Anyway, my point was that gliding back to the surface using the atmosphere is vastly smarter than burning fuel to fight gravity to achieve
a vertical landing. As you noted, it reduces the payload substantially. It is just another SpaceX gimmick. Like their so-called ventilators for
Covid-19.
Which is what I was trying to say... using rocket fuel to land only makes sense with docking in space or landing on objects with no atmosphere like the moon or an asteroid... when the primary landing site will be earth then wings are much more efficient and reliable...
Agreed. Either Karma doesn't work or it works very slow.
However, we as individuals can develop a value system without citing such supra-human divine database & evaluation
If Karma worked then life could be fair, but life isn't fair... good things happen to bad people and bad things happen to good people... life is random.
But random is no way to live your life, we can survive if we acted like the US... always in our own personal interests and screw everyone else.
A human on their own is weak, but a group of humans working together is immensely strong and powerful... it was not opposable thumbs and tools that make us more successful than other animals, it is the ability to communicate and work together to achieve things as a group what we could not achieve on our own.
To work together we need trust and honesty and reliability and lots of other features... if you meet those levels then you can be accepted and part of a community... if you choose to be selfish you will usually end up fighting alone... which makes you weaker and more vulnerable.
Being open and honest leaves you open to abuse, but that is not a good reason to not be open and honest... just be more careful who you trust...
Right now the American people trust Musk, and he is effectively abusing that trust by making promises and claims and taking their money for stuff I don't think he will be able to deliver...
As mentioned on this forum, I suspect the Military are supporting him so they can effectively get funding for stuff they couldn't push through themselves... it is a bit like the joke that was the JSF programme... Boeing never had any intention of trying to compete with the F-35.... they spent their time and money developing technology they could use on their drones and other products using funding for the JSF programme...
Of course with all the problems with the F-35 did they still make the wrong choice... would Boeing have been better and fixing the problems and avoiding cost increases... well their efforts regarding the MAX failures suggests not...
Regarding going to Mars... my understanding was that the plan was to send robots to Mars to set up a base and start producing liquid water supplies that would ultimately be modified into hydrogen and oxygen supplies so in theory when the mission with humans leaves earth there should already be a fuel supply for evac on the ground ready to use if they need it. An expedition to Mars could include using graders to level a large area of land to create an airfield for landing... hell you could use an airship filled with hydrogen that is grown organically to float up to the very top of the Martian atmosphere... with a bit of propulsion it might be able to escape into space on its own if the materials can be made light enough and strong enough...
Last edited by GarryB on Sat May 16, 2020 11:50 pm; edited 1 time in total