*Mechanical Transmissions in Helicopters*, edited by V. N. Kestel’man and featuring contributions from renowned authors such as Lev Borisovich Bushmarin, P. P. Dementyev, G. I. Ioffe, and Vladimir Nikolaevich Kestel’man himself, offers a comprehensive and in-depth exploration of one of the most complex and fascinating areas of aviation technology. This book is a must-have for engineers, students, and anyone passionate about helicopter design and mechanics. From the very first pages, readers are immersed in the world of mechanical systems that are vital to helicopter operation. The authors thoroughly examine different types of transmissions, their structures, and how they work, providing a clear understanding of how these systems ensure flight safety and reliability. The book combines theoretical insights with practical examples, making complex concepts accessible even to newcomers to the subject. Ideal for students of aerospace engineering and professionals involved in helicopter design and maintenance, this volume offers valuable information to enhance daily practice. Engineers, designers, and technicians will find useful details that support their work, while aviation enthusiasts eager to understand the mechanics behind helicopter flight will also find this book compelling. Covering a broad range of topics—from fundamental mechanical principles to cutting-edge technological advancements—the authors discuss not only traditional mechanical transmissions but also the latest innovations shaping modern aviation. This makes the book highly relevant for understanding current trends and future directions in helicopter technology. Written in a clear, logical style, the book aims to demystify complex technical concepts with straightforward language, making reading both engaging and educational. Each chapter features illustrations and diagrams that help visualize the mechanisms and processes described, which is especially important in technical literature. V. N. Kestel’man, both as an editor and contributor, is well-known for his work in mechanics and aviation. His expertise, combined with collaboration from other experienced specialists, lends this publication authoritative credibility. Readers familiar with Kestel’man’s other works will appreciate his ability to explain intricate topics simply and his deep understanding of the subject matter. *Mechanical Transmissions in Helicopters* is also valuable for researchers and developers working on new aviation technologies. It will serve as an excellent addition to the library of any engineer or student committed to professional growth and expanding their knowledge base. If you are seeking high-quality literature on helicopter mechanics, this book is a true treasure. It will not only deepen your understanding but also inspire new ideas and projects in the field of aviation. Don’t miss the opportunity to explore the exciting world of helicopter mechanical systems with this insightful publication!