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also see plumes during these Apollo stage separations which Im assuming is occurring in space:
Originally posted by Komodo
reply to post by ProudBird
oh ..and why do i have to be qualified to ask a question ??
The amount of fuel needed to launch off the moon, to stay in orbit is seriously lacking to me; not to mention the amount of oxygen needed to breathe which I've posted way earlier in the thread ..
the math doesn't compute to the needs of the engine, physics or human consumption to proceed ..
And since you say you know the figures, why don't you provide them?? You lambast the reply for not having any - but you didn't actually do the courtesy of showing your own calculations so are equally "guilty"
.....just like this reply, all 'slam & bang' but no details..
President John F. Kennedy's decision in 1961 to land a man on the moon "before the decade is out" meant that NASA had to move quickly to find the best method of accomplishing the journey. NASA gave serious consideration to three options: Initially, direct ascent; then, Earth-orbit rendezvous (EOR), and, finally, a darkhorse candidate, lunar-orbit rendezvous (LOR).
Direct ascent was basically the method that had been pictured in science fiction novels and Hollywood movies. A massive rocket the size of a battleship would be fired directly to the moon, land and then blast off for home directly from the lunar surface. The trip would be like that of a chartered bus, moving from point A to point B and back to A again in one brute of a vehicle.
Strong feelings existed within NASA in favor of direct ascent, largely because it meant the development of a proposed giant booster named the Nova. After the engineers made their calculations, however, NASA realized that any single big rocket that had to carry and lift all the fuel necessary for leaving the Earth's gravity, braking against the moon's gravity as well as leaving it, and braking back down into the Earth's gravity again, was clearly not a realistic option-especially if the mission was to be accomplished anywhere close to President Kennedy's timetable. The development of a rocket that mammoth would just take too long, and the expense would be enormous.
The average adult at rest inhales and exhales something like 7 or 8 liters (about one-fourth of a cubic foot) of air per minute. That totals something like 11,000 liters of air (388 cubic feet) in a day.
The air that is inhaled is about 20-percent oxygen, and the air that is exhaled is about 15-percent oxygen, so about 5-percent of the volume of air is consumed in each breath and converted to carbon dioxide. Therefore, a human being uses about 550 liters of pure oxygen (19 cubic feet) per day. A person who is exercising obviously uses a lot more oxygen than that. You could determine how much air is moving through your lungs by exhaling into a plastic bag of known volume at each breath and seeing how long it takes to fill the bag.
Originally posted by Komodo
the 551 is the PURE oxygen, I'm talking breathable air which is being stated as
That totals something like 11,000 liters of air (388 cubic feet) in a day/24hr period per person or 2905.89 US gallons of air/24hrs which equals ..
231,000gals of air total for 3 astronauts for 7days.. and to be safe, should anything happen, to be on the safe side, double that to ensure they safe return is..
Now divide that by 5000gals (max tank size) =92.4gals tanks of air needed for the entire trip, even compressed that's 46.2 tanks needed.. and that's not converted into Cubit feet ..
I don't see those tanks ANYWHERE on the rocket, CM, LEM or CC..
but.. anways.. that's what i got ..
Originally posted by FoosM
The thrust hits the first stage and what do we see happening?
Secondly, Im sure if we watched from the other side, we would see a brightly hot glowing nozzle.
Originally posted by JohnnySasaki
reply to post by FoosM
Dude, obvious troll is obvious. You're embarrassing yourself, and that's pretty hard to do online. Just give it a break and admit we went to the moon already.
(Space.com) Apollo astronaut Edgar Mitchell has decided to give up the camera he kept as a memento of his 1971 moon mission rather than face a federal lawsuit over its ownership.
In a settlement he reached with the U.S. government filed with the District Court in southern Florida on Thursday (Oct. 27), the sixth man to walk on the moon agreed to "relinquish all claims of ownership, legal title, or dominion" over the data acquisition camera that flew with him aboard NASA's Apollo 14 mission.
Originally posted by Logical one
But what you haven't factored into your calculations is that the oxygen that Apollo crew uses got recycled and the out gasses scrubbed of cabon dioxide and resused.
so 290 kg of liquid O2 would appear to be enough to create 414,410 litres of gaseous O2 (290*1000*1.429), which would be 138,136.7 litres per astronaut.
According to this page the average person consumes about 550 litres of pure O2 per day - so if my math is right that oxygen load is enough for 251 days!!
That seems like a lot to me so perhaps my math is wrong somewhere?? Feel free to check it out.....
Originally posted by Aloysius the Gaul
reply to post by Komodo
Apollo didn't use "air" - the astronauts breathed a pure oxygen atmosphere at 5 psi.