An online database to technical reports published by various NASA centers and programs. Full text PDFs of many NASA technical reports are available from 1958 onward. In addition, full text PDFs of reports from NASA's predecessor, the National Advisory Committee for Aeronautics or NACA, are available from 1917-1958.
Knovel Engineering e-books provides access to hundreds of authoritative engineering reference books providing materials property data and industrial process information with interactive capabilities that include data searching and retrieval into Excel, interactive graphing, unit conversion and a widget that makes it easy to access and use these features from anywhere.