Parachute/zh-cn

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降落伞是在展开时通过产生阻力来减慢飞行器大气层中的速度的部件。在生涯模式下,这样可以回收降落在Kerbin上的飞船并收回资金

虽然理论上可以用降落伞回收像航天飞机的固体火箭助推器这样的火箭,但在实践中却很困难,因为在所有在大气层中离受控飞行器超过2.5公里的没有指挥部件的飞行器都会被移除。要想成功,必须确保主飞行器不在需要回收的助推器处于低层大气时进行圆轨。[1]

用法

Mk16降落伞上的选项

降落伞可以用于像KerbinEve这样具有大气层的天体,以减慢飞行器的着陆速度。减速的快慢取决于飞行器的质量和大气密度。因此,非常重的飞行器和降落在大气层稀薄的天体(DunaLaythe)上的飞行器都需要多个降落伞或额外的发动机才能软着陆。降落伞还可以辅助空气制动以产生额外的阻力。另一方面,较重的降落伞部件能比较轻的降落伞部件产生更多的阻力。降落伞还可以用来在太空飞机着陆的时候帮助它们停下来。

降落伞需要达到最低气压才能展开,因此它们不能在高层大气中和真空中打开(请参阅展开)。一旦降落伞所处的气压低于设置的最低气压,或飞行器静止了,降落伞将自动切断。

展开的降落伞也可以被手动切断(右键单击降落伞并点击切割降落伞)。切断后,1级以上的工程师可以在EVA时将它们重新打包。(为此,右键点击降落伞,然后单击重新包装降落伞。)重新打包的降落伞可以像新降落伞一样再次展开,但必须重新调整分级顺序才能正常用分级展开它们。

图标 含义
Parachute icon-ud at rest.png 处于静止/可以安全展开
Parachute icon-ud unsafe.png 无法安全展开
Parachute icon-dep unsafe notsemideployed.png 在不安全和气压不足的情况下展开
Parachute icon-destroyed.png 已被毁
Parachute icon-safe.png 展开有风险
Parachute icon-semideployed.png 已半展开
Parachute icon-fullydeployed.png 已完全展开

Changes were made to the staging icons in version 1.0.5. The staging background colour now indicates whether or not it is safe to deploy the parachute, being light grey when safe to deploy or at rest, a yellow-green colour to indicate that deployment may be risky (at around 250 m/s on Kerbin for main parachutes, nearly twice this speed for drogues) and dark red at any higher speed. The foreground colour (i.e. the colour of the parachute itself) indicates the state of the parachute, starting at white (unstaged/undeployed) and running through cyan (released but insufficient pressure to semi-deploy), yellow (semi-deployed), green (fully deployed) and bright red (destroyed).

A cyan parachute on a red background is therefore a highly undesirable combination since it means that the parachute has been released at too high a speed and will be destroyed as soon as air pressure is high enough for semi-deployment. Recovery will only be possible by slowing before air pressure rises, or (if time permits) by right-clicking the parachute to disarm it. Accidentally staging the parachute in space is therefore recoverable via the part's right-click window.

The mean parameters of the deployment are tweakable. The tweaking is possible in the small window popping up by right-clicking on the parachute in the editor or during the spaceflights:

Altitude (50-5 000 m) - The full deployment's altitude above ground level.
Min Pressure (0,01-0,5 atm) - The semi deployment's pressure threshold.

Parts

There are currently five options for parachutes.

图片 组件 径向尺寸 成本
(Funds)
质量
(t)
最高承受温度
(K)
冲击承受
(m/s)
冲击承受 Semi-Deployed
Diameter
Fully Deployed
Diameter
Semi-Deploy
Pressure
(atm) [注意 1]
Full-Deploy
Altitude
(m AGL) [注意 1]
Mk16 Parachute.png
Mk16 Parachute 很小 422 0.1 2 500 12 50 0.8 20.7 0.04 1 000
Mk16-XL Parachute.png
Mk16-XL Parachute 850 0.3 2 500 12 50 2.5 51.2 0.04 1 000
Mk2-R Parachute.png
Mk2-R Radial-Mount Parachute 径向安装 400 0.1 2 500 12 50 1.6 41.3 0.04 1 000
Mk25 Parachute.png
Mk25 Parachute 400 0.2 2 500 12 50 0.9 6.3 0.02 2 500
Mk12-R Radial-Mount Drogue Chute.png
Mk12-R Radial-Mount Drogue Chute 径向安装 150 0.075 2 500 12 50 1.3 7.7 0.02 2 500
  1. 1.0 1.1 This setting is tweakable


Deployment

Parachutes semi-deploy at a specific atmospheric pressure. which is situated in different altitudes on different bodies (rough semi deployment altitudes are shown below). Contrastingly, full deployment occurs depending on height above ground, not pressure. Deployment altitudes and pressures of various parachutes can be found in the above table.

Both of these deployment settings are tweakable; Although, the semi-deployment pressures are set at minimum by default, so it's only possible to delay semi-deployment by tweaking. A delayed semi-deployment, along with prior areobraking, can avert broken parachutes due to high temperature on reentry

Semi-Deployment Altitude (m)
Image Part Eve Kerbin Duna Jool Laythe
Mk16 Parachute.png
Mk16 Parachute 44 226 20 004 10 689 126 238 25 146
Mk16-XL Parachute.png
Mk16-XL Parachute 44 226 20 004 10 689 126 238 25 146
Mk2-R Parachute.png
Mk2-R Radial-Mount Parachute 44 226 20 004 10 689 126 238 25 146
Mk25 Parachute.png
Mk25 Parachute 46 315 23 547 14 912 134 228 31 829
Mk12-R Radial-Mount Drogue Chute.png
Mk12-R Radial-Mount Drogue Chute 46 315 23 547 14 912 134 228 31 829

Trivia

Pre-0.18 Mk16-XL
Pre-0.18 Mk16

Before version 0.18 the image shown in the part selector of the VAB and SPH showed the parachute deployed. Since then all parachutes are shown stowed.

References

  1. YouTube 上的“坎巴拉太空计划 - 第一份合同中的恢复和重用教程”,发布者:Scott Manley