Mats From United States of America, joined Jul 2003, 585 posts, RR: 1 Posted (7 years 2 months 2 weeks 1 day 19 hours ago) and read 1750 times:
It is my understanding that the doors on large transport aircraft are plugs--bigger than the opening in the fuselage. For example, the 767 and DC-10 doors are bigger than the openings in the fuselage, so they opens inward and up into the ceiling. An A320 door pops out of the fuselage and slides away.
But I'm confused about the 727 and 737 doors. They open in to the cabin and then somehow pop out. How does this work? Can anyone explain why they are designed this way? I know that therer's no room to put the door in the ceiling, but couldn't the door just pop out of the fuselage and slide away?
Do the 747, 757, and 777 have this same design: in, then out, then flip around?
Miamiair From , joined Dec 1969, posts, RR: Reply 1, posted (7 years 2 months 2 weeks 1 day 19 hours ago) and read 1740 times:
707 has the same door BTW.
When the handle is turned, there are gates at the top and bottom that pivot inwards, the fwd end of the door cants inwards and the aft end outwards. At this point the door is pushed open and it will swing forward and it is held there by a lock on one of the hinge arms. Closing is the reverse. When the door is closed, it locked into place via cams and stops.
United1 From United States of America, joined Oct 2003, 5337 posts, RR: 8 Reply 2, posted (7 years 2 months 2 weeks 1 day 18 hours ago) and read 1722 times:
Quoting Mats (Thread starter): Do the 747, 757, and 777 have this same design: in, then out, then flip around?
The 757 has the same type of door as the 707/727/737. The 777 door is like the A320 it pushes straight out and slides toward the front of the aircraft. I'm actually not sure about the 747 door. I know it swings outward, but I'm not sure if it rotates like the 737s does. It is a significantly wider door.