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Forum: Tech Log

7th Jul 2017, 22:03

Replies: 21

Angle of attack indicator

Views: 9,382

Posted By gundernak

https://www.google.hu/url?sa=t&rct=j&q=&esrc=s&sou...

https://www.google.hu/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwjpqLrdlfjUAhXFxRQKHXdfDGQQFgglMAA&url=http%3A%2F%2Fwww.nar-associates.com%2Ftechnical-flying%2Fangle_of_attack%2Fabsolute_wide...

Forum: Tech Log

6th Jul 2017, 09:32

Replies: 21

Angle of attack indicator

Views: 9,382

Posted By gundernak

PEI_3721...

PEI_3721 (http://www.pprune.org/members/136812-pei_3721)
The pressure differential AOA measurement is very simple: as the AOA changes the pressures change as well. At low AOA mainly the pitot hole...

Forum: Tech Log

5th Jul 2017, 08:26

Replies: 21

Angle of attack indicator

Views: 9,382

Posted By gundernak

The quotations are from manuals of AOA...

The quotations are from manuals of AOA instruments operating by measuring pressure differences when AOA changes with a probe located on the lower surface of the wing. Similar to a Pitot-tube (two...

Forum: Tech Log

4th Jul 2017, 20:55

Replies: 21

Angle of attack indicator

Views: 9,382

Posted By gundernak

Well.... I did a lot of research on the...

Well....

I did a lot of research on the subject and my statements above are wrong! So this post is not solved unfortunatelly.

So please can you please explain the following contradiction (point...

Forum: Tech Log

27th Jun 2017, 14:15

Replies: 21

Angle of attack indicator

Views: 9,382

Posted By gundernak

OK, I will highlight more upwash, (but I know it...

OK, I will highlight more upwash, (but I know it is weird to you but, somehow in European flight theory does not mention upwash, but mainly downwash. Because eventually upwash and downwash belong...

Forum: Tech Log

27th Jun 2017, 13:33

Replies: 21

Angle of attack indicator

Views: 9,382

Posted By gundernak

Dear Sirs! thank you very much the useful...

Dear Sirs!

thank you very much the useful explanations.

So we are talking about DOWNWASH (and upwash also offcourse) and INDUCED AOA, which generates thise phenomenon.

May I ask you to give...

Forum: Tech Log

23rd Jun 2017, 09:05

Replies: 21

Angle of attack indicator

Views: 9,382

Posted By gundernak

Thank you the explanation. @Owain Glyndwr ...

Thank you the explanation.

@Owain Glyndwr
But sorry I do not get it completely. OK, we have a bigger upwash with flaps, but we have a lower pitch also when stalling with flaps. Am I right that...

Forum: Tech Log

22nd Jun 2017, 23:54

Replies: 21

Angle of attack indicator

Views: 9,382

Posted By gundernak

Angle of attack indicator

Hi All,

can you please help me with the following theoretical problem?

I am trying to write a material about AOA indicators and stuck with a contradiction. It is about what will display an AOA...

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