Posts: 479
Joined: Fri Feb 24, 2006 3:18 am

What Is This Flap On The DC10 For?

Sat Jul 28, 2007 8:52 am

Can someone explain what this flap/door is for on the DC10.

You can see it on the following photo just under the windows directly below the letters N & T of International.

I have just seen an interesting video where this flap is open as the aircraft powers up for take off and it then, as the aircraft begins to accelerate, it closes. Is this automatic, was it forgotton or do you suggest it was closed manually by the crew at that time?
There isnt really a dark side to the moon, as a matter of fact its all dark!
Posts: 4510
Joined: Mon Oct 10, 2005 12:27 pm

RE: What Is This Flap On The DC10 For?

Sat Jul 28, 2007 8:58 am

It's the forward outflow valve.
Posts: 1099
Joined: Tue Jan 01, 2002 5:38 am

RE: What Is This Flap On The DC10 For?

Sat Jul 28, 2007 9:55 am

It's automatic.
From the time the aircraft starts its takeoff run, until it passes through 5000 ft, the pressurization controller maintains the aircraft cabin at the field elevation.
That's in case they have to return to the runway.
Keeps ears from popping and limits undue stress on a number of components that are vented to the outside air.
That is, of course, if the engineer is using the automatic mode of the pressurization controller.

One may educate the ignorance from the unknowing but stupid is forever. Boswell; ca: 1533

Who is online

Users browsing this forum: No registered users and 1 guest

Popular Searches On

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos