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FlightGear Newsletter December 2013: Difference between revisions
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FlightGear Newsletter December 2013 (view source)
Revision as of 19:24, 16 December 2013
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=== Updated aircraft === | === Updated aircraft === | ||
The JSBSim P-51D is undergoing some significant improvements. The most interesting of these is the fully functional K-14A lead computing gun sight. The screen shot below shows the gun sight in action with the aircraft rolled over and pulling about 5G. You can see that there are two reticles. The small cross in the upper center of the reflector glass is the center cross of the fixed reticle and it's sight line corresponds with where the guns would shoot in straight and level flight (IE. slightly below the bore line of the guns). The reticle consisting of a center dot and six surrounding diamonds is the reticle that is controlled by the gyroscope which is what gives this sight it's lead computing functionality. In the screen shot the gyro reticle is displaced a significant distance from the fixed reticle and this distance is known as the deflection. Note also that the tracers from the guns are converging near the center of the gyro reticle giving an indication of how effective the new gun sight is when doing deflection shots. | The JSBSim P-51D is undergoing some significant improvements. The most interesting of these is the fully functional K-14A lead computing gun sight. The screen shot below shows the gun sight in action with the aircraft rolled over and pulling about 5G. You can see that there are two reticles. The small cross in the upper center of the reflector glass is the center cross of the fixed reticle and it's sight line corresponds with where the guns would shoot in straight and level flight (IE. slightly below the bore line of the guns). The fixed reticle has been masked so that only the center cross is visible. The reticle consisting of a center dot and six surrounding diamonds is the reticle that is controlled by the gyroscope which is what gives this sight it's lead computing functionality. In the screen shot the gyro reticle is displaced a significant distance from the fixed reticle and this distance is known as the deflection. Note also that the tracers from the guns are converging near the center of the gyro reticle giving an indication of how effective the new gun sight is when doing deflection shots. | ||
[[File:gunsight1.png|Screen shot of the K-14A in action showing the gyroscopic reticle rolled over pulling G. Note how the tracers are converging near the center of the gyro reticle. In addition, the fixed reticle is masked and only the center cross is visible. The fixed reticle center cross is the bore sight line.]] | [[File:gunsight1.png|Screen shot of the K-14A in action showing the gyroscopic reticle rolled over pulling G. Note how the tracers are converging near the center of the gyro reticle. In addition, the fixed reticle is masked and only the center cross is visible. The fixed reticle center cross is the bore sight line.]] | ||
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This is a ground view of the aircraft with the new drop tanks, bomb racks | This is a ground view of the aircraft with the new drop tanks, bomb racks and propeller. In addition you can see the back of the gun sight in the cockpit. The pink area on the back of the gun sight is the silica gel pack that keeps the internals of the gun sight dry. | ||
[[File:tanks&prop.png|Screen shot showing new droop tanks, bomb racks, propeller and part of the K-14A gun sight.]] | [[File:tanks&prop.png|Screen shot showing new droop tanks, bomb racks, propeller and part of the K-14A gun sight.]] | ||