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-   -   WIPERs (https://www.pprune.org/tech-log/586645-wipers.html)

oceancrosser 12th Nov 2016 18:35


Mazda did that with the rear window wiper on my RX-7 30 years ago to reduce noise and drag.
I'm somewhat surprised it's taken the aircraft manufactures this long to catch up
No matter how cheap a car you buy, the wipers are far better than on any airliner I have flown. 757/767 wipers. Crap. And lots of times they will not stop when switched off.

JammedStab 12th Nov 2016 20:09

The first aircraft I flew that had pretty good wipers was the 747-400. At leaast that was my experience. The 777 seems pretty good as well and someone decided to give us a nice intermittent mode. All the truboprops and old Boeings were crap.

Amadis of Gaul 13th Nov 2016 00:47

In my experience (CRJ, E170/175, A320) they produce more noise than benefit.

stilton 13th Nov 2016 04:14

Didn't the CV880 /990 use bleed air for rain removal ?


I imagine that was noisy but effective.

Capn Bloggs 13th Nov 2016 06:20

That squirty stuff in the 146 ran rings around the wipers.


I must admit the Saab has good wiper blades except the speed choices.. off, super fast or having a seizure bat**** crazy fast.
Same here on my non-SAAB! :{

Capt Fathom 13th Nov 2016 10:00

Never flown any aeroplane where the Wipers actually worked! From GA to multi-million dollar aeroplanes! Just sayin!

oceancrosser 13th Nov 2016 12:32


Didn't the CV880 /990 use bleed air for rain removal ?

I imagine that was noisy but effective.
DC-8s did have bleed (from the compressors in the nose) for rain removal. Fairly effective, but noisy as hell.

Uplinker 13th Nov 2016 16:36

The bloke who designed the wipers for the Dash 8 Q400 must have been told at 1658 on Friday "bugger, we forgot the wipers. Quick design something".

:-)

plhought 16th Nov 2016 04:11

The Q400 wipers are identical to the 'Classic' Dash.

Our outfit they usually try and stop the wipers when they are kind of vertical. Reduces noise considerably.

Still look like they are having a seizure when they are operating

FixClrEnt 16th Nov 2016 07:43

Many aircraft don't even have wipers. I know that some use a rain-dispersant coating on the 'glazing', so if that works why go to the trouble of fitting wipers in the first place?


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