High Quality Content by WIKIPEDIA articles! A skyrocket is a type of firework that uses a solid rocket motor to rise quickly into the sky. At the apex of its ascent, it is usual for a variety of effects (stars, bangs, crackles, etc.) to be emitted. Sky rockets use various stabilisation techniques to ensure the flight follows a predictable course, often a long stick attached to the side of the motor, but also including spin-stabilisation or fins. A common misconception about professional...
High Quality Content by WIKIPEDIA articles! A skyrocket is a type of firework that uses a solid rocket motor to rise quickly into the sky. At the apex of its ascent, it is usual for a variety of effects (stars, bangs, crackles, etc.) to be emitted. Sky rockets use various stabilisation techniques to ensure the flight follows a predictable course, often a long stick attached to the side of the motor, but also including spin-stabilisation or fins. A common misconception about professional fireworks displays is that skyrockets are used to propel the pyrotechnic effects into the air. In reality, skyrockets are more widely used as a consumer item. Professional fireworks displays utilize mortars to fire aerial shells into the air, not rockets. However, a rising effect known as a "tail" may be attached to the outside of the shell to leave a trail of sparks during ascent, to give the look of a rocket rising into the sky. Mortars are used instead of skyrockets for safety reasons. Once the shell leaves the mortar it is no longer under propulsion, and therefore can not redirect itself towards a crowd, for example.
Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
В издании изложены основные проблемы комплексного подхода к созданию национального мультимодального транспортного коридора, ориентированного на круглогодичное функционирование, включающего Северный морской путь и тяготеющие к нему широтные и меридиональные речные, автомобильные и железнодорожные коммуникации, а также аэропортовую сеть. Рассмотрены вопросы разработки и внедрения...
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