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N415XJ
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C-17 Lower Cockpit Windows: Purpose?

Thu Dec 03, 2015 3:51 pm

What's the purpose of these small lower windows on the C-17? I only ever recall seeing these types of floor-level windows on helicopters (which, I assume, allow the pilot to judge the landing better). Why aren't these small windows found on other aircraft (besides for the C-130, for which the same question applies).
http://i.imgur.com/mfcRS2z.jpg
 
Sooner787
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RE: C-17 Lower Cockpit Windows: Purpose?

Thu Dec 03, 2015 6:38 pm

I imagine so they can see the ground crew better pre-post flight.

I also remember the pilots have a rear view mirror on the flight deck

that looks thru a window into the cargo compartment. I thought that

was very cool 1st time I saw that at an airshow
 
diverted
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RE: C-17 Lower Cockpit Windows: Purpose?

Thu Dec 03, 2015 8:52 pm

I don't know why they have those windows unfortunately, but it's only the military Hercs that have those windows AFAIK. The civilian ones don't And even then, they seem to have different variations of the windows, with some having one, others having two.

http://cdn-www.airliners.net/aviation-photos/photos/3/0/6/2248603.jpg
http://cdn-www.airliners.net/aviation-photos/photos/1/0/0/2730001.jpg
http://cdn-www.airliners.net/aviation-photos/photos/1/1/4/1231411.jpg
 
AIRWALK
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RE: C-17 Lower Cockpit Windows: Purpose?

Thu Dec 03, 2015 9:22 pm

I think it was to do with better visibility for short field landings
I'm sure this thread will take off soon
 
yeelep
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RE: C-17 Lower Cockpit Windows: Purpose?

Thu Dec 03, 2015 9:50 pm

From Lockheed Martin, Code One online magazine:

"The LM-100J looks much like its military C-130J Super Hercules counterpart. The main exterior difference is the lack of lower windows under the windscreen, which allow the C-130J pilots to look ahead and down to see drop zones."
 
thegman
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RE: C-17 Lower Cockpit Windows: Purpose?

Thu Dec 03, 2015 10:48 pm

Quoting Sooner787 (Reply 1):
I also remember the pilots have a rear view mirror on the flight deck

that looks thru a window into the cargo compartment. I thought that

was very cool 1st time I saw that at an airshow

I don't think they have mirrors anymore, but the bubble window is still there.

The windows are good for judging aircraft position while making a star turn (think 3 point turn, except you might need more points depending on width.) McDonnell-Douglas says the C-17 can turn around in as little as 80 ft wide runway/taxiway. You use the kickout windows, as they are called, to help judge where the nose wheel is (you want it as close as possible to the end of the paved surface).

Current armor that is installed in all the jets that are not at Altus AFB makes it a bit harder to use these.
 
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JBo
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RE: C-17 Lower Cockpit Windows: Purpose?

Wed Dec 23, 2015 4:09 am

Better visibility when you need to actually look out the window for things, especially for shortfield performance, visual approaches, etc.
I'd take the awe of understanding over the awe of ignorance any day.
 
thegman
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RE: C-17 Lower Cockpit Windows: Purpose?

Tue Dec 29, 2015 6:04 pm

Quoting JBo (Reply 6):

Better visibility when you need to actually look out the window for things, especially for shortfield performance, visual approaches, etc.

The US C17s all have armor installed that pretty much makes the windows useless. I don't know anyone who actually uses them.

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