Non-rocket Spacelaunch

Non-rocket Spacelaunch

Non-rocket space launch (NRS) is a launch into space where some or all needed speed and altitude is provided by something other than conventional chemical rockets. A number of alternatives to rockets have been proposed. In some systems, such as rocket sled launch and air launch, a rocket is involved to reach orbit, but it ignites after helpful initial altitude or velocity is obtained in another manner.

Transport to orbit is a large factor in the expense of space endeavors. If launch can be made much cheaper the total cost of space missions will be reduced. Present-day launch costs are very high – $10,000 to $25,000 per kilogram from Earth to low Earth orbit. Since theoretical minimum intrinsic energy costs are orders of magnitude less than those of rockets, the financial costs may conceivably be similarly slashed.

Many proposed space projects are hamstrung by the high cost of rocket launch. These include space colonization, space-based solar power and terraforming Mars. Bringing the cost of launch down would remove a major obstacle to such projects.

In addition to reduced costs, other expected benefits may be increased safety and reliability of launches to the point where it would allow for disposal of radioactive waste in space.