| General > General Technical Chat |
| Starship 12.5km launch |
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| Brumby:
--- Quote from: Gyro on December 10, 2020, 10:33:32 pm ---I love Manley's description of "engine rich exhaust". That's even better than 'RUD'. ;D --- End quote --- Made me smile too. ;D |
| S. Petrukhin:
Please, explain what makes SpaceX so happy? With modern tools, they try to repeat what was done many years ago with primitive tools. Yes, well done, it's good that there is work for engineers, but this is the invention of the wheel. I bought a tube from an old soviet scope and want to make it a three-beam high-voltage low-freq scope with isolated inputs - will you be happy for me? :) |
| BravoV:
--- Quote from: S. Petrukhin on December 12, 2020, 06:21:10 am ---Please, explain what makes SpaceX so happy? With modern tools, they try to repeat what was done many years ago with primitive tools. Yes, well done, it's good that there is work for engineers, but this is the invention of the wheel. I bought a tube from an old soviet scope and want to make it a three-beam high-voltage low-freq scope with isolated inputs - will you be happy for me? :) --- End quote --- Well, at least for me, SpaceX did the inverted what Russia had done, which is turned the rocket falling in horizontal position, into vertical position while slowing down to be landed, while Russia as below example on the supersonic missile launch, that turned the rocket vertically into horizontal and leaving the land with acceleration. Ok, similar ... but ... nahh .. forget it. ::) |
| S. Petrukhin:
--- Quote from: BravoV on December 12, 2020, 07:03:19 am --- --- Quote from: S. Petrukhin on December 12, 2020, 06:21:10 am ---Please, explain what makes SpaceX so happy? With modern tools, they try to repeat what was done many years ago with primitive tools. Yes, well done, it's good that there is work for engineers, but this is the invention of the wheel. I bought a tube from an old soviet scope and want to make it a three-beam high-voltage low-freq scope with isolated inputs - will you be happy for me? :) --- End quote --- Well, at least for me, SpaceX did the inverted what Russia had done, which is turned the rocket falling in horizontal position, into vertical position while slowing down to be landed, while Russia as below example on the supersonic missile launch, that turned the rocket vertically into horizontal and leaving the land with acceleration. Ok, similar ... but ... nahh .. forget it. ::) --- End quote --- I didn't really understand what it was about... :-// In the video, the rocket is fired vertically because it is universal and very fast - you do not need to slowly turn around before launching, it can turn itself instantly. In addition, the main engine starts after the rocket is ejected by an ejecting projectile so that it does not blow anyone away on the ground. This has long been used in the missiles of many countries. And vertical jet landing has been used many times by NASA to land on the Moon. Soviet lunar rovers also had a vertical landing. This is a common thing, and all space countries already have these technologies. |
| BravoV:
--- Quote from: S. Petrukhin on December 12, 2020, 07:16:56 am ---In the video, the rocket is fired vertically because it is universal and very fast - you do not need to slowly turn around before launching, it can turn itself instantly. In addition, the main engine starts after the rocket is ejected by an ejecting projectile so that it does not blow anyone away on the ground. This has long been used in the missiles of many countries. --- End quote --- Cmiiw, I thought these kind launch style is to ensure the missile attitude is low, hence low radar footprint, either while cruising to the target or protecting the launch location. :-// Traditional missile like ICBM or common ones, launched vertically, and do not need to turn horizontally so fast right ? --- Quote from: S. Petrukhin on December 12, 2020, 07:16:56 am ---And vertical jet landing has been used many times by NASA to land on the Moon. Soviet lunar rovers also had a vertical landing. This is a common thing, and all space countries already have these technologies. --- End quote --- Moon has no atmosphere (hence no side wind) and much lower gravity, so these alone are not a major factors on the difficulty/complexity ? |
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