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Bad hair day...

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Bad hair day...

Postby RogerS » 21 Apr 2021, 16:55

While watching a Chris Pye video, this one caught my eye.



Full marks to him for 'fessing up.
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Re: Bad hair day...

Postby TrimTheKing » 28 Jun 2021, 10:20

Wow, my backside was twitching just watching it. Can't imagine how scary it is to lose visibility like that when piloting, then to have that alarm go off! :shock:
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Re: Bad hair day...

Postby Chippyjoe » 28 Jun 2021, 21:16

Wowzer, first job change his underpants. :shock:
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Re: Bad hair day...

Postby 9fingers » 28 Jun 2021, 22:08

I'd have expected a pitot tube heater to be automatic when temperature gets near freezing point?
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Re: Bad hair day...

Postby RogerM » 29 Jun 2021, 14:32

9fingers wrote:I'd have expected a pitot tube heater to be automatic when temperature gets near freezing point?
Bob


As I recall, the current draw on the pitot heater is very significant, and its use is as much dependent on humidity as temperature. Most of the time, even in sub zero temperatures, pitot icing is not a problem provided that the air is dry. The main problem is in cloud in temperatures just below freezing when supercooled water droplets can freeze to the pitot tube on impact. For most of the time pitot heat is not required and especially on a light aircraft a permanent current draw would be unacceptable. It is often the highest single consumer of current on the aircraft. You always switch them off immediately after landing as at low airspeeds they get extremely hot and would melt the pitot cover that is put on the aircraft when it is parked.
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Re: Bad hair day...

Postby 9fingers » 29 Jun 2021, 14:36

RogerM wrote:
9fingers wrote:I'd have expected a pitot tube heater to be automatic when temperature gets near freezing point?
Bob


As I recall, the current draw on the pitot heater is very significant, and its use is as much dependent on humidity as temperature. Most of the time, even in sub zero temperatures, pitot icing is not a problem provided that the air is dry. The main problem is in cloud in temperatures just below freezing when supercooled water droplets can freeze to the pitot tube on impact. For most of the time pitot heat is not required and especially on a light aircraft a permanent current draw would be unacceptable. It is often the highest single consumer of current on the aircraft. You always switch them off immediately after landing as at low airspeeds they get extremely hot and would melt the pitot cover that is put on the aircraft when it is parked.


Ah that explains it. Not being an aviator, I'd assumed incorrectly that these things were simple!

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Email:motors@minchin.org.uk
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Re: Bad hair day...

Postby RogerS » 29 Jun 2021, 15:00

9fingers wrote:
RogerM wrote:
9fingers wrote:I'd have expected a pitot tube heater to be automatic when temperature gets near freezing point?
Bob


As I recall, the current draw on the pitot heater is very significant, and its use is as much dependent on humidity as temperature. Most of the time, even in sub zero temperatures, pitot icing is not a problem provided that the air is dry. The main problem is in cloud in temperatures just below freezing when supercooled water droplets can freeze to the pitot tube on impact. For most of the time pitot heat is not required and especially on a light aircraft a permanent current draw would be unacceptable. It is often the highest single consumer of current on the aircraft. You always switch them off immediately after landing as at low airspeeds they get extremely hot and would melt the pitot cover that is put on the aircraft when it is parked.


Ah that explains it. Not being an aviator, I'd assumed incorrectly that these things were simple!

Bob


Nothing in flying is ever 'simple', Bob. :D
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Re: Bad hair day...

Postby Just4fun » 30 Jun 2021, 06:11

RogerS wrote:Nothing in flying is ever 'simple', Bob. :D

It seems to me that even the simple things aren't simple, even things which you might assume anybody could do. Any dreams I may have had of flying a plane disappeared when I realised I cannot even listen to the radio.

18 Months ago I worked with a French guy who had his own small plane. He was preparing for some test that he has to take periodically to retain his pilot licence. In part this involved listening to and interpreting air traffic control radio calls. He played me some samples of these, which were of course in English as all ATC comms are. I could not make out what was being said so how he, as a non-native speaker of the language, derived meaning from a cacophony of squelch and squeal truly baffled me.
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Re: Bad hair day...

Postby RogerS » 30 Jun 2021, 09:05

Just4fun wrote:
RogerS wrote:Nothing in flying is ever 'simple', Bob. :D

It seems to me that even the simple things aren't simple, even things which you might assume anybody could do. Any dreams I may have had of flying a plane disappeared when I realised I cannot even listen to the radio.

......


Fly a glider. No radio needed. Proper flying.....none of this 'driving' in 3 dimensions :lol:
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