Accusonics, Inc. (USA)
Accusonics manufactures dependable ultrasonic horns and ultrasonic tooling for all makes of Ultrasonic Welders. We also sell used ultrasonic welders.
http://www.accusonics.com/

Hilaunch
Sailplane accessories from Don Richmond. Includes adjustable tow hooks, control horns, and wing rods.
http://www.hilaunch.com

Red Wing Credit Union
Red Wing Credit Union is a full-service financial institution serving those who live or work in Red Wing, Minnesota.
http://www.redwingcu.com/

Beam
Truck air horns, stainless steel truck horns for trucks, trains, motorhomes and emergency vehicles. Truck horns at very competitive prices, order online - free shipping.
http://www.buytruckstuff.com/truckairhorns.htm

DDS Horns
Manufacturer of fiberglass horns and waveguides. USA.
http://www.ddshorns.com

Airchime Manufacturing Ltd. Air Horns & Whistles for Locomotives
Manufacturer of locomotive air horns and steam whistles for railway applications such as trains and locomotives including freight trains, passenger trains and rapid transit.
http://www.airchime.com/rail.asp

Supersonic wing simulator
A Java Applet that simulates the supersonic flow over a wing. To explore the quasi two-dimensional calculation of the supersonic flow over a wedge-shaped infinity-span wing.
http://odin.prohosting.com/~evgenik1/wing.htm

Industrial Ultrasonics, Inc
USA. Design and manufacture of a wide range of ultrasonic welding horns and fixtures. Also, refurbished welders, rebuilt converters, boosters, and ultrasonic welding accessories, and repair of existing ultrasonic horns. Detailed product catalogs.
http://www.industrialultrasonics.com/

Red Wing
USA. Footwear brands include Red Wing, Worx, Irish Setter, and Vasque. Searchable database for local vendors.
http://www.redwing.com/

Supersonic Wing Simulator
Explores 2-dimensional modeling of supersonic flow over the wing. The general part of page - Java Applet. This package may help: 1. calculate and display the graphic of streamline over the wing 2. find thermo-aero-dynamic parameters of flow 3. control airfoil geometry in "real-time" mode 4. calculate and draw aerodynamic polar
http://odin.prohosting.com/~evgenik1/wing.htm