*Allied Powers*

1. *Joe * *9/23/2010* *Aviation*Salmson Z-9 Radial Engine *Allied Powers* *America* *1918*

2. History *Is a radial engine , but is cooled with water. *This engine was installed in the Salmson 2A.2 airplane. *I chose this because it not only has the horse power but many of these engines were bought because they were so useful in the bigger planes in the war. *705 of these engines were bought from France by the United States Air Service.

3. *Comparison* *The Salmson Z-9 Radial Engine was in many levels better then the Oberursel UR-2. *Both engines have 9 cylinders but the Salmson Z-9 has more hores power then its opponent. *The Oberursel UR-2 was a lot smaller then the Salmson Z-9.

4. *What If* • If the Salmson Z-9 never existed then the Allies would have more problems winning the war because………….. • It was able to keep the Salmson 2A.2 up in the air with all the weight that was put in that plane. • It also could be cooled down with water when it got over heated and didn’t have to be stalled. • It overall was the better engine in the war.

5. *Bibliography* Aces Of World War One. (n.d.). century-of-flight [data sheet]. Retrieved September 22, 2010, from google website: http://www.century-of-flight.net/Aviation%20history/airplane%20at%20war/upload2/ Salmson%20Z-9.htm