By Dennis R Jenkins, Tony Landis, Jay Miller
For it slow, it appeared the sequence of experimental plane backed by means of the U.S. executive had run its path. among the past due Nineteen Forties and the overdue Seventies, virtually thirty designations were allotted to airplane intended to discover new flight regimes or untried applied sciences. Then, principally, it ended. yet there has been a resurgence within the mid- to past due- Nineties, and as we input the fourth yr of the hot millennia, the designations are as much as X-50.
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Extra resources for American X-Vehicles: An Inventory-X-1 to X-50
Lockheed’s Kelly Johnson almost managed to get official backing of a commercial program, but in the end was defeated by military services that did not want to see competition for the funding necessary to complete the F-14 and F-15 programs. The X-27 was a major modification of the Lockheed F-104 Starfighter designed as an advanced lightweight fighter for foreign sales. S. Air Force declined to purchase a version of the aircraft. (Lockheed via the Jay Miller Collection) American X-Vehicles: An Inventory X-1 to X-50 Eventually the Air Force and Navy would embrace the lightweight fighter concept with the F-16 and (sort of) F/A-18, but Lockheed would not be a participant.
Pop-Up Upper Stages can expand the utility of advanced military space craft, allowing for wider ranges of payload deployment. This project reportedly includes technologies that will improve pop-up upper stage technologies and/or stages themselves. The X-42 will demonstrate individual orbit transfer propulsion capabilities that significantly enhance low-cost, high-performance access to space via revolu tionary propulsion techniques with improved designs, combustion and mixing technologies, and material advance ments.
Jenkins Collection) The X-39 designator was apparently reserved for use by the Air Force Research Laboratory for subscale unmanned demonstrators originally planned under the Future Aircraft Technology Enhancements (FATE) program. FATE was intended to develop revolutionary technologies that would become the foundation for next generation of combat aircraft. Examples of FATE technologies included affordable low-observable data systems, active aeroelastic wing, robust composite sandwich structures, advanced compact inlets, photonic vehicle management systems, selfadaptive flight controls, and electric flight control actuators.