Mechanical Engineering

Astronautics Stuctures Manual, Volume I, Volume II and Volume III - NASA's complete hand-design document for building rocketships.

Materials

UC Davis has some excelelnt information in their Material Science Department including the Composite Materials Handbook, MIL-17

V.1 (rev. F), Polymer Matrix Composites: Guidelines for Characterization of Structural Materials
V.2 (rev. F), Polymer Matrix Composites: Materials Properties
V.3 (rev. F), Polymer Matrix Composites: Materials Usage, Design, and Analysis
V.4 (rev. A), Metal Matrix Composites
V.5, Ceramic Matrix Composites

MatWeb: the Online Materials Information Resource