Cameron Lynch Posted October 22, 2019 Share Posted October 22, 2019 Having a hard time finding anything definitive. When the aircraft is parked, cold and dark...what is the exhaust nozzle position? Most photos look like they're closed, but there are also a few that don't. TIA Cameron Quote Link to post Share on other sites
Jonathan_Lotton Posted October 22, 2019 Share Posted October 22, 2019 More or less closed Quote Link to post Share on other sites
AndrewPerren Posted October 23, 2019 Share Posted October 23, 2019 Closed. Quote Link to post Share on other sites
Emvar Posted October 23, 2019 Share Posted October 23, 2019 Not definitive..... I've seen one open one closed.... both closed or open.... I think its just something to do with hydraulics and the shut down. You really can't go wrong. Quote Link to post Share on other sites
Dave Roof Posted October 23, 2019 Share Posted October 23, 2019 Sorry Emvar, but very much definitive as they are almost always closed. If you see one open, it is an exception and happens very rarely. Quote Link to post Share on other sites
Emvar Posted October 23, 2019 Share Posted October 23, 2019 Dave, I don't doubt it as my experience has always been at airshows. Operationally you can give a more definitive answer. Emil Quote Link to post Share on other sites
Alternative 4 Posted October 24, 2019 Share Posted October 24, 2019 99% of the RAAF examples I have seen over the years are closed. Quote Link to post Share on other sites
rightwinger26 Posted October 25, 2019 Share Posted October 25, 2019 The VEN on the 400 and 402 is driven with oil. When the engine shuts down, the system depressurizes, and the ven actuators draw back in and close the nozzle. Usually when they stay open, there is either air in the system, something bound and got jammed, or someone did maintenance and didn’t close it when they finished which isn’t a big deal. When the motor cranks on the next start, the vpu while drive it closed, then it will reschedule. Quote Link to post Share on other sites
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