WW1 HELP! Fighter planes and machine guns?

what were some of the problems associated with the assembly of aircraft machine guns et the different solutions proposed. What was the final solution?

From the very start, there was some debate over the uses (or usefulness) of aircraft in warfare. Many senior officers, in particular, remained skeptical.

Originally when the pilots took to the sky for reconnaissance in WW1 they died not have guns attached to the aircraft. The pilots did cary pistols but in the opening months they exchanged nothing more than belligerent than smiles and waves but shortly after they soon progressed to throwing bricks, grenades, and other objects, even rope, which they hoped would tangle the enemy aircraft's propeller soon they started to shoot at each other with their pistols and drop bombs on ground targets.

Soon after different variation were use to fix Machine guns to the planes. Plane designs also varied and one of the first aircraft to have a mounted machine gun was The pusher design had the engine and propeller behind the pilot, facing backward, rather than in front, The Machine gun could fire freely

The key to success was synchronization is a handle was pulled in the cockpit that lowered the cam follower onto the cam wheel attached to the propeller shaft. When the cam raises the follower, a rod is depressed against the spring, enabling the trigger plate to be reached when the firing button is pressed.

here is a diagram

http://en.wikipedia.org/wiki/File:Interrupter_gear_diagram_en.png

Some panes also carried a "safety backup" in the form of "deflector blades" (metal wedges) fitted to the propeller at the point where they would be struck by a bullet

Some machine guns were impossible to synchronize due to the open bolt design.

Another method used at this time to fire a machine gun forward was to mount the gun to fire above the propeller arc. This required the gun to be mounted on the top wing of biplanes.

Other plans had two seats with a rear gunner,

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