When trying to understand how rockets work, the implication of the law is that the greater the amount of propellant (mass) used at any given time combined with the associated increase in acceleration of the products from the engine’s exhaust provides a greater amount of thrust, or force. Ex...
So you can see that rockets have been in use quite awhile. The idea behind a simple solid-fuel rocket is straightforward. What you want to do is create something that burns very quickly but does not explode. As you are probably aware, gunpowder explodes. Gunpowder is made up 75% nitrate...
People have been heralding fuel cells as the next big thing in power supplies since the 1960s, when the Apollo space rockets first demonstrated that the technology was practical. Four decades later, there are hardly any fuel-cell cars on our streets—for a variety of reasons. First, the wo...
Air-breathing rockets have the potential to dramatically lower launch costs and may make space lots more accessible to normal people. See how it will work!
Alkaline Fuel Cell (AFC) This is one of the oldest designs for fuel cells; this type was the first the United States space program used to produce electricity and drinkable water on-board rockets and shuttles. NASA favored this method because the alkaline cell has high efficiency and a low ...
All fire extinguishers work on the basic principle of removing any of the three basic elements needed for combustion—oxygen, heat or fuel. Since their creation two centuries ago, fire extinguishers have played an integral part in saving lives being threatened by a perilous fire. ...
Join our Model Cars, Rockets & Trains World to learn how to make homemade rockets fly and model cars zoom. If you're a hobbyist looking to recreate Columbus's ships or add a realistic touch to your model railway, then check out our how-tos and submit you
Maybe you're of the same mind as Benjamin Franklin, who famously said: "There will be sleeping enough in the grave." But if you're like most people and you believe the key to a good day's work is a good night's rest, the best place to start is with your bed. You're going to...
Rockets Paints Cosmetics Nuclear weapons [source: Aerogel.org, Modern History] A Wonder of Thermal Management Thanks to aerogel's unique structure, its use as an insulator is a no-brainer. The super-insulating air pockets with the aerogel's structure almost entirely counteract the three methods...
Do the kitchen, bathroom, laundry room and clothes dryer exhaust systems all work properly? Are the HVAC systems in good condition? Are they adequate for the size of the house? Do they work as intended (temperature permitting)? Do any fuel-burning stoves or fireplaces, fireplace inserts, chim...