Tutorial: Vostok 1/zh-cn
| “ | 在环绕地球的飞船上，我看到了我们的行星家园是如此的美丽。人类啊，请努力保留并升华这份美丽吧，千万不要毁灭它！ — 尤里·加加林 |
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在发射无人卫星并把它送入轨道之后，我们现在将进入太空探险的下一个篇章：把 Kerbal 小绿人送入太空并安全返回。
1961 年 4 月 12 日，苏联宇航员尤里·加加林乘坐“东方” 1 号飞船发射升空，并绕地球飞行。加加林是第一位亲眼从太空中观察地球的人，并亲身体验了长时间的失重。继“斯普特尼克”之后，苏联人又一次让美国的太空计划蒙羞，他们完成了首次载人航天飞行。这最终导致了约翰·F·肯尼迪总统的那次著名演讲，他表示将举全国之力在十年之内完成登月，因为他不希望看到苏联再次拔得头筹。
Ship Design
Ironically, the design of a manned craft is even a bit easier than that of an unmanned one, because the crew capsule is self-sustaining. That means we don't have to worry about energy supply like we did for Sputnik. Instead of that we need to add another component to ensure the survival of Yuri Kerbarin: A parachute.
But this time we still have a slightly larger payload. We will also need some extra fuel to de-orbit our vessel and get it back to the ground. We will solve this issue just like the Soviets did: By taking the Sputnik rocket and adding an additional 3rd stage to it.
- Payload stage
- Third stage
- Second stage
- First stage
Note that the monopropellant thrusters and their fuel are still on the second stage. That means they won't be available on the last stage. That's not a problem, though: the capsule itself also has some steering power which is more than enough for control of the light upper stage.
Also note that the upper stage isn't using the LV-T30 engine but the much lighter and energy-efficient LV-909. It won't be used before leaving the atmosphere, and in that phase it's much better to have less powerful but more economical thrust.
Mission Phases
Launch
The launch goes just like that of Sputnik. Launch upwards, dump the first stage, ignite the second and do a gravity-turn after 10km. This rocket requires a much slower gravity-turn than the previous one due to the lower thrust-to-weight ratio of the 2nd stage. So turn the rocket very slowly to the direction marker. In this mission we completely burn the second stage to raise our apoapsis.
Before we reach the apoapsis (the LV-909 engine accelerates slower, so we should start accelerating before we reach it), we use the last stage to enter a circular orbit. Watch out that you don't burn all your fuel, because you still need some left to get back into the atmosphere.
Orbiting
To experience the flight from the perspective of Yuri, click on his portrait and select "IVA" (Intra-Vehicular Activity). This allows you to look out of the small window above him and take a look at Kerbin no Kerbal has ever taken before. Should you see only stars, rotate your craft accordingly (you can do so from the IVA perspective). Should you see only black, you likely are on the night side. Accelerate time until sunrise.
Re-Entry
After Yuri had his fun in orbit, it's time to bring him back home so he can shake hands with politicians, get his parade, write books and go to talk shows. To do so, wait until you are at the apoapsis of your orbit and accelerate retrograde until the trajectory points onto Kerbin's surface. Keep in mind that it doesn't take atmospheric drag into account, so your actual landing will be not as far as the trajectory indicates. Keep this in mind when you intend to land on ground.
When you enter the atmosphere, you will notice a dangerous-looking orange glow around the capsule due to atmospheric reentry heat. But don't worry: as of writing (0.19) this effect is purely visual and can not actually damage your vehicles (with the exception of extended solar panels). In later versions you will likely have to avoid going down too steep, or you will burn up in the atmosphere.
Landing
The real Gagarin didn't actually land with the Vostok 1 - he ejected in the lower atmosphere and landed with a personal parachute. Unfortunately KSP doesn't have personal parachutes (as of 0.19.1.54), so we are going to land with the capsule.
Before you activate your parachute, separate the thruster stage - the MK16 parachute can't carry much more weight than the command capsule. Then deploy the parachute.
There isn't really anything you can do wrong here. When you are in the atmosphere, just activate the parachute like you activate a stage (space), panic for a moment while it doesn't seem to be doing anything, and breath in relief when it opens automatically at exactly 500m above ground.
When the capsule has touched the ground, you can let Yuri exit the capsule by clicking on his portrait and then clicking on "EVA" (Extra-Vehicular Activity). Now you can walk around the landing area and pose in front of the capsule for some press photos.
What now
Now you can go to the next level and learn advanced orbital maneuvers: Extra-vehicular activities and docking.
