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    Wyświetlanie 1-5 z 5
    Tytuł:
    Logistics in today’s airforce shape of maneuver
    Autorzy:
    Łukowski, Dariusz
    Prokopowicz, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/2201555.pdf
    Data publikacji:
    2022
    Wydawca:
    Towarzystwo Wiedzy Obronnej
    Tematy:
    logistics
    mobility
    survivability
    aviation
    maneuver
    module
    logistyka
    mobilność
    przeżywalność
    lotnictwo
    manewr
    moduł
    Opis:
    In the era of dynamically developing unmanned systems and standoff ammunition, special attention should be concentrated on a new way to increase the viability of aviation differ from the concept of centralized single-capability air bases with advanced anti-aircraft systems. The concept of diversification of airports and landing sites, with the simultaneous location of multi-domain aviation task forces there, creates information saturation of the potential enemy and increases survivability of the force. Air bases become centers responsible for development of capabilities in order to establish properly prepared air forces task groups, capable to operate both closer to the FEBA (Forward Edge of Battle Area) and deeper into the own territory. This requires the creation of decentralized appropriate multi-domain logistics support systems. Provision based on autonomous logistic elements composed with resource packages located at appropriate operation level to firmly, flexibly and quickly secure aviation operations. The key is to depart from the philosophy of conducting operations, using specialized task groups of people and equipment, towards comprehensive multimodal and modular packages of combat and logistic capabilities.
    Źródło:
    Wiedza Obronna; 2022, 3; 125--136
    0209-0031
    2658-0829
    Pojawia się w:
    Wiedza Obronna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical analysis of MOB manoeuvres in regard to a body suffering from hypothermia
    Autorzy:
    Kulbiej, E.
    Rosik, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/135324.pdf
    Data publikacji:
    2018
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    MOB
    search and rescue
    maneuver
    Williamson turn
    hypothermia
    survival
    Opis:
    The following paper’s aim is to provide a numerical analysis of well-known man overboard (MOB) manoeuvres undertaken by vessels’ masters’ in critical situations, when a passenger or crew member falls out from a vessel. The simulation, based on a complex hydrodynamical model of a merchant ship, which compares 3 variants of this manoeuvre, shows that the Scharnov turn is the shortest and the quickest one, but the ship finishes the Anderson turn with the lowest velocity. Also, the time of the Williamson turn is short enough, to successfully finish the operation. The duration of MOB manoeuvres is likened to the results of a medical overview, with not only the duration of MOB, but also the time between falling overboard and the beginning of the manoeuvre playing a crucial role in saving a casualty’s life.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2018, 54 (126); 120-126
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation of helicopter boundary maneuvers of obstacle avoidance with predicted control function
    Symulacja granicznych manewrów śmigłowca omijania przeszkody z przewidywaną funkcją sterowania
    Autorzy:
    Stanisławski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/213951.pdf
    Data publikacji:
    2015
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
    Tematy:
    helicopter
    maneuver
    simulation
    śmigłowiec
    manewry
    symulacja
    Opis:
    Paper presents a simplified method of a simulation of a helicopter controlled flight applied in a program defining an execution of two versions of an obstacle avoidance maneuver, a vertical jump and a horizontal S-turn. Considering the operational limitations of a helicopter, the control function required for maneuver is determined in an iteration process. The flight path for an avoidance maneuver is tailored to pass within the limits of a tolerance strip.
    Przedstawiono uproszczoną metodę symulacji sterowanego lotu śmigłowca, którą zastosowano w programie określającym sposób wykonania dwóch wersji manewru omijania przeszkody, pionowego przeskoku oraz poziomego manewru. Uwzględniając eksploatacyjne ograniczenia śmigłowca w procesie iteracyjnym jest wyznaczana funkcja sterowania śmigłowca wymagana do wykonania manewru. Wyznaczenie symulowanego manewru jest prowadzone przy warunku przejścia toru lotu w granicach przyjętego pasma tolerancji.
    Źródło:
    Prace Instytutu Lotnictwa; 2015, 2 (239); 72-94
    0509-6669
    2300-5408
    Pojawia się w:
    Prace Instytutu Lotnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Empirical modeling of the relationship between decision sight distance and stopping sight distance based on AASHTO
    Autorzy:
    Bassan, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/224006.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    sight distance
    stopping
    maneuver
    speed
    deceleration
    decision
    odległość
    zatrzymanie
    manewr
    prędkość
    zmniejszenie prędkości
    Opis:
    The paper introduces implementation of highways' stopping sight distance (SSD) and decision sight distance (DSD) based on AASHTO modeling assumptions. SSD characterizes the necessary distance for highway vehicles to stop safely in front from an obstacle. SSD is a function of vehicle speed, perception reaction time, deceleration rate, and grade based on AASHTO and most highway design international guidelines. The deceleration rate which is assumed constant (3.4 m/sec2) based on AASHTO 2011 is generally controlled by the friction coefficient depending on the road surface conditions. A driver's demanded deceleration rate may not exceed the range of friction coefficient according to various pavement conditions. Although SSD is generally sufficient to allow skilled and alert drivers to the stop their vehicles under regular situations, this distance is insufficient when information is difficult to comprehend. A DSD should be provided in highways geometric design when the driver is required to detect an unexpected or difficult to perceive information source. Interchanges (specifically exit ramps) and intersections, and required changing in driver direction of travel, changes in the basic cross section such as toll plaza, lane drop, are typical scenarios where driver needs DSD in the safety manner. The introduction of the two sight distance types (SSD and DSD) is a perquisite for empirical modeling of the relationship between DSD and SSD. The modeling refers to DSD for rural highways, suburban roads, and urban roads based on AASHTO models. Specifically the paper covers DSD three avoidance maneuver types of stopping (types A, A1, B) and three maneuver types of speed, path, and direction changing (types C,D, E) for the three roadway categories. The major parameters that control these avoidance types are pre-maneuver times, and pre-maneuver plus maneuver times. The empirical relationship proposed in this study simplifies the process of evaluating the decision sight distance based on stopping sight distance record, based on AASHTO models, without the need of strenuous estimation of the DSD model maneuver and deceleration parameters. Such a simplified correlation has not been found in the literature except a rough approximation documented in the British highway design guidelines.
    Źródło:
    Archives of Transport; 2018, 48, 4; 7-25
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Elements of perfect order rate research in logistics chains
    Autorzy:
    Jacyna-Gołda, Ilona
    Kłodawski, Michał
    Lewczuk, Konrad
    Łajszczak, Marcin
    Chojnacki, Tomasz
    Siedlecka-Wójcikowska, Teresa
    Powiązania:
    https://bibliotekanauki.pl/articles/223482.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    sight distance
    decision
    stopping
    maneuver
    speed
    deceleration
    logistics chains
    order rate research
    ocena stanu zamówienia
    łańcuch logistyczny
    Opis:
    Perfect order rate (POR) is one of the superior measures of the logistics processes quality. POR is at the top of the hierarchy of key performance indicators (KPI) in supply chain and is considered as difficult to define and measure. Perfect order rate is composed of sub-measures touching technical, economic, quality and safety aspects of logistics processes. POR directly defines what the organization considers to be the perfect implementation of its tasks (and thus sets goals for the organization) and, secondly, measures the degree of achievement of these goals. The paper defines the concept of perfect order rate by including new elements to classic definition, so far rarely considered in the literature: possibility of order implementation according to standard procedures in organization and safety aspects. The concept of logistics chain and the impact of its functioning on the POR value have been defined. The picking and replenishment processes were discussed in detail as the basic elements affecting the quality of logistics processes and the value of POR. Next, the issues of logistic processes safety in warehouse facilities were discussed. The large intensity of warehouse operations along with their mechanization and automation very often leads to many hazards in warehouses and logistics chain. These hazard are usually related with warehouse workers safety. However, they can also lead to various delays or downtime in the material flows, as well as damage or reducing the quality of materials. So it was assumed that safety aspects can influencing the value of POR in the logistics chain. Due to conducted research and compiled reports indicate that many accidents in the warehouse are associated with the forklifts use as equipment for material handling. Therefore, in paper main attention was paid to hazards related with forklifts, warehouse safety speed, etc.
    Źródło:
    Archives of Transport; 2019, 49, 1; 25-35
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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