Hence the flow can be modeled where the air flows through an imaginary diverging duct, where diameter of propeller disc and diameter of the outlet are related.
12.
The Brownings were electrically fired and insulated cut-off points in the turret ring prevented the guns firing when they were pointing at the propeller disc or tailplane.
13.
In addition to the normal two synchronised Vickers guns inside the fuselage, it had four Lewis guns mounted under the lower wings, firing outside the propeller disc.
14.
The Rhino was a single synchronised Vickers machine gun firing through the propeller disc, while the observer in the rear cockpit had a Lewis gun on a pillar mount.
15.
There was a mooring compartment in the extreme nose and in a second section the pilots'multiply-windowed cabin was also well forward and in front of the propeller discs.
16.
The resultant force due to precession therefore acts on the propeller disc at 6 o'clock, causing a pitch up tendency as opposed to a left yaw tendency, as traditionally thought.
17.
The position of the propeller disc just behind the wing required the rear fuselage to be rather shallow, so it was formed by four longerons with plywood covering, resulting in a rectangular section.
18.
The H 110 carried a pair of Darne 7.5 m ( 0.295 in ) calibre machine guns, mounted in the wings just above the floats and firing outside the propeller disc.
19.
The speed of the propeller, and thus the distance that it travelled between the firing of the gun and the arrival of the bullet at the propeller disc, varied, of course, with engine revolutions.
20.
This meant that each gun was adjusted separately, an important feature, since twin synchronized guns were not set to be fired in strict unison, but when they were pointing at the same point on the propeller disc.
