This work is a brief course (25 lectures) in structural mechanics of rockets. The main material of lectures is the result of the long-term activity of the Samara State Aerospace University stuff (department "The Strength of Flying Vehicles"). The last two lectures the author wrote on basis of his own works. All formulas in the course derived in the possible simplest way. There is the English-Russian vocabulary after each lecture. The lectures include the study of the next items: 1. The beam theory essentials of thin-walled structures, 2. Basic equations of the elasticity theory, 3. The finite element method, 4. The basics of plate bending theory, 5. Stability and load-carrying ability of rectangular plates, 6. Rocket loads, 7. Calculation of the internal forces in a rocket body cross-section, construction of diagrams, working and assumed loads, a safety factor, 8. Rocket airframe analysis, 9. Dynamic analysis of a rocket, 10. Analysis of wings. The goal of this work is to give English and Russian students essentials of structural mechanics of rockets. For lecturers it will be useful too, the author hopes.