Harry_the_Spider Posted September 22, 2022 Share Posted September 22, 2022 Under what circumstances would a Tomcat have one nozzle flared and the other closed, and which way round should it be? Link to comment Share on other sites More sharing options...
Giorgio N Posted September 22, 2022 Share Posted September 22, 2022 On the F-14A the two nozzles were one open and one closed any time the aircraft was parked. This was due to the engine shut-down procedure and generally resulted in the left nozzle closed while the right remained open. This was the most common but there are pictures showing the opposite. In the B and D variant generally the aircraft are parked with both nozzles open but it's possibile to see pictures showing one nozzle open and the other closed 1 3 Link to comment Share on other sites More sharing options...
Hook Posted September 22, 2022 Share Posted September 22, 2022 Some more pointers over at MATS. Cheers, Andre Link to comment Share on other sites More sharing options...
Lusitanian Posted September 23, 2022 Share Posted September 23, 2022 (edited) 11 hours ago, Giorgio N said: On the F-14A the two nozzles were one open and one closed any time the aircraft was parked. This was due to the engine shut-down procedure and generally resulted in the left nozzle closed while the right remained open. This was the most common but there are pictures showing the opposite. In the B and D variant generally the aircraft are parked with both nozzles open but it's possibile to see pictures showing one nozzle open and the other closed Not in every instance. It seems that in early F-14A operations in the 1970s, both nozzles could frequently be seen equally ‘open’. Edited September 23, 2022 by Lusitanian Link to comment Share on other sites More sharing options...
scotthldr Posted September 23, 2022 Share Posted September 23, 2022 It might be my eye sight but in the above photo the left hand exhaust petals appear to be at a different angle than the right exhaust. Link to comment Share on other sites More sharing options...
Pappy Posted September 23, 2022 Share Posted September 23, 2022 G'day Harry, The explanation in the linked MATS article provided by Hook is an excellent explanation as to why the common situation for TF-30 engined (F-14A) jets have the open closed config on shut-down, it is a big explanation but very worthwhile reading. Later engined F-14s still had the same shut down process but when shut down and hyd pressure was removed, these defaulted to both VENs open. As with most things there were exceptions and you can go and try to find evidence to the contrary but this was the typical practice. cheers, Pappy Link to comment Share on other sites More sharing options...
JagRigger Posted September 25, 2022 Share Posted September 25, 2022 Remember thinking it looked odd when we had a pair at Abingdon ( same year the S-3 went off-road ) Link to comment Share on other sites More sharing options...
Lusitanian Posted September 29, 2022 Share Posted September 29, 2022 On 9/23/2022 at 12:01 AM, scotthldr said: It might be my eye sight but in the above photo the left hand exhaust petals appear to be at a different angle than the right exhaust. Very slightly, yes. But models tend to be supplied with either fully ‘open’ or fully ‘close’ nozzles. Best wishes! Link to comment Share on other sites More sharing options...
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