By Michael J.F.Bowyer

;Boulton-Paul Defiant [Aircraft Profile 117] КНИГИ ;ВОЕННАЯ ИСТОРИЯ Название: Boulton-Paul Defiant Автор: Michael J.F.Bowyer Серия: airplane Profile 117 Издательство: Profile courses Ltd Год издания: 1966 Страниц:12 Формат: PDF в rarЯзык: английский Размер: 1.61 Мб Для сайта: Мир книгBoulton-Paul Defiant был создан перед самым началом Второй Мировой согласно концепция, в соответствии с которой истребители должны были оснащаться пулеметной турелью с силовым приводом. Это сулило некоторый преимущество в воздушном бою, но, как оказалось, и породило ряд недостатков. В результате этот истребитель стал использоваться ночью, где он оказался весьма полезным, особенно после установки радиолокатора А1Мк zero

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A robot must be built in a way that allows its pieces to be used in a proper fashion. 3. A robot must follow the laws of geometry (demonstrated in Projects 2-1, 2-2, and 2-3). 37 CHAPTER 2 N CREATING A ROBOT BODY The First Law of Technic Robotics: Planning In my first book on LEGO Technic, I discussed the concept of wireframing. That book discusses how to build LEGO objects such as cars, planes, and various other vehicles. You will discover that when you build a robot, some of the work will be done on the exterior shell that surrounds the inner workings.

Technic Rack with Ball (6574). This is a small rack with two balls on it that helps in steering functions. 110. Technic Rack 7M (87761). This is a rack with a round hole on each end, with a 5M section of “teeth” in the middle. It also has two cross holes on the side. 111. Technic Toothed Bar 8M (6630). This particular rack doesn’t have a round hole to allow for Connector Pegs, but it does allow for studs. 112. Technic Toothed Bar 1 × 4 (3743). This is designed to connect to a 1 × 4 row of studs and good for rack-and-pinion steering.

You will see the Worm Gear used many times in this book. You can see an example of Worm Gear constructions in Figure 1-36. 29 CHAPTER 1 N WHERE TO BEGIN WITH YOUR LEGO TECHNIC ROBOT KIT Figure 1-36. These are two examples of constructions that use Worm Gears. If the Z16 Conical Gear is spun, then the circular gears will spin and so will the Angular Wheel. Note the one on the left is a 24-tooth Gear and the one on the right is an 8-tooth Gear. Notice the difference in individual construction Racks and Shock Absorbers The Rack pieces are designed to work with gears, and they can be used with a gear so they can shift in ways that will create some interesting creations.

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