You might need a few motors depending on the slope of the roof and the weight of the blanket. The motors work at 12v and 24v so you could run them with a battery and a voltage stepper. I will suppress my every urge. But not this shameless plug: A rocket mass heater is the most s...
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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 lin...
Coppiced wood was used to build almost anything that was needed in a community.5For example, young willow shoots, which are very flexible, were braided into baskets and crates, while sweet chestnut prunings, which do not expand or shrink after drying, were used to make all kinds of barrels...
“We would need close to 30 metric tons of oxygen to power that rocket to take those astronauts off the planet and into orbit,” Hecht said. “And if we have to take that 30 metric tons of oxygen with us to Mars, it’s going to push the whole mission a decade back. It’s much...
two solid rocket boosters (SRB) - critical for the launch external fuel tank (ET) - carries fuel for the launch orbiter - carries astronauts and payload The space shuttle flight path. The space shuttle flight path. Mouse over the boxes to see the stages. A typical shuttle mission is ...
I am thinking about trying to build a screened recycling tank to the used water. But before I go to all that trouble, I would like to have some idea how much water I would be using. If it’s 5 gallons, might not be worth the trouble of collecting. If it is 100 gallons, different...
I've been thinking about Orbital Physics more than Thermal Physics, lately but there's a parallel with the energy used by a rocket to 1. Escape from a planet's gravitational PE and 2. the KE left for interplanetary travel. The bonds at a water surface corresponds to the g from a mas...
Cooking with cast iron helps folks get more iron in their diet to build more red blood cells. Doctor's recommend that those with anemia cook with cast iron. Many of my happiest memories involving cooking, involved cast iron. I remember my grandad cooking almost everything we ate in a cast...
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