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MD-11 Wiper Question  
User currently offlineFghtngsiouxatc From United States of America, joined Mar 2009, 216 posts, RR: 0
Posted (5 years 5 months 1 day 18 hours ago) and read 4539 times:

I was browsing some of AAs old MD-11 pictures, and found this one. I noticed the windshield wipers were stowed at the bottom of the windscreen like most other airliners.


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Photo © Christopher Smay



On all other pictures of MD-11s, the wipers home position is in between the two main windshield panels.


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Photo © Juan Rodriguez - Iberian Spotters



I know it's an odd question, but was there a change from the old MD-11s to the new one? I ask because I wonder if there were any other small changes like this to newer models.

7 replies: All unread, jump to last
 
User currently offlineWILCO737 From Greenland, joined Jun 2004, 9004 posts, RR: 76
Reply 1, posted (5 years 5 months 1 day 18 hours ago) and read 4524 times:
AIRLINERS.NET CREW
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Quoting Fghtngsiouxatc (Thread starter):
I know it's an odd question, but was there a change from the old MD-11s to the new one? I ask because I wonder if there were any other small changes like this to newer models.

Yes, it is quiter when the are upwards between the two windows. Les drag as well  Wink A minor change with great effect.

wilco737



It it's not Boeing, I am not going.
User currently offlineKappel From Suriname, joined Jul 2005, 3533 posts, RR: 17
Reply 2, posted (5 years 5 months 1 day 16 hours ago) and read 4478 times:



Quoting WILCO737 (Reply 1):
Yes, it is quiter when the are upwards between the two windows. Les drag as well Wink A minor change with great effect.

Wasn't this part of the PIP when the MD11 failed to meet it's initial targets?



L1011,733,734,73G,738,743,744,752,763,772,77W,DC855,DC863,DC930,DC950,MD11,MD88,306,319,320,321,343,346,ARJ85,CR7,E195
User currently offlineWILCO737 From Greenland, joined Jun 2004, 9004 posts, RR: 76
Reply 3, posted (5 years 5 months 1 day 14 hours ago) and read 4424 times:
AIRLINERS.NET CREW
HEAD MODERATOR



Quoting Kappel (Reply 2):
Wasn't this part of the PIP when the MD11 failed to meet it's initial targets?

I was told it was due to the noise and the additional drag.

wilco737



It it's not Boeing, I am not going.
User currently online113312 From United States of America, joined Apr 2005, 571 posts, RR: 1
Reply 4, posted (5 years 5 months 13 hours ago) and read 4157 times:

You should be aware that the change in wiper parked position is one of the changes incorporated into the MD-10 modification.

User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 5, posted (5 years 5 months 7 hours ago) and read 4037 times:

What caused the MD-10 to require this mod when most other Types continue to use the horizontal park position.
Is noise the only reason?
regds
MEL.



Think of the brighter side!
User currently offlineCosmicCruiser From United States of America, joined Feb 2005, 2255 posts, RR: 15
Reply 6, posted (5 years 5 months 5 hours ago) and read 3998 times:

The MD-10 has a number of "inprovements" that the -11 doesn;t have.

User currently offlineAA737-823 From United States of America, joined Mar 2000, 5779 posts, RR: 11
Reply 7, posted (5 years 4 months 3 weeks 4 days 5 hours ago) and read 3538 times:

The MD-11 underwent a great number of tweaks throughout it's life cycle, and by that I'm referring to the period that the aircraft was actually available for order.
The original birds fell so short of range and economy targets that Douglas had to spend all remaining money (which wasn't a lot) trying to eke out what they could.
Vertical wipers are more aerodynamic than horizontal ones- see the ERJ family. I suspect we will see more of this design in the future, now that every bit counts.


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