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HomeHomeDiscussionsDiscussionsiFly Wish-ListiFly Wish-ListOption for magenta course line to also show hypothetical glide range  to each sideOption for magenta course line to also show hypothetical glide range to each side
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8/11/2017 6:23 PM
 
No need to get snippy. We don't all agree with every idea put forth here. That doesn't mean it's not a good idea. Using iFly, it's quite easy to input a course from your departure airport to your destination, then drag the course to other locations on the map. They might be other airports or just close to other airports.
 
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8/11/2017 6:44 PM
 

I don't think I was snippy.  I was just pointing out that what you and the other person offered as solutions were in fact not solutions in the least.  So, don't take offense at that.

Here's my bottom line in this and in life in general: something is better than nothing.  Nothing is what we have now.  My suggestion would aid in planning, and the distance ring would aid in an emergency.  Neither one could be relied on to be accurate, but neither could the most accurately calculated course line or distance ring -- they're bound to be wrong at least to some degree, especially since iFly has no way to know for certain what the winds aloft are at this very second at this very altitude or how they're interacting with the terrain.  I'd rather have something that would guide my planning and emergency reactions than a whole lot of accurate nothing.


Powrachute PC 2000; Aventura II; Cherokee 180
 
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8/11/2017 7:26 PM
 
I usually fly direct from departure airport to destination airport unless there is a class B in the way. It's easy to go over class C and D. If I was concerned about an engine out, I would prefer to fly over some intermittent airports as opposed to 9 miles to the side (assumes 9 to 1 glide and flying at 5500 feet). It is REAL easy to drag the course line to several airports along my route of flight and usually the added distance is very small. So, it's not like we currently have nothing. As a matter of fact, if I was a little concerned about the weather, it's a good idea never to get too far from an airport.
 
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8/11/2017 11:47 PM
 

I do some flying like that.  I also fly over the North Cascades where there's no roads -- not even Forest Service roads.  Airports, or even fields under cultivation are far, far apart.  Unless you stay within gliding range of one of 2 highways there's no place to land and they're never going to find you if you do survive.  I can and do drag the course line all over hell & breakfast, but it's just a guess on whether I'm close enough to landable areas.  It all looks close on the screen.  I have no idea whether I can glide 1/8", 1/4", or 1/2".  Depends on the zoom level.  Depends on my altitude.  Depends on which plane I'm flying.

Again, all I'm looking for is an approximation.  The data is all there for the software to do that.  It's an option I'm looking for, that can be turned on and off and I'm not telling you that you need to use it.  I get from your reponses that it wouldn't be helpful to you based on your type of flying.  But that doesn't mean it's not needed or wanted by other people based on their type of flying or how they want to do their planning.  See the initial responses above.  We're all using the software a little differently and we're flying different planes at different altitudes with different glide ratios (e.g. neither of my planes will do 9:1) over different terrain, and we have differing comfort levels with being beyond gliding distance of landable areas.


Powrachute PC 2000; Aventura II; Cherokee 180
 
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8/18/2017 12:06 PM
 

My random thoughts on this idea:  

1) Imagine a scenario where you are flying past a mountain peak - make a 90 degree turn right there and it would be a short glide before ground intercept.  But if you continue on course for a miles or so before turning, maybe you could make it to the other side.  So would you highlight the other side of the mountain?  Or would you highlight based on a simple perpendicular course from the route?  Similar issue if you are climbing...or if your route crosses itself...the highlighted area would be ambiguous.  

2) A customer at Oshkosh was telling he flew straight across Lake Michigan, and he manually calculated based on his altitude & glide radio that there would only be a 10 minute stretch where he couldn't make land.  It occurred to me a feature like this might make that task easy.  Then 10 seconds later it occurred to me that it wouldn't help that guy at all, since the glide distance ahead/behind wouldn't be visualized - just the side to side.  

To accommodate both of these scenarios, perhaps it would be better to visualize the glide distance from any given point along the route.  And perhaps a slider so you could move your point along your plan.   


Walter Boyd
President, Adventure Pilot
 
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HomeHomeDiscussionsDiscussionsiFly Wish-ListiFly Wish-ListOption for magenta course line to also show hypothetical glide range  to each sideOption for magenta course line to also show hypothetical glide range to each side