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

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=== SAS ===
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=== Heatshield ===
{{See also|Stability Augmentation System}}
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{{See also|Heat shield}}
This toggleable assistance system included in all [[command module]]s (default: "T") supports rotation control (pitch, yaw, roll) of a vessel.
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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.
Manual control input will be dampened while SAS is active and slow the rotation rate to zero ("dampening mode"). This can be useful if you have very powerful rotation wheels that would cause too strong of a torque otherwise or to "brake" rotation.
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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.
  
If your vessel does not rotate, SAS switches to the "Locking" mode. It will now try to hold the current orientation (which is not to be confused with heading).
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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.
 
 
SAS uses the same means of control available to you as the user (reaction wheels, RCS, control surfaces, engines, etc.).
 
  
 
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=== 姿态稳定系统(SAS)===
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=== 热盾 ===
姿态稳定系统(SAS)和高级姿态稳定系统(ASAS)是坎巴拉太空计划里独有的系统。它们能够自动的辅助稳定你的火箭,并可以在飞行的任何时候通过默认设置的“T”键开关。在开启时SAS系统会尝试保持火箭当前的指向(不是速度方向)因此你将会发现你很难操作火箭进行转向。
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{{See also|Heat shield|热盾}}
 
 
SAS的稳定能力有限,不要指望它能让一个重心严重偏斜的火箭也正常升空。虽然SAS的力量可以通过简单的堆更多的SAS模块来改善,然而我们不建议你增加这么多的负载来实现一个在设计良好的火箭上根本不需要的设计(注:带一个ASAS还是有必要的)。
 
 
 
SAS会自动的操作火箭上任何能够提供控制能力的组件(例如有矢量推力的引擎,或是控制翼片,当然,后者只能在大气层中使用)大多数的液体引擎都会提供一定的矢量推力,通常来说这些引擎的矢量推力就足够让你的火箭能维持控制了。
 

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