Hulkbust44 Posted July 30, 2022 Share Posted July 30, 2022 After inputting the TERM HDG for a JDAM, I noticed that the terminal heading indicator on the HSI was way off. Unsure if calculations were being made with this incorrect heading, but the symbology itself is certainly bugged. TGT_HDG.trk Link to comment Share on other sites More sharing options...
MARLAN_ Posted July 30, 2022 Share Posted July 30, 2022 This may be another case of true vs magnetic mismatching. I've lost track in how many spots it incorrectly uses true but that would be my first guess of what the issue is. Virtual CVW-8 - The mission of Virtual Carrier Air Wing EIGHT is to provide its members with an organization committed to presenting an authentic representation of U.S. Navy Carrier Air Wing operations in training and combat environments based on the real world experience of its real fighter pilots, air intercept controllers, airbosses, and many others. Link to comment Share on other sites More sharing options...
Frederf Posted July 30, 2022 Share Posted July 30, 2022 Terminal heading as selected for impact is 0-359 with respect to truth north. However the terminal heading cue on the HSI should point in the actual direction in the format of the HSI. E.g. if terminal impact azimuth was set 090 true east and airplane is flying true east then HSI cue should point straight up even if magnetic heading is 084. 1 Link to comment Share on other sites More sharing options...
MARLAN_ Posted July 30, 2022 Share Posted July 30, 2022 3 hours ago, Frederf said: Terminal heading as selected for impact is 0-359 with respect to truth north. However the terminal heading cue on the HSI should point in the actual direction in the format of the HSI. E.g. if terminal impact azimuth was set 090 true east and airplane is flying true east then HSI cue should point straight up even if magnetic heading is 084. You're right, I should have double checked first. Virtual CVW-8 - The mission of Virtual Carrier Air Wing EIGHT is to provide its members with an organization committed to presenting an authentic representation of U.S. Navy Carrier Air Wing operations in training and combat environments based on the real world experience of its real fighter pilots, air intercept controllers, airbosses, and many others. Link to comment Share on other sites More sharing options...
Frederf Posted July 31, 2022 Share Posted July 31, 2022 Confirming OP's observation. I made inboard track 090T, made JDAM terminal azimuth 090T. Approaching the mark showing the JDAM azimuth on HSI is not displaying a vertical tic mark as it should. The tic mark looks like it's indicating about 120 magnetic which is very different than the entered 090 true. Even a true/magnetic mixup doubled by subtracting instead of adding wouldn't be this big. F18 JDAM HSI impact azimuth mark.trk 1 Link to comment Share on other sites More sharing options...
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