facility costs over mass production to the degree seen in more pedestrian manufacturing. Amongst liquid-fueled rockets, complexity can be influenced by how much hardware must be lightweight, like pressure-fed engines can have two orders of magnitude lesser part count than pump-fed engines but lead to more weight by needing greater tank pressure, most often used in just small maneuvering thrusters as a consequence. To change the preceding factors for orbital launch vehicles, proposed methods have included mass-producing simple rockets in large quantities or on large scale, or developing reusable rockets meant to fly very frequently to amortize their up-front expense over many payloads, or reducing rocket performance requirements by constructing a non-rocket spacelaunch system for part of the velocity to orbit (or all of it but with most methods involving some rocket use). The costs of support equipment, range costs and launch pads generally scale up with the size of the rocket, but vary less with launch rate, and so may be considered to be approximately a fixed cost. Rockets in applications other than launch to orbit (such as military rockets and rocket-assisted take off), commonly not needing comparable performance and sometimes mass-produced, are often relatively inexpensive. 2010s emerging private competition Since the early 2010s, new private options for obtaining spaceflight services emerged, bringing substantial price pressure into the existing market. See also Lists Chronology of Pakistan's rocket tests Lists of rockets Timeline of rocket and missile technology General rocketry Rocket propulsion Recreational rocketry Weaponry Rockets for research Miscellaneous Notes External links Governing agencies FAA Office of Commercial Space Transportation National Aeronautics and Space Administration (NASA) National Association of Rocketry (US) Tripoli Rocketry Association Asoc. Coheteria Experimental y Modelista de Argentina United Kingdom Rocketry Association IMR – German/Austrian/Swiss Rocketry Association Canadian Association of Rocketry Indian Space Research Organisation Information sites Encyclopedia Astronautica – Rocket and Missile Alphabetical Index Rocket and Space Technology Gunter's Space Page – Complete Rocket and Missile Lists Rocketdyne Technical Articles Relativity Calculator – Learn Tsiolkovsky's rocket equations Robert Goddard – America's Space Pioneer Articles containing video clips Chinese inventions Gunpowder Rocket-powered aircraft Space launch vehicles