Cockpit's "Windshield"?

BoeingDrew

Well-Known Member
Cockpit\'s \"Windshield\"?

A thought occured to me today, does the "windshield" (What do you call it?) of an aircraft fog up? You know, like when you get into your car during a cold morning and it fogs up. Does this same effect occur in aircaft? What features does the airplane have to counter-act this? Thanks in advance for any help!


Happy Holidays!!
 

Derg

New Arizona, Il Duce/Warlord
Staff member
Re: Cockpit\'s \"Windshield\"?

Yup!

We have an ANTIFOG switch in the cockpit which heats the inner pane of the windscreen.
 

Tired

New Member
Re: Cockpit\'s \"Windshield\"?

Most aircraft have a pretty effective method of dealing with fog. In the Learjet bleed air (very hot) is directed over the windshield to defog it, in many other jets the panes are electrically heated. In many aircraft the windshield heat is on all the time in flight. If the windshield gets too cold it could shatter due to a bird strike, however, when heated the pane is more flexible and hopefully will absorb the impact.
 

E_Dawg

Moderator
Re: Cockpit\'s \"Windshield\"?

Smaller planes come equipped with a giant fan in front of the cockpit that blows the condensation off.
 

BobDDuck

Island Bus Driver
Re: Cockpit\'s \"Windshield\"?

I've been told that sometimes the first officer's jacket is used to clear off the fog on the inside of the windshield. And the stuff I am looking foward to...

Ethan
 

N519AT

Ahh! This is how I change this!
Re: Cockpit\'s \"Windshield\"?

Doug, Is it also true on some planes that there is something called a "dead dog switch" that heats the cargo hold?
 

PeanuckleCRJ

Poodle Wrangler
Re: Cockpit\'s \"Windshield\"?

We have cargo air conditioning... and in the event things get too hot and start smoking, then we activate the "puppy snuffer"...cargo firex



The CRJ's windshields are electrically heated..we put them into the low position in the before start checklist.
 

Tired

New Member
Re: Cockpit\'s \"Windshield\"?

[ QUOTE ]
Smaller planes come equipped with a giant fan in front of the cockpit that blows the condensation off.

[/ QUOTE ]

The worst plane I ever flew, in respect to windows fogging up was the Seminole. I used to spend the first 5-10 minutes in the aircraft with one engine at idle with the Janatrol running in an attempt to clear the windows.
 

Derg

New Arizona, Il Duce/Warlord
Staff member
Re: Cockpit\'s \"Windshield\"?

[ QUOTE ]
Doug, Is it also true on some planes that there is something called a "dead dog switch" that heats the cargo hold?

[/ QUOTE ]

Not on any aircraft that I flew.

On the 727 and MD-88, as far as I know, certain cargo bins are heated whenever the air conditioners are on.
 

IrishSheepdog

Sitting in the median
Re: Cockpit\'s \"Windshield\"?

We have electrically heated windshields, both front and side. The side are only heated on the front 2/3 of the shield, however. One day in September we pulled into the gate early in the morning, and due to the humidity the windshields fogged up to where they were nearly opaque. We just flicked on the heats, and within a minute they were clear again. In the Saab, we don't use window heat unless necessary for anti-icing purposes.
 
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