Jochen Wild

This book presents a detailed look at high-lift aerodynamics, which deals with the aerodynamic behavior of lift augmentation means from various approaches. After an introductory chapter, the book discusses the physical limits of lift generation, giving the lift generation potential. It then explains what is needed for an aircraft to fly safely by analyzing the high-lift-related requirements for certifying an aircraft. Aircraft needs are also analyzed to improve performance during takeoff, approach, and landing.The book discusses in detail the applied means to increase the lift coefficient by either passive and active high-lift systems. It includes slotless and slotted high-lift flaps, active and passive vortex generating devices, boundary and circulation control, and powered lift.Describing methods that are used to evaluate and design high-lift systems in an aerodynamic sense, the book briefly covers numerical as well as experimental simulation methods. It also includes a chapter on the aerodynamic design of high-lift systems.FEATURES Provides an understanding of the physics of flight during takeoff and landing from aerodynamics to flight performance and from simulation to design Discusses the physical limits of lift generation, giving the lift generation potential Concentrates on the specifics of high-lift aerodynamics to provide a first insight Analyzes aircraft needs to improve performance during takeoff, approach, and landing Focuses on civil transport aircraft applications but also includes the associated physics that apply to all aircraftThis book is intended for graduate students in aerospace programs studying advanced aerodynamics and aircraft design. It also serves as a professional reference for practicing aerospace and mechanical engineers who are working on aircraft design issues related to takeoff and landing.

In diesem Open-Access-Buch wird gezeigt, dass die Tragfähigkeit evolventisch basierter Zahnwellenverbindungen auf geradezu revolutionäre Art und Weise gesteigert werden kann, wenn für ihre Realisierung nicht das System zur Bezugsprofilgenerierung der [DIN 5480], sondern das in dieser Dissertation neu entwickelte, hoch innovative System zur Profilgenerierung zugrunde gelegt wird. Mit ihm werden, wie mit umfangreichsten Studien belegt wird, die Gestaltfestigkeitsgrenzen nicht nur verschoben, sondern völlig neu definiert. Des Weiteren werden Näherungsgleichungen zur Beschreibung der für das Kriterium der Gestaltfestigkeit optimalen Geometrien sowie für ihre zur nennspannungsbasierten Auslegung erforderlichen Grundgrößen entwickelt. Diese vereinfachen die optimale Ausführung evolventisch basierter Zahnwellenverbindungen außerordentlich. Darüber hinaus wird widerlegt, dass alternative Profilformen, die in der Regel erhebliche wirtschaftliche Nachteile haben, Tragfähigkeitsvorteile aufweisen. Mit dem neuen System zur Profilgenerierung ist nicht nur das volle Potenzial evolventisch basierter Zahnwellenverbindungen erschlossen, sondern zudem deren Anpassung an die an sie gestellten Anforderungen respektive Versagenskriterien möglich.

This book presents a detailed look at high-lift aerodynamics, which deals with the aerodynamic behavior of lift augmentation means from various approaches. After an introductory chapter, the book discusses the physical limits of lift generation, giving the lift generation potential. It then explains what is needed for an aircraft to fly safely by analyzing the high-lift-related requirements for certifying an aircraft. Aircraft needs are also analyzed to improve performance during takeoff, approach, and landing.The book discusses in detail the applied means to increase the lift coefficient by either passive and active high-lift systems. It includes slotless and slotted high-lift flaps, active and passive vortex generating devices, boundary and circulation control, and powered lift.Describing methods that are used to evaluate and design high-lift systems in an aerodynamic sense, the book briefly covers numerical as well as experimental simulation methods. It also includes a chapter on the aerodynamic design of high-lift systems.FEATURES Provides an understanding of the physics of flight during takeoff and landing from aerodynamics to flight performance and from simulation to design Discusses the physical limits of lift generation, giving the lift generation potential Concentrates on the specifics of high-lift aerodynamics to provide a first insight Analyzes aircraft needs to improve performance during takeoff, approach, and landing Focuses on civil transport aircraft applications but also includes the associated physics that apply to all aircraftThis book is intended for graduate students in aerospace programs studying advanced aerodynamics and aircraft design. It also serves as a professional reference for practicing aerospace and mechanical engineers who are working on aircraft design issues related to takeoff and landing.