I am trying to get a handle on what a KC-135 pilot would experience (out sample flights are about 0.5-0.7 mach). What I will probably do, for now, is set the visibility for 50 statute miles, since more than that gives me the next step down in performance. Right now, I have been flying without the fog (mainly because I like observing the terrain). Eventually, I will probably see if I can control the fog level independently from the visibility, since I prefer a lighter, more hazie(?), fog.
Jonathan Polley On Sunday, February 3, 2002, at 05:29 PM, Alex Perry wrote: >> So, what you are saying is that my having set the visibility to 90 >> statute miles was not a good thing? ;) Any ideas as to what I should >> expect for a worst-case visibility? The reason I chose such a large >> visibility is because the fog effect looked, to me, more like fog and >> less like haze. > > The numbers I quoted were based on what I get in beautiful and sunny > San Diego; I suspect the Bay Area (with out default airport) is often > worse. > Worst I've seen is 100ft in ground fog while taxiing which was really > hard, > but the worst you'll legally encounter in the USA is one statute mile > while > in class G airspace. Generally below 1200 ftagl; check a chart for > details. > > Bear in mind that, even in a C172, you're moving twice as fast as a car. > Thus, visibility numbers need to be halved to scale for straight line > time. > Turning radius is about quadruple a car, so for maneuvering you need to > quarter the visibility to get comparable effects. Finally, for > navigation, > a car generally rarely looks more than a mile ahead for the next > roadsign, > while the visual aircraft is looking between 2 and 10 miles to a > feature. > There are _good_ reasons why so many student pilots get lost on > X-countrys. > > Flying at 160 mph in 4 mile visibility by pilotage and without ATC > support > is a high stress navigation challenge and is dangerous around mountains. > > _______________________________________________ > Flightgear-devel mailing list > [EMAIL PROTECTED] > http://mail.flightgear.org/mailman/listinfo/flightgear-devel _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
