Sökning: "aircraft"

Visar resultat 11 - 15 av 800 uppsatser innehållade ordet aircraft.

1. 11. Conceptual design of the next generation gas turbines : Modelling of a hybrid electric mixed turbofan for a trainer aircraft

   Uppsats för yrkesexamina på avancerad nivå, Mälardalens universitet/Akademin för ekonomi, samhälle och teknik

   Författare :Sophia Fisher; Michael Åkerström; [2023]
   Nyckelord :Hybrid propulsion; mixed turbofan; parallel configuration; performance;

   Sammanfattning : To mitigate climate change, all sectors must contribute their part. Electric propulsion system is a promising approach to reduce emissions from the aviation industry. A major challenge is however the low energy density in today’s battery technology. LÄS MER

3. 12. mmWave Coverage Extension Using Reconfigurable Intelligent Surfaces in Indoor Dense Spaces

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Zhenyu Li; [2023]
   Nyckelord :mmWave Communication; Reconfigurable Intelligent Surface; Ray Tracing; Indoor Dense Spaces;

   Sammanfattning : Millimeter-wave (mmWave) is widely investigated for indoor communication scenarios thanks to the available rich spectrum. However, the shortened antenna size and the high frequency make mmWave extra sensitive to blockages. LÄS MER

4. 13. Design Automation of Air Intake Lips on an Aircraft : How to implement design automation for air intake lips in a later design concept phase

   Master-uppsats, Linköpings universitet/Produktrealisering

   Författare :Wilma Blixt; Hilda Schönning; [2023]
   Nyckelord :Design Automation; Imagine and Shape; Subdivided surface; 3DExperience; CATIA; Air intake; MOKA; Knowledge Based Engineering;

   Sammanfattning : Air intakes are complex components that are critical for the propulsion of the aircraft. The design has to consider requirements from several different departments, often contradictory. Additionally, the air intakes need to cooperate with other critical components. This makes testing of the models crucial, hence time-demanding. LÄS MER

5. 14. HL-DRIP: A Blockchain-based Remote Drone ID Protocol registry management : Evaluation of a Hyperledger Fabric-based solution to manage DRIP registries

   Master-uppsats, Linköpings universitet/Institutionen för datavetenskap

   Författare :Juan Basaez Serey; [2023]
   Nyckelord :DRIP; Drone Remote ID; Hyperledger-Fabric; IPFS;

   Sammanfattning : On January 15, 2021, the Federal Aviation Administration published the Unmanned Aircraft System Remote Identification rule with the intention of improving airspace security regarding the use of Unmanned Aircraft. According to the rule, UAs in flight must provide the public with information such as their identification, location, and altitude. LÄS MER

7. 15. Utvärdering av förebyggande underhållsstrategi för elektriska flygplan

   M1-uppsats, Mälardalens universitet/Akademin för innovation, design och teknik

   Författare :Ammar Alfredsson; [2023]
   Nyckelord :Elektriska flygplan; Förebyggande underhåll; Batterier; Elmotor; Drivlinor; Hybrid; Smarta system;

   Sammanfattning : This thesis focuses on the topic of preventive maintenance for electric aircraft and aims to examine its significance and implementation within the aviation industry. Electric aircraft have become increasingly popular as a sustainable alternative to conventional aircraft, making it crucial to develop effective maintenance strategies to ensure their reliability and performance. LÄS MER