Upgrade:It is to use the chain, cable or friction wheel conveying the roller coaster to the highest point , the roller coaster have enough power to run the whole process, to know that the roller coaster separated from lifting with no external power, entirely by inertia.
Launch :It is use launchers move forward the roller coaster from the ground with great speed, after launching the same as above, roller coaster runs with the inertia during the whole process. In addition, after launching, the roller coaster will rush a largest hillside, and entering the climax of the whole process ,as the roller coaster has just been launched at a high enough speed for the roller coaster to reach the highest hillside.
Remark:Common launchers are: pneumatic launch, pressure wheel launch, magnetic launch (specifically divided into LSM launch and LIM launch), pulley launch, hydraulic launch, linear synchronous machine launch, linear asynchronous machine launch
Subduction and Deceleration
Subduction: It is generally mean that the roller coaster glide down by inertia . Passengers will feel weightlessness when the roller coaster diving. Subduction in the roller coaster after lifting to the highest point. Subduction is also a part of the hillside.
Deceleration: After the roller coaster gallop, eventually still have to return to the platform. Before returning to the platform, of course, the roller coaster must be decelerated first, which requires the use of a speed reducer. Common reducer: cylinder deceleration, magnetic brake
Some roller coasters in the middle of the process of deceleration, is to run half speed, and then continue to run. Some roller coasters in the final deceleration process will be buffered, that is, slow down, release, slow down, let go until the roller coaster back to the platform.