidelity virtual cockpit environment was used to measure the effects of strobing vs. continuous laser exposure on performance in a visual flight task. Results suggest that strobing laser glare poses a legitimate threat...
Topics: DTIC Archive, Beer, Jeremy, VERIDIAN CORP SAN ANTONIO TX, *EYE SAFETY, *LASER SAFETY, IMAGE...
8
8.0
texts
eye 8
favorite 0
comment 0
Topics: manualzz, manuals, EuroLite LED Cube LED for CB-8 IR Controller manual, LED Cube LED for CB-8 IR...
8
8.0
texts
eye 8
favorite 0
comment 0
Topics: manualzz, manuals, elektraLite ELEKTRIC EYE H.P. manual, ELEKTRIC EYE H.P. pdf download, ELEKTRIC...
Three experiments were conducted during 1989 by the U.S. Coast Guard Research and Development (R&D) Center to evaluate night vision goggles (NVGs) for their effectiveness in detecting small targets at night. Three types of NVGs were evaluated: the AN/AVS-6 Aviators Night Vision Imaging System (ANVIS) NVG was tested onboard Coast Guard HH-3 and CH-3 helicopters, and the AN/PVS-5C and AN/PVS-7A NVGs were tested onboard 41-foot Coast Guard utility boats (UTBs). Simulated persons in the water...
Topics: DTIC Archive, Reynolds, W H, ANALYSIS AND TECHNOLOGY INC NEW LONDON CT, *GOGGLES, *NIGHT VISION...
Subjects can experience loss of consciousness (LOC) during exposure to sufficiently high +G sub z acceleration. LOC is usually preceeded by decreased visual sensitivity, dimming of the visual field, peripheral light loss (PLL) and central light loss. Real-time monitoring of PLL as a measure of + G sub z tolerance on the human centrifuge presently requires an active response by the subject. In contrast, the visual evoked potential (VEP) also reflects the integrity of the visual system and...
Topics: DTIC Archive, Nelson,John G, NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA AIRCRAFT AND CREW SYSTEMS...
A technique for synchronizing a pulse light source to charge coupled device cameras is presented. The technique permits the use of pulse light sources for continuous as well as stop action flow visualization. The technique has eliminated the need to provide separate lighting systems at facilities requiring continuous and stop action viewing or photography.
Topics: NASA Technical Reports Server (NTRS), CAMERAS, CHARGE COUPLED DEVICES, FLOW VISUALIZATION,...
0
0.0
texts
eye 0
favorite 0
comment 0
Topics: manualzz, manuals, Chauvet ST-3000LED manual, ST-3000LED pdf download, ST-3000LED User manual,...
6
6.0
texts
eye 6
favorite 0
comment 0
Topics: manualzz, manuals, elektraLite Pancake manual, Pancake pdf download, Pancake User manual,...
0
0.0
texts
eye 0
favorite 0
comment 0
Topics: manualzz, manuals, Silver Star WASH 250 manual, WASH 250 pdf download, WASH 250 Specifications,...
0
0.0
texts
eye 0
favorite 0
comment 0
Topics: manualzz, manuals, American DJ DMX OPERATOR manual, DMX OPERATOR pdf download, DMX OPERATOR User...
3
3.0
texts
eye 3
favorite 0
comment 0
Topics: manualzz, manuals, Elation 216 manual, 216 pdf download, 216 Specifications, Elation user manuals,...
1
1.0
texts
eye 1
favorite 0
comment 0
Topics: manualzz, manuals, Ayra ALO 030 manual, ALO 030 pdf download, ALO 030 User manual, Ayra user...
4
4.0
texts
eye 4
favorite 0
comment 0
Topics: manualzz, manuals, EuroLite Disco Strobe 50 manual, Disco Strobe 50 pdf download, Disco Strobe 50...
1
1.0
texts
eye 1
favorite 0
comment 0
Topics: manualzz, manuals, Elation Power Wash 575E manual, Power Wash 575E pdf download, Power Wash 575E...
0
0.0
texts
eye 0
favorite 0
comment 0
Topics: manualzz, manuals, BEGLEC IM-8S manual, IM-8S pdf download, IM-8S Operating instructions, BEGLEC...
A versatile electronic timing-and-control unit, denoted a rotorcraft strobe controller, has been developed for use in controlling stroboscopes, lasers, video cameras, and other instruments for capturing still images of rotating machine parts especially helicopter rotors. This unit is designed to be compatible with a variety of sources of input shaftangle or timing signals and to be capable of generating a variety of output signals suitable for triggering instruments characterized by different...
Topics: NASA Technical Reports Server (NTRS), CONTROLLERS, IMAGING TECHNIQUES, STROBOSCOPES, CIRCUIT...
In order to provide the unit commander with the greatest possible flexibility, the PHLS should consist of two components (an approach path indicator (API) and LZ marker lights) packaged as a set. The API will provide a tricolored glidepath to assist the pilot to a safe landing in a designated permissive LZ. The remotely controlled LZ markers will be used to mark the perimeter of the LZ and will have both an infrared (IR) and incandescent light capability. This would enable the markers to be...
Topics: DTIC Archive, MARINE CORPS WASHINGTON DC, *LIGHTING EQUIPMENT, *MARKER LIGHTS, *APPROACH LIGHTS,...
A method was sought for describing the response of visco-elastic materials to loading when the velocity of strain propagation in the material is the controlling factor. A machine is described that delivers a longitudinal impact at about 150 ft/sec to a yarn or strip. The impact is photographed using a high-speed stroboscope and a moving mirror. Strain-time-position data are obtained from the picture. Results are given for the impact of a rubber strip. InANOTHER EXPERIMENTAL TECHNIQUE THE FORCE...
Topics: DTIC Archive, PILSWORTH, MALCOLM N JR, QUARTERMASTER RESEARCH AND ENGINEERING COMMAND NATICK MA,...
2
2.0
texts
eye 2
favorite 0
comment 0
Topics: manualzz, manuals, Silver Star WASH 250 manual, WASH 250 pdf download, WASH 250 Product guide,...
Strobotactics, Vol.2 No. 2 Summer 1968 - General Radio Company
Topics: strobotac, speed, stroboscopes, shaft, lau, amalgam, hycam, multiple, vibration, radio, general...
The experimentally observed velocity of an aerosol droplet in an air-acetylene flame is compared to the velocity calculated through a new mathematical model. The experimental droplet velocity is measured by means of stroboscopic photography of a stream of individual droplets sent into a flame at a known frequency and traveling very reproducible trajectories. Because the temporal spacing between these droplets is known, a measure of the instantaneous droplet location enables their velocity to be...
Topics: DTIC Archive, Russo ,Richard E, INDIANA UNIV AT BLOOMINGTON DEPT OF CHEMISTRY, *AEROSOLS, *DROPS,...
