Difference between revisions of "User:无心十二载/Sandbox"

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First, you need to decide on what the objective of your mission is. Then you figure out how to achieve said objective with the least cost and effort. The main objective of this tutorial mission is to get a satellite into a stable orbit around Kerbin. Upon creating a new vehicle, you are first required to choose a suitable command module. The available modules fall into two major categories: Manned and unmanned. If you want to send your Kerbals into space, make sure you pick a crew pod. If you want to keep your Kerbals safe while you dabble with your first excursions into the void, you can pick any of the unmanned modules. Remember the golden rule to keep overall mass as low as possible while maintaining your mission objective.
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=== Heatshield ===
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{{See also|Heat shield}}
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You also have to care of excessive heat or else dire consequences may result. Usually, heat is generated during reentry when you hit the dense atmosphere at insane orbital speeds of multiple times the speed of sound. The air being pushed out of the way is superheated and transfers some of its heat to the payload. Very small and sturdy satellites can be risked to survive reentry a bit warmed up if they follow a shallow enough reentry trajectory, but heavier payloads (usually manned pods) will require a dedicated part such as a heat shield.
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A heat shield is composed of ablative material, that gradually melts away during reentry, absorbing a lot of heat in the process. It should be placed right below the payload that is to return to Kerbin and has to have a sufficient diameter to cover the payload fully. It also is directional, so you have to ensure to hit the atmosphere with the heat shield facing forward. If your payload tumbles just slightly during reentry, a non-protected area could face the heated atmosphere and suffer explosion from overheating.
  
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The heat shield is fairly heavy. With experience, you can reduce its weight by reducing the thickness (right-click the part and reduce the amount of ablator), shaving off some more valuable kilograms. It also has an integrated decoupler, meant to be triggered after leaving the dense atmosphere, to reduce the weight the parachute has to slow down.
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在一切开始之前你需要先明确你发射火箭是去完成什么任务,以及如何用最少的成本与精力完成该任务。顺带一提,该教程的示例任务是将卫星送入一个绕 Kerbin 环行的稳定轨道。在设计一个新火箭的时候,你首先要选择一个合适的指令舱。指令舱的选择取决于你希望设计一款无人的探测器还是载人的飞船。如果你想把你的小绿人送进太空,那么你就要选择一个载人的指令舱。反之如果你希望在你探索太空的过程中不要出现小绿人的伤亡,那么就选择一款无人的指令舱吧。再次强调一下,火箭的吨位越小越好。
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=== 热盾 ===
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{{See also|Heat shield|热盾}}

Latest revision as of 14:02, 14 October 2024

Heatshield

→ See also: Heat shield

You also have to care of excessive heat or else dire consequences may result. Usually, heat is generated during reentry when you hit the dense atmosphere at insane orbital speeds of multiple times the speed of sound. The air being pushed out of the way is superheated and transfers some of its heat to the payload. Very small and sturdy satellites can be risked to survive reentry a bit warmed up if they follow a shallow enough reentry trajectory, but heavier payloads (usually manned pods) will require a dedicated part such as a heat shield. A heat shield is composed of ablative material, that gradually melts away during reentry, absorbing a lot of heat in the process. It should be placed right below the payload that is to return to Kerbin and has to have a sufficient diameter to cover the payload fully. It also is directional, so you have to ensure to hit the atmosphere with the heat shield facing forward. If your payload tumbles just slightly during reentry, a non-protected area could face the heated atmosphere and suffer explosion from overheating.

The heat shield is fairly heavy. With experience, you can reduce its weight by reducing the thickness (right-click the part and reduce the amount of ablator), shaving off some more valuable kilograms. It also has an integrated decoupler, meant to be triggered after leaving the dense atmosphere, to reduce the weight the parachute has to slow down.



热盾

→ See also: 热盾