Sökning: "Aviation weather"

Visar resultat 1 - 5 av 17 uppsatser innehållade orden Aviation weather.

1. 1. Optimering av flyghastighet för flygplan

   Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

   Författare :Louise Larsson; [2023]
   Nyckelord :Aircraft flight speed; flight operations; speed optimization; Cost Index; ECON speed; Flyghastighet; flygverksamhet; hastighetsoptimering; kostindex; ekonomisk hastighet;

   Sammanfattning : Optimization of flight operations is a way to reduce the impact of aviation on the environment and make the use of airspace more effective. Reductions in fuel consumption and flight time are further desired by airlines to minimize operational costs. LÄS MER

3. 2. Benchmarking a 1 kW hybrid hydrogen fuel cell system

   Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

   Författare :Jonathan Envall; [2023]
   Nyckelord :PEMFC; fuel cell; UAV; hybrid; Technology and Engineering;

   Sammanfattning : Unmanned Aerial Vehicles (UAV's) offer great versatility in the tasks that they may perform and they are today used in many sectors. The H24LEO project, administered by the Lund University School of Aviation, aims to develop and demonstrate a hybrid proton-exchange membrane fuel cell-powered UAV to aid in search and rescue operations performed by the Swedish Maritime Administration, and reduce the greenhouse gas emissions compared to similar work performed by helicopters. LÄS MER

4. 3. Improving Visibility Forecasts in Denmark Using Machine Learning Post-processing

   Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

   Författare :August Thomasson; [2023]
   Nyckelord :visibility forecast; fog; machine learning; numerical weather predicition; XGBoost; Random Forest; siktprognos; dimma; maskininlärning; numerisk vädermodell; XGBoost; Random Forest;

   Sammanfattning : Accurate fog prediction is an important task facing forecast centers since low visibility can affect anthropogenic systems, such as aviation. Therefore, this study investigates the use of Machine Learning classification algorithms for post-processing the output of the Danish Meteorological Institute’s operational Numerical Weather Prediction (NWP) model to improve visibility prediction. LÄS MER

5. 4. Conform with the Wind : Processing short-term ensemble forecasts with conformal based methods for probabilistic wind-speed forecasting

   Master-uppsats, Lunds universitet/Matematisk statistik

   Författare :Simon Althoff; [2023]
   Nyckelord :wind-speed; probabilistic; forecasts; forecasting; ensemble; post-processing; conformal prediction; conformal predictive systems; quantile regression forest; non-exchangeable; Mathematics and Statistics;

   Sammanfattning : Forecasting wind has always been an interesting subject, and as large parts of the world are relying more on wind for power production it is becoming even more important to have reliable forecasts. Probabilistic forecasts, where distributions are predicted in contrast to deterministic forecasts, are impor- tant for informed decision making. LÄS MER

7. 5. Development of weather services for aviation personnel

   Kandidat-uppsats, Lunds universitet/Trafikflyghögskolan

   Författare :Daniel Nyberg; [2021]
   Nyckelord :Meteorology; weather; weather development; weather presentation; pilot; aviation; FLYL01; Technology and Engineering;

   Sammanfattning : Introduction: The following paper focuses on an operational view of aviation weather development. It intends to create a discussion about the current presentation models and available technology. Method: Literature review and use of other technological fields related to aviation. The study is limited to a pilot’s operational view. LÄS MER