The eclipse project

The Eclipse Project by Tom Tucker provides a readable narrative and a number of documents that record an important flight research effort at NASA’s Dryden Flight Research Center. Carried out by Kelly Space & Technology, Inc. in partnership with the Air Force and Dryden at Edwards Air Force Base in the Mojave Desert of California, this project tested and gathered data about a potential newer and less expensive way to launch satellites into space. Whether the new technology comes into actual use will depend on funding, market forces, and other factors at least partly beyond the control of the participants in the project. This is a familiar situation in the history of flight research.

Frequently, the results of discoveries through flight research are not implemented immediately after projects are completed. A perfect example of this phenomenon is the lifting-body research done in the 1960s and 1970s that finally lead to new aerodynamic shapes in the world of aviation and space only in the 1990s. Even then, the lifting-body shapes (for the X-33 technology demonstrator and the X-38 prototype crew return vehicle) were only experimental. Other technologies emerging from flight research, such as movable horizontal stabilizers, supercritical wings, winglets, and digital fly-by-wire moved more rapidly into actual use in operational flight vehicles, but it was never crystal clear at the start of a flight research project whether the results would simply inform future practice or would be adopted more or less completely by air- and spacecraft designers.