FredT From United Kingdom, joined Feb 2002, 2184 posts, RR: 26 Reply 4, posted (7 years 6 months 2 weeks 6 days 5 hours ago) and read 5722 times:
A pressure reference in the window line would not be much use. Too many things to disturb the flow. There's a multitude of other reasons to have something poking out into the airstream though.
How about emergency depressurization? On the civilian test flights I've been in contact with, that was done through a special door with a valve. Something about the idea doesn't sound too likely though...
I thought I was doing good trying to avoid those airport hotels... and look at me now.
EMBQA From United States of America, joined Oct 2003, 9286 posts, RR: 13 Reply 5, posted (7 years 6 months 2 weeks 6 days 3 hours ago) and read 5683 times:
The red blanking windows are just were test equipment is set up to take mesurments.
EI747SYDNEY From Ireland, joined Oct 2005, 687 posts, RR: 0 Reply 7, posted (7 years 6 months 2 weeks 5 days 12 hours ago) and read 5512 times:
Definately test equipment. Most of the aircraft is filled with all types of equipment used for pressure, ballast etc. However the specific function of this particular red window. I have no idea.
Rob
''Live life on the edge, Live each and every day like it's your last, Hell you only live once''
In case something goes terribly wrong and you decide it is time for the test crew to take a silk ride, you need to depressurize the aircraft to get the doors open. Special doors with valves is one way I'm familiar with, but there could be other solutions.
I think we have reached the point where we know that we do not know until somone who knows comes along.
I thought I was doing good trying to avoid those airport hotels... and look at me now.
Aloges From Germany, joined Jan 2006, 8357 posts, RR: 47 Reply 11, posted (7 years 6 months 2 weeks 3 days 7 hours ago) and read 4083 times:
I can't remember where on TV I've seen it, but a documentary on the A380 said the emergency exit on that plane was a hatch whose cover needed to be blown away (with some sort of explosive) for the crew to escape. I doubt a crew would be able to open the 1L door during flight without being severely injured; they'd also risk being sucked in by the engines and hitting the wing or tail exiting anywhere but the belly.
Walk together, talk together all ye peoples of the earth. Then, and only then, shall ye have peace.
EMBQA From United States of America, joined Oct 2003, 9286 posts, RR: 13 Reply 12, posted (7 years 6 months 2 weeks 3 days 7 hours ago) and read 4069 times:
There is or was a second thread running on these 'red windows' over the weekend. The picture they choose showed the escape hatch clearly on the A380. It looked like it was built into the cargo door.
"It's not the size of the dog in the fight, but the size of the fight in the dog"
Aloges From Germany, joined Jan 2006, 8357 posts, RR: 47 Reply 14, posted (7 years 6 months 2 weeks 3 days 4 hours ago) and read 4013 times:
Quoting Manzoori (Reply 13): These shots show the crew escape hatch:-
Makes sense to put it there - it must be easier to change the cargo door than some fuselage panels if the escape hatch mechanism attached to it fails big time.
Walk together, talk together all ye peoples of the earth. Then, and only then, shall ye have peace.
Fokker Lover From , joined Dec 1969, posts, RR: Reply 15, posted (7 years 6 months 2 weeks 3 days 3 hours ago) and read 3984 times:
If I remember correctly, when the F28 was was undergoing flight tests, there was a pretty elaborate escape system. Floor beams behind the cockpit were removed. The flight crew was attached to a cable system that would yank them through the floor, and out the FWD cargo door, after it was blown off its hinges.
I guess compared to dying this would be the lesser of two evils, but that would be one hell of a rough ride with some guaranteed injuries.
EMBQA From United States of America, joined Oct 2003, 9286 posts, RR: 13 Reply 17, posted (7 years 6 months 2 weeks 3 days 1 hour ago) and read 3923 times:
Quoting PipoA380 (Reply 16): If anyone knows for sure, better show up!
As has been said above, they are were test equipment has been set up to take measurements. I have personally been on-board the Embraer 190 test aircraft and were each red window was some sort for test or measuring sensor was hooked up to it...... Air pressure, air temperature, laminar air flow etc.....
"It's not the size of the dog in the fight, but the size of the fight in the dog"
FTOHIST From United States of America, joined Mar 2004, 73 posts, RR: 0 Reply 18, posted (7 years 6 months 2 weeks 3 days 1 hour ago) and read 3916 times:
I work as a technician on the GE 747 engine testbed (N747GE), and we have many of those blankoffs. Some of them are used for icing tests, where we stick a probe out through the plate into the airstream and then measure the ice buildup. Other plates on our airplane have TAT probes mounted through them, for extra temperature measurements into our data system that are independent of the aircraft systems. We have quite a few blankoffs that are there for other special purposes should the requirement pop up.
I have also worked on board the ERJ170 test airplanes, and seen roughly the same setup. I would imagine that airframe flight testing uses more varied equipment than we do for powerplant development.
HAWK21M From India, joined Jan 2001, 31201 posts, RR: 58 Reply 19, posted (7 years 6 months 2 weeks 2 days 19 hours ago) and read 3855 times:
Quoting Aloges (Reply 14): Makes sense to put it there - it must be easier to change the cargo door than some fuselage panels if the escape hatch mechanism attached to it fails big time.
GrandTheftAero From United States of America, joined Nov 2003, 254 posts, RR: 5 Reply 20, posted (7 years 6 months 2 weeks 2 days 7 hours ago) and read 3795 times:
This summer I was based of out Boeing Field as a flight test participant on WD001, the 772LR pictured above. That particular blank-off has an OAT sensor mounted in it (IIRC). The other side of the plane has a blank-off with both a pitot tube and an OAT sensor in it.
Someone please correct me if I've gotten them mixed up.
I'm afraid not; I haven't been able to find any online (tought I didn't check airbus.com) and I can't remember what TV channel I saw that on. Basically it looked like a red tube that the crew would jump into to leave the aircraft; of course after blowing the hatch off.
Walk together, talk together all ye peoples of the earth. Then, and only then, shall ye have peace.
Fokker Lover From , joined Dec 1969, posts, RR: Reply 22, posted (7 years 6 months 2 weeks 2 days 2 hours ago) and read 3738 times:
Aloges
This might help your search.
Crew Escape System Development
Due to the configuration of the airplane, there was little likelihood
that any manual bailout scheme would be successful
Early in 1979, began searching for something better
As luck would have it, Stanley Aviation and Stencel had developed
such a system for Airbus
Extensive system and physiological testing had been.....
This is where I found that.
PPT] PowerPoint PresentationFile Format: Microsoft Powerpoint 97 - View as HTML
Flight Test jobs. Calspan Simulations. Crew escape system development. Spin chute system development. Calspan Simulations ... www.flighttestsafety.org/ workshops/FTSC03/learfan/learfan.pps - Similar pages
25 Aloges: You need to remove the space between ".org/" and "work". There are some videos that PPS file links to, but the links seem to be broken.
26 Starlionblue: Also, moving the L1 door at altitude and/or if there is any kind of maneovring is probably impossible.
27 FredT: But what if you have an African swallow, a European swallow, a string, a purpose built door to replace the plug door and a coconut? Notice how I cleve
28 HAWK21M: The File opens but some Video links don't. Thanks Anyway. regds MEL
29 JHSfan: Try to open this URL. It leads to a directory with the PPS file and some videos. Links does not work because the video links in the PPS file contains
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If anyone knows for sure, better show up! 
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