I caught a segment on the news 2 days ago showing the landing. That was just so impressive and exhilarating . I was blown away. and the speed at which it shot to Mars: 12,000 miles per hour. I wonder if a human being was inside, in what shape they would have been at the time of the arrival? the link is incredible. Thank you.
Actually the astronauts in the space shuttle are traveling at about 17,500 mph when they reach orbital velocity.
thank you so much, your unassuming post is turning out to be a true little Iron Course. Holy Smoke… 17,500!!! I don’t intently mean to sound oblivious here but I am starting to believe that science is a god, not god to be worshipped but to be commanded and even ridden .
The crew of the Interantional Space Station are traveling at about the same speed, and if you notice, they all look pretty comfortable.
Yeah, they look more than confortable. The type of work, effort and search invested to get to such an end result must be astronomical.
The absolute speed you are traveling is not really very important. It’s the change in speed per unit time also known as acceleration that causes the g-forces that put all the stress on an organism/astronaut.
Again, I can only imagine what type of “accelerations” is meant here.
When they are preparing for re-entry the shuttle fires its OMS ( orbital manuevering system) engines ( those are the engines you see on the two pods on either side of the tail) to slow the shuttle to about 15,000 mph. At this speed the shuttle begins to fall out of orbit. As it does it encounters friction with the atmosphere which slows the shuttle down to its final landing speed of about 200mph. Going from 15,000mph to 200mph requires the shuttle to lose a lot of speed, but since it does this over an extended period of time, the g forces can be reduced to a manageable level. I’ve had trouble finding a reliable source of information for this fact, but I believe I read that the maximum g forces experienced by shuttle astronauts on reentry are less than 3 G’s during reentry.
would that be ok with you if you could elaborate on the type of “friction” you mentioned as well as the shuttle composite compounents used to managing that please?
So assuming a human was approaching Mars at 12,000 mph he/she should be just fine. Its the re entry thats the tricky part.
thank you so much for taking time, truly appreaciate it. Do the G’s get affected at all outside of gravity or do they remain the same? how do astronauts prepare for the re-entry (as well as exit out of earth) phase when they are still on earth?
PS: thank you so much for the article.