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Wyświetlanie 1-4 z 4
Tytuł:
Sensitivity analysis for dynamic models of aerial munitions
Autorzy:
Żyluk, A.
Powiązania:
https://bibliotekanauki.pl/articles/243173.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
aircraft
air combat means
dynamic properties of aerial bombs
conditions on the aerial bomb’s flight path
trajectory of aerial bombs
Opis:
While investigating dynamic properties of aerial bombs, both the analytical and experimental outcome often find their applications. Analysis of how a series of changes in flight parameters affect flight dynamics is probably one of the most essential efforts throughout this study. Numerical solutions of equations of motion deliver no information on the effect of changes in the aerial bomb’s design parameters on flight characteristics thereof. Therefore, the theory of sensitivity has been used in the paper to investigate the effect(s) of external disturbances, drop/release conditions and technical parameters on the aerial bomb’s range and flight path. Among other, the elements of the theory of sensitivity, equations of motion, numerical analysis of sensitivity of the bomb-describing mathematical model to changes in some selected parameters, numerical analysis of sensitivity of the bomb-describing mathematical model to changes in some selected parameters, analysis of the effect of changes in drop/release conditions on the aerial bomb’s flight path, analysis of the effect of changes in engineering (design) parameters of the aerial bomb on the trajectory thereof, effect of drop conditions on the aerial bomb’s range, effect of drop conditions on the side deflection of the aerial bomb’s trajectory are presented in the paper.
Źródło:
Journal of KONES; 2013, 20, 4; 517-523
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The evaluation of the efficiency of active control system for aerial bomb
Autorzy:
Kowaleczko, G.
Żyluk, A.
Pietraszek, M.
Wijaszka, M.
Powiązania:
https://bibliotekanauki.pl/articles/244285.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
simulation
PID controller
laser-guided bombs
Opis:
The article presents the results of numerical simulation of a laser-guided bomb, which is dropped in calm weather conditions. The prototype of such a bomb was developed at the Air Force Institute of Technology. It was a result of the modification process of the classical training bomb. The modification consisted of building on the bomb's board a detection system to track targets that are designated by laser and a control system to adjust bomb’s glide path to precisely strike the target. In the simulation research, geometric and mass characteristics of the classical training bomb were used. Aerodynamic characteristics of the bomb have been determined using commercial software PRODAS. Using the mathematical model of the bomb spatial motion and model of the laser detection system series of simulations were performed. The main goal was to determine the effectiveness of the adopted construction solution. Therefore, simulations were performed for various initial positions of the bomb and fixed position of the target. It allowed finding the set of control laws coefficients giving the most accuracy of the bomb. The influence of structural modifications of the detection system on the possibility of effective detection and location of the target was also investigated. In the article, exemplary results of numerical calculations performed with the author's software are also shown.
Źródło:
Journal of KONES; 2018, 25, 4; 165-174
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of geometric characteristics of the bomb-fluger system on its dynamics
Autorzy:
Kowaleczko, G.
Pietraszek, M.
Klemba, T.
Powiązania:
https://bibliotekanauki.pl/articles/241709.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
guided bombs
bomb-fluger system
aerodynamics simulations
Opis:
The article presents the results of numerical simulations of the bomb-fluger system drop. This system consists of two rigid bodies – a bomb and a fluger, which are connected by a biaxial joint. For the analysis, an author's program was used to simulate the bomb-fluger system drop. Influence of the characteristic points of the system on its stability and dynamics was investigated. Particularly, locations of a bomb mass centre, a fluger mounting point, a fluger aerodynamic focus were tested. The article presents a model of the examined bomb in the wind tunnel, characteristic points of a bomb-fluger system, waveforms of values rate of change angles and the values of angles for different distances, waveforms of values of the angle of nutation and the pitch angle of the fluger relative to the bomb, diagrams of examined points of the location of the centre of the mass and pressure of the fluger, waveforms of values rate of change angles and the values of these angles for different locations of the centre of the mass of the fluger, waveforms of values of the angle of nutation and the pitch angle of the fluger relative to the bomb for different locations.
Źródło:
Journal of KONES; 2018, 25, 4; 155-163
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Feasibility of measurements in examination of air weapons
Autorzy:
Żyluk, A.
Pietraszek, M.
Powiązania:
https://bibliotekanauki.pl/articles/243450.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
aircraft
air combat means
flight tests of combat means
data recorders for parameters of air combat means
avionic bombs
on-line data transmission systems
Opis:
Specific features of air weapons, dynamic examinations as an important component of the investigation process, examples of data recorders for parameters of the combat mean under test, telecommunication system for on-line data transmission with the assumption that the system should be composed of components and subassemblies that are commercially available from the market, system for RF transmission of flight parameters in the real time mode are presented in the paper. The system is made up of a transmitter and rpm sensors embedded into the head of the S-7 uncontrolled missile. Signals from the telecommunication module are received and decoded by means of a transducer with the sensitivity of about 2PV and stored in the memory of the TDS 3020 digital oscilloscope from Tektronix as well as in a four-channel digital recorder. The data acquisition system is triggered at the moment when the transmitter installed on the missile head was switched on. The missile was launched several seconds later. The paper includes among others workflow for examination of combat means, composition of measuring instruments for flight tests, data recorders for flight parameters installed on avionic bombs, signal waveforms recorded from rotation sensors and rotation speed variations for the S-7 missile during the flight
Źródło:
Journal of KONES; 2013, 20, 3; 451-460
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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