• Content Count

  • Joined

  • Last visited

Community Reputation

1,847 Excellent


About magnemoe

  • Rank
    Flight Director

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. You can use lasers to generate trust, this should work well but require stuff like gigawatt laser arrays in orbit for smaller stuff. And yes we could gone to mars planted an flag and gone home and not gone again. Until the time of reusable rockets any space operations was idiotic expensive worth it for com sats and weather satellites, rest was security, military or prestige. On the other hand it should not be very hard to scale up starship 10x, you would need larger engines and even then might need an wider base on ultraheavy. 250 meter high and an starship diameter of 23 meters. Guess it could put 2000 ton into leo.
  2. Electrical rocket engines als ion engines are much used today. You might know them from KSP, the real world version has far less trust. So little that the probe who went to Ceres was not able to circulate on ions alone. However in real world you can have an probe do an week long burn. Generally you can select either high trust or high ISP. With very high energy fuel you can do both, project orion who would use atomic bombs as fuel is an obvious one. Antimatter would work much better.
  3. let us name the proto planet Wackjob in respect. KSP killed his laptop after all. Early solar system was idiotic violent, our moon was part of it. Mercury is pretty much an planetary core, was it the impactor or did Jupiter eat the bad guy? And yes Jupiter is the vacuum cleaner, Jupiter sized bodies is rare in exoplanet surveys, Likely to be another great filter.
  4. 6 fins will change how it handle reentry a bit, as in tumble and burning up who is kind of bad. Falcon 9 first stage has hinges in the direction of impact not 90 degree off it, it also does an suicide burn where minimum trust is more than the weight of the stage. The problem with starship is an lack of an simple abort system.
  5. Came here for cool snake robots and was disappointed
  6. Add that more legs will not easy let you use the fins as legs and that you need complex legs who folds out. The legs/ fins has one realistic failure mode, that is then they are used as fins. Once you have angled them outward they are safe. Unlike most landing gear the hinges is 90 degree to the landing force, mechanical the hinge is just an bolt who hold the leg in position, much easier to make strong than the upper triangle who absorb the compression at top of legs or the part of the engine trust structure who the bottom will be connected to. The forward fin is much more of an single source fail
  7. As other say send 3 of each. However if you just lick the upper edge of the atmosphere you can do sience in the upper atmosphere and return to Gilly with the data. Don't go deep 1 kilometer is more than deep enough. Heating here is not an serious issue either.
  8. The hinges on starship is 90 degree to the landing stress they can also flex a bit. the outward bend is absorbed by internal bracing, you might remember the triangle inside the hopper tank. Airplane landing legs are way more complex as they has to fold up. On large and heavy planes you tend to have to fold the wheel boggy at bottom to KSP hinges are weak Funny as that looks like an Jupiter gravity assist to get an close flyby of the sun, this works just as well both in KSP and real world. Yes in KSP you don't have to worry about radiation from Jool nor the cold and lack of sunlight out there while an RTG would have issue close to the sun.
  9. true , note that the Roman empire did not want local firefighting groups even if it would be obviously beneficially. Reason it might make an core of an resistance group. Nor did they organized themselves, easy to add to the task of the local garrison. But yes perspective kind of change, the Roman empire who might be the most powerful empire in its time would obvious been seen as an failed state today. Same with imperial china.
  10. This, with an small solid object you can vibrate it, with something like an spaceship measuring acceleration is easiest. Mass of say an asteroid is harder unless it has an moon.
  11. The problem is that unidirectional signals fades fast. As I understand an 1 megawatt broadcast signal would not be detectable at 50 lightyear even with an planet sized telescope as the signal to noise level would be to high. Add that early radio used frequencies who bounced off the atmosphere to increase range, TV does not. Now you might be able to pick up WW2 search radars or at least the cold war ones who was both in megawatt range and directional but they are just pings.
  12. Problem is that you need an power source. think the afterburner will be pretty heavy and have an minimum power demand who is also pretty high. Why not just stage and use an ion engine or other engines who is high isp but low trust.
  13. Soyuz still uses HTP for pump as I understand, yes its legacy and man rated. And it make the turbo pump into an steam turbine who is magnitudes easier. Last video I saw about Copenhagen suborbital they would copy this. But yes the pumps is an issue unless you go full flow who again increases difficulty by an magnitude. Its an reason why electron rockets work while electrical planes does not outside of niche uses.
  14. This and over pressure has been an standard test dating back to the age of steam. Probably older for testing cannons. Makes some sense as having your cannon becoming an half ton pipe bomb on an gun deck would be bad.
  15. SpaceX suit don't have an internal life support. None of the capsule suits are except perhaps an small air bottle for a few minutes so you can plug it up. Nor does any of the suits have an environmental control system like an EVA suit. Might be heated but cooling require an water loop. One benefit with the spacex and Boeing suit might be that they balloon less as they are more thigh fitting. The spaceman in the roaster was an publicity stunt although they might measured how suit behaved in space exposed to the sun.