"The "machine gun synchronization gear" was invented by a French pilot named Garros in 1915.
It was originally called the "machine gun deflection system," which initially involved strengthening the propeller with inverted triangular steel plates, coupled with a device linked to the engine shaft to minimize bullets hitting the propeller as much as possible.
If a bullet hit the propeller, it would be deflected by the inverted triangular deflector, effectively blocking the bullet.
Later, the plane he was flying was captured by the German Army, who then improved the system by changing the "engine shaft linkage" to "propeller linkage" for greater precision, thus formally ushering aerial combat into World War I.
From Shire's capitalist perspective, he might have been better off inventing the primitive "machine gun deflection system" first rather than directly bringing the "machine gun synchronization gear" into this world.
