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Wyświetlanie 1-2 z 2
Tytuł:
Importance of cut - off line in automotive headlamps aiming
Autorzy:
Targosiński, T.
Powiązania:
https://bibliotekanauki.pl/articles/246827.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
headlights aiming
cut-off line
road illumination
glare protection
Opis:
The basic element of passing beam headlights is the "cut-off line". It was intended in European beam pattern as tool for correct adjustment of passing beam according good road illumination distance and oncoming drive eyes protection of excessive glare. Cut-off line was established on the one hand as a natural part separating bright and dark area in the conventional passing beam, on the other assigned its essential function of the visual aiming of headlights. It is used in laboratory practices as well as in vehicles factories and in services and technical periodical inspection. The most important is that cut-off line was defined visually and subjectively over 50 years ago. But needed aiming precision according guaranteed road visibility and glare protection is much higher than historically moulded practical cut-off performance. In paper is analysed definition of cut-off line, their performance and meaning, historical evolution and influence for technical development of headlamps design. Also, mathematical approximation and modelling of cut-off line visual perception is described. The important is analysis of practical examples of real cut-off lines, their connections with significant beam pattern characteristics and possible ambiguous aiming during type approval and during vehicle exploitation. Also, analyzed are perspectives of future cut-off line use, development or - may be replacement by other means better serving this very important task to guarantee correct adjustment beam pattern according good road illumination and protection against excessive glare.
Źródło:
Journal of KONES; 2012, 19, 3; 469-476
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of inertia moment of infantry fighting vehicle turret on accuracy of aiming at a target and tracking of a target
Autorzy:
Papliński, K. M.
Stachowicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/244515.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combat vehicle
fire control system
gun stabilizer
amplitude of first overshoot
Opis:
In the paper was tested one of combat vehicles that is highly dynamic military vehicles, combining a high striking and fire power with high mobility and manoeuvrability. Were presented the mechanism of transfer of disturbance from the ground on the angular stabilized turret of the vehicle. Hull vibration caused by bumps in the ground. Angular and axial displacement of vehicle are the input signals acting on the turret and the gun. Two-axis stabilisation system compensates the velocities of the vehicle. Stabilisation system, automatically maintain the position of the turret at a fixed bearing in space. In spate of any motion of the vehicle in roll (hall transversal vibration) or in yaw (hall "snake-like" vibration). Torques and forces acting on the rigid body of combat vehicle turret are written in equations of motion. To examine the effect of mass inertia moment of the IFV turret on the size of first overshoot (to confirm the theoretical considerations) performed a simple experiment. Was measured the size of the angle of the first overshoot of the turret when braking rotating turret with a maximum angular velocity. Measurements were made on the IFV turret in the previously existing configuration, and when mounted on it extra weight. An experiment confirms the theoretical considerations. The results of measurements show that an increase of approximately 8 per cent of the mass moment of inertia of the turret causes about 16 per cent increase in the amplitude of the first overshoot.
Źródło:
Journal of KONES; 2011, 18, 1; 411-416
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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