NASA report SP251 "Design of liquid propellant rocket engines " This book is intended as an introduction to the practical aspects of construction of liquid propellant rocket motors, not just another theory textbook. But it has its fair share of theory as well. This NASA report subsequently was published as a book - now generally known as Huzel & Huang after the authors. You can pay $US82 on ABE for the identical material printed in 1967. The material was declassified by NASA in 1969 so the ABE version is ahead of its time:-). Newer versions of this book are selling for $US105 - 155 on ABE books at present. 31 MB PDF 472 pages http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19710019929_1971019929.pdf The directory page that this is on possibly contains more data and files than I have seen on one page anywhere else on the web. All named with inscrutable NASA file names so you need to know what you are looking for. Ripping the lot may take a while ;-). RM -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist