Ancient Engineering SeriesMANGONEL.com
Ballistic Technologies of Antiquity
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Atreb Simulator


NOTE: This item is being sold as a download-able zip file. If you prefer a disk version, please review our CD-Roms at www.TrebuchetPlans.com. See below for download instructions.

System requirements: A PC running Windows.


"Atreb estimated that I would throw an 8 lb pumkpin 943 feet - I actually hit 927 during competition, but that was into a slight headwind. I'd say it's pretty accurate."
-- Chris Gerow, Winner of the 2000, 2001, 2002 and 2003 World Championship Punkin Chunk, Trebuchet division.

Q: What's the best way to learn about trebuchets?

A: Build a lot of them!

What's the easiest, cheapest and safest way to test your theories about trebuchet mechanics? Use a trebuchet simulator!

What is ATreb? "A" stands for accurate, and "Treb" is short for Trebuchet. This is by far the most accurate trebuchet computer simulation you can get!

Engineered and programmed by Les Scholz, this simulator goes beyond just lengths and weights! You can add the effects of air drag, friction, do stress analysis on your arm, sling, pin, axle... and work out all the finer details of your trebuchet design before you even buy a single piece of lumber. It also includes a metric conversion calculator, release pin optimizer, and you can save hundreds of design parameters and simply load them from disk to work on different projects at the click of a button.

Download Instructions:
This item is available as a download-only product. The download instructions will be automatically emailed to you as soon as your payment has been processed. Be sure to use a valid email address during checkout, or you will not get the instructions. Also make sure you can receive email from RLT.COM (you may need to add it to your "whitelist" if you have one) and if you do not receive the email within an hour of ordering, then be sure to check your junk mail folder.
$19.95
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    Price: $19.95
    Minimum age: 10
    Availability: In stock.

    Buy Now or Add To Cart
    Item code: 99001

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Interesting Notes

What is a Mangonel?


The term "mangonel" literlally means "engine of war." It is a ballistic device, usually some type of artillery. In other words, a catapult. But "catapult" is a more general word that includes a broad range of things that use mechanical means to shoot a projectile, including slingshots and aircraft carrier launch systems. So a mangonel is a unique type of catapult.

The word Mangonel derives from the ancient Greek word "Manganon", literally meaning "engine of war". The Romans called it a Manganum. In pre-medieval French the word Manganum was changed to Manganeau, and the English changed that to Mangonel in the 1300s.

The history gets a little sketchy in the middle ages, but some historians believe that "mangonel" was shortened to the word "gonnel" about the same time that cannons were being developed, and later still, "gonnel" was shortened to "gun." And to this day, in the military a gun is strictly big artillery. (Rifles and pistols are referred to as "weapons", NOT "guns".)

The three most common types of ancient mangonels are the Greek Ballista, The Roman Onager, and the Trebuchet.

In France, the word Mangonel is used for a Trebuchet that uses a fixed counterweight for power. (The other kind of trebuchet, the hanging counterweight type, is called a "Trebuchet". Go figure!)

The English use the term Mangonel and Onager interchangeably for the Roman single-arm torsion machine.

The Greek catapult, probably the first machine to be called a mangonel, was also known as the Ballista and is where we get the word "ballistic".