Safe Clearance from Surface Exhaust Plumes
Safe Flight in Vicinity of Surface Exhaust Plumes
Exhaust plumes of high temperature and oxygen depleted gas from surface mounted gas turbines may present a hazard to aircraft in close vicinity.
Gas turbine powered naval ships with attendant helicopters may need a significant avoidance zone around the ship's exhaust plume.
Then there are many land based gas turbines being installed vertically to power electricity generators to satisfy peak electricity loads.
What is a safe clearance for flight in the vicinity of these exhaust plumes?
Has there been any flight testing? If so are there any advisories available?