Deep Science | Documentary Tapes

When The Humans Landed On The Moon                              YouTube Video : Deep Science | Documentary Tapes Moon Landing History :  #moon #apollo11 #moondocumentary #onegiantleepformankind on July 20, 1969, you’ve probably seen footage of the first Moon landing, when astronaut Neil Armstrong famously declared, “That’s one small step for [a] man, one giant leap for mankind,” and Buzz Aldrin helped him plant an American flag on the lunar surface. And didn’t they also ride around in a golf cart? Or did they putt a few golf balls? Actually, that was Alan Shepard with a golf club during the Apollo 14 mission. And that wasn’t a golf cart. It was a lunar rover, and it also came later: David Scott and James Irwin used one for the first time during the Apollo 15 mission. Considering that Americans lost interest in watching missions to the Moon after the first landing, you can be forgiven for not keeping all the details straight. You might be wondering just how many missions and how man

  Orbital Mechanics How Things Works YouTube Video : Deep Science | Documentary Tapes Gravity & Mechanics PAGE 4 OF 4 ON THIS PAGE How Orbits Work The Key to Space Flight Orbiting a Real Planet A Periapsis by Any Other Name Freefall How Orbits Work These drawings simplify the physics of orbital mechanics, making it easy to grasp some of the basic concepts. We see Earth with a ridiculously tall mountain rising from it. The mountain, as Isaac Newton first described, has a cannon at its summit. Of course, in order to make their point, the cartoons on this page ignore lots of facts, such as the impossibility of there being such a high mountain on Earth, the drag exerted by the Earth's atmosphere on the cannonball, and the energy a cannon can impart to a projectile ... not to mention how hard it would be for climbers to carry everything up such a high mountain! Nevertheless, the orbital mechanics they illustrate (in the absence of details like atmosphere) are valid. Newton's tho

 Nuclear Propulsion HOW STUFF WORKS      YouTube Video : Deep Science | Documentary Tapes  Nuclear Propulsion A nuclear-powered ship is constructed with the nuclear power plant inside a section of the ship cded the reactor compartment. The components of the nuclear power plant include a high-strength steel reactor vessel, heat exchanger(s) (steam generator), and associated piping, pumps, and valves. Each reactor plant contains over 100 tons of lead shielding, part of which is made radioactive by contact with radioactive material or by neutron activation of impurities in the lead. The propulsion plant of a nuclear-powered ship or submarine uses a nuclear reactor to generate heat. The heat comes from the fissioning of nuclear fuel contained within the reactor. Since the fissioning process also produces radiation, shields are placed around the reactor so that the crew is protected. The nuclear propulsion plant uses a pressurized water reactor design which has two basic systems - a primary

  How Rocket Engines Work YouTube Video : Deep Science | Documentary Tapes ­One of the most amazing endeavors man has ever undertaken is the exploration of space. A big p­art of the amazement is the complexity. Space exploration is complicated because there are so many problems to solve and obstacles to overcome. You have things like: HowStuffWorks 2005 See more  rocket pictures . ­ The vacuum of space Heat management problems The difficulty of re-entry Orbital mechanics Micrometeorites and space debris Cosmic and solar radiation The logistics of having restroom facilities in a weightless environment But the biggest problem of all is harnessing enough energy simply to get a spaceship off the ground. That is where  rocket engines  come in. Rocket Image Gallery Rocket engines are, on the one hand, so simple that you can build and fly your own model rockets very inexpensively (see the links on the last page of the article for details). On the other hand, rocket engines (and their fuel sys