***Sorry Sold***Sperry Bomber K13 Compensating Sight B-24 WWII
$195.00
Out of stock
SKU
A460
Sperry Bomber K13 Compensating Sight B-24 WWII. I have no idea if this is complete so it is sold as is. DD 103116
From the Internet: Sperry
Gunsight, K-13 Compensating Sight
The K-13 Compensating Gunsight, made by Sperry, is a electrically-powered gunsight designed to compensate for altitude and airspeed. Typically mounted on the rear housing of a 50 cal machine gun from a side/waist gun position in the aircraft. Used in Boeing B-17 Flying Fortress and Consolidated B-24 Liberator bombers during WW2. K-13 Compensating gunsight is a pneumatically powered gunsight designed to compensate for altitude and airspeed. Typically mounted on the rear housingof a .50 cal machine gun from a side / waist gun position in the aircraft. Used in Boeing B-17 Flying Fortress and Consolidated B-24 Liberator bombers. A compensating sight offsets the line of sight only to compensate for the speed of the firing aircraft. The earliest ones were the so-called wind-vane sights of World War I. The most popular AAF compensating sights were the K-10, K-11 and K-13. These sights do not take into account target range, but base their calculation on the angle between the gun line and the aircraft axis, using either two dimensional cams (K-10, K-11) or a mechanical analog (K-13). In these sights the full compensation for own speed is only applied when set to the STRAFE position. In all other situations only a fraction (about 65%) of the full compensation is applied, because in a pursuit curve the attacking aircraft’s speed has a component in the direction of the target’s flight.
It was a late war innovation that used the aircraft altitude and speed with the direct correlation of where the weapon was pointed to calculate the reticle. The aircraft altitude and speed was entered on the rear of the sight.
Sperry Bomber K13 Compensating Sight B-24 WWII. I have no idea if this is complete so it is sold as is. DD 103116
From the Internet: Sperry
Gunsight, K-13 Compensating Sight
DD 103116
The K-13 Compensating Gunsight, made by Sperry, is a electrically-powered gunsight designed to compensate for altitude and airspeed. Typically mounted on the rear housing of a 50 cal machine gun from a side/waist gun position in the aircraft. Used in Boeing B-17 Flying Fortress and Consolidated B-24 Liberator bombers during WW2. K-13 Compensating gunsight is a pneumatically powered gunsight designed to compensate for altitude and airspeed. Typically mounted on the rear housingof a .50 cal machine gun from a side / waist gun position in the aircraft. Used in Boeing B-17 Flying Fortress and Consolidated B-24 Liberator bombers. A compensating sight offsets the line of sight only to compensate for the speed of the firing aircraft. The earliest ones were the so-called wind-vane sights of World War I. The most popular AAF compensating sights were the K-10, K-11 and K-13. These sights do not take into account target range, but base their calculation on the angle between the gun line and the aircraft axis, using either two dimensional cams (K-10, K-11) or a mechanical analog (K-13). In these sights the full compensation for own speed is only applied when set to the STRAFE position. In all other situations only a fraction (about 65%) of the full compensation is applied, because in a pursuit curve the attacking aircraft’s speed has a component in the direction of the target’s flight.
It was a late war innovation that used the aircraft altitude and speed with the direct correlation of where the weapon was pointed to calculate the reticle. The aircraft altitude and speed was entered on the rear of the sight.
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