Patents

Delphion intellectual Property Network
(The former IBM Patent Server)
esp@cenet
Patent search by the European Patent Organisation
FreePatentsOnline.com
FreePatentsOnline.com provides fast, easy-to-use access to millions of patents. Attorneys use this data for patent searching. Inventors too. Researchers use it to keep up on the latest developments in their field. And everyone can use it just to browse all the interesting (and sometimes crazy!) ideas that are out there. FreePatentsOnline.com now provides free PDF downloads.
US Patent Search
US Patent Search is the only site on the internet that allows you to download full issued patents and patent applications for FREE!
USPTO query page

Guide to Downloading Patent Copies on the Internet
USPTO query page

Guide to Downloading Patent Copies on the Internet

Materials and Processing

UN Classifications.
MatWeb
MatWeb: the Free Online Materials Property Database.
Engineering material properties
Designer's Guide
PMPA's Designer's Guide. A guide to better drawings for production.

Machine Shop Forum
Online forum for (hobby) machinists.

Clay Modelling
Clay Pattern Styling and Rigid Surface Casting In Today's Composite Industry. By Jack North, Vice President Chavant, Inc.
Making A Propeller Mold
by Bill Lee.
Procedure for Making Epoxy Tooling
Rapid Design through Virtual and Physical Prototyping. Carnegie Mellon University Spring 1997.
Hand Mixing Instructions for Epoxy Adhesives and Casting Compounds
Hand Mixing Instructions for Epoxy Adhesives and Casting Compounds. By Star Technology, Inc.
Compounding Instructions for Urethane Adhesives and Elastomers
Compounding Instructions for Urethane Adhesives and Elastomers. By Star Technology, Inc.
Mark Langford's KR2S Project
Mark Langford's KR2S Project and Online Builder's Manual.
Vacuum Bagging
The technique of vacuum bagging is used to construct foam core wings, either with a wet layup of fiberglass cloth and resin or to apply a wood veneer skin. By Chris Fouquet.
How to make your own fin
Making fins for windsurfers. By John Pilling.
Composites Short Course
An Introduction to Laminated Composite Theory
One-Off Construction Using GRP/Urethane Foam Composite
An Overview of How to Work With fiberglass Over Urethane Foam. By Robert Q. Riley Enterprises
ANODISING ALUMINIUM
Anodising is an electro-chemical process which physically alters the surface of the metal to produce a tough oxide layer on the surface. During the anodising process the oxide layer is at first porous, and at this point it's possible to introduce a coloured dye...By Chris Heapy
O-ring Groove Cutting Tool
A simple tool for cutting O-rin grooves. By Greg Coleman
The Amateur Scientist
How to Build a Wind Tunnel That Achieves Supersonic Speeds with a Vacuum System. by C. L. Stong, October, 1966

Photo & Video

VideoRocketry.com
Welcome to the Clay Brothers' Video Rocketry site. While this site started as a means of sharing our video rocketry explorations, it has grown to be a site covering the sport of rocketry in general.

AN Flight Photos and AN/AP Flight Comparisons
NEAR SCA2000A launch video (4.9M)
Launch of a 40kg KNO3/Sorbitol rocket
Tom Woods Rocket Movies Page
Quick-Time movies from a Terrier-Black Brant rocket.

Other Stuff

Explore Mars
Explore Mars with the program that NASA scientists use to operate Spirit and Opportunity.

SailAway Project
SailAway is a project meant to provide a good solar sail structure and flight simulator that can accurately account for orbit perturbations and structural details of the sail itself on flights through the inner solar system.

California Rocketry magazine
Scanned copies of the California Rocketry magazine.

Table of IP rating classes
IP ratings are the standard ratings for waterproofness and environmental sealing etc. From AQUATEXT

Balloon v1.0
The story of designing, building, launching, and recovering a high-altitude weather balloon.
FreeSpace
Whether it be through balloons, drone aircraft, rockets, or some yet undiscovered mode of locomotion, our goal is to prove that space can be reached cheaply, easily, and with the skills of an individual.
TAM
Trans Atlantic Model. A project for crossing the Atlantic ocean with a model aeroplane.

Safety manuals
LAUNCH RAILS

Mark Goll's list of common launch rails

Minnesota's High-Altitude Amateur Radio Balloon Project
Lots of ballooning links and links to other stuff relevant for ballooning - and rocketry
Airspace Classifications
Global Engineering Documents
Search the world's largest collection of technical standards - with over 125,000 documents available for electronic download

Geomagnetic Models
Geomagnetic Models and Software Available from NGDC

Magnetic Models
USGS GEOMAGNETIC MODELS AND CHARTS .
Heavens-Above
Online information for observation of satellites, Mir and the International Space Station , the Space Shuttle and the dazzlingly bright flares from Iridium satellites
Tank Specification Calculator.
The Panner Company tank designer
HubbleSite

Hubble Space Telescope news and image site.

Amateur Radio Exam Menu

This Ham Radio exam program was made for the the West Valley Amateur Radio Association's New Ham classes and is now open for public use.

TECHNICIAN CLASS AMATEUR RADIO LICENSE QUESTION POOL

The questions contained within this pool must be used in all Technician examinations beginning April 15, 2000, and is intended to be used up through June 30, 2003.

Larry's gas turbine jet engine
Do It Yourself Gas Turbine Web Page.
Pulse jet engine

Pulse jet project by Bruce Simpson.

Jet powered beer cooler
Some people just won't accept a warm beer....
* MARTINDALE'S * THE REFERENCE DESK *