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Aircraft questions

 
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con spirito
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Joined: 07 Apr 2007
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PostPosted: Sat Jan 12, 2008 7:45 pm    Post subject: Aircraft questions Reply with quote

Hi everyone. Can someeone tell me the answers of the following:
1. Why is the centre of an aircraft engine painted white (swirl)?
2. How does a single engine fuselage mounted aircraft overcome torque reaction (helicopter theory)?
I would be thankful if someone tells me.
Regards
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HAWK21M
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Location: Mumbai, INDIA

PostPosted: Sun Jan 13, 2008 12:29 am    Post subject: Reply with quote

1.The Spiral on the Fan Spinner is an Indication to Ground personnell that the Fan is rotating.

2.Most Single engined Aircraft have their Tail Fin deflected to counter rotation.

regds
MEL
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con spirito
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PostPosted: Sun Jan 13, 2008 4:56 pm    Post subject: Reply with quote

Oh thanks buddy,

One of my freinds told me it is also painted that way to distract the birds coming in the way while flying.
Is it true?
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nikhilsc
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Joined: 01 Jan 2007
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PostPosted: Sun Jan 13, 2008 7:43 pm    Post subject: Reply with quote

jake wrote:
Oh thanks buddy,

One of my freinds told me it is also painted that way to distract the birds coming in the way while flying.
Is it true?


well if that were true, then you wouldn't have things like this happening!

http://www.flightlevel350.com/Aircraft_Boeing_757-200-Airline_Thomsonfly_Aviation_Video-8457.html

nopes. not to distract birds. Smile
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sammyk
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Joined: 20 Dec 2006
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Location: Austin, TX

PostPosted: Sun Jan 13, 2008 11:38 pm    Post subject: Reply with quote

I've heard the thing about birds too as well as what Mel said. Just because it still happened doesn't mean it's not for that reason. Nothing is 100%.
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stealthpilot
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Joined: 19 Dec 2006
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PostPosted: Mon Jan 14, 2008 12:29 am    Post subject: Reply with quote

jake wrote:

One of my freinds told me it is also painted that way to distract the birds coming in the way while flying.
Is it true?

If the aircraft is flying I would think the blades turn fast enough to make the white swirls invisible so I doubt that, unless the bird can see 100 frames per second
(or can they?)
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HAWK21M
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PostPosted: Mon Jan 14, 2008 12:13 pm    Post subject: Reply with quote

jake wrote:
Oh thanks buddy,

One of my freinds told me it is also painted that way to distract the birds coming in the way while flying.
Is it true?


Can be true to an Extent,but not the Primary reason.

regds
MEL
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con spirito
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PostPosted: Sun Jan 27, 2008 9:51 pm    Post subject: Reply with quote

I have some more doubts. Actually i knew the answers earlier but i dont remember them as of now.
1. Why does the chord of a propeller decreases in width towards tip and why is it twisted?
2. What is the advantage of a gull wing?

Suggestions and questions are welcome in this thread.
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nikhilsc
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PostPosted: Sat Feb 16, 2008 11:20 am    Post subject: Reply with quote

jake wrote:
I have some more doubts. Actually i knew the answers earlier but i dont remember them as of now.
1. Why does the chord of a propeller decreases in width towards tip and why is it twisted?
2. What is the advantage of a gull wing?

Suggestions and questions are welcome in this thread.


the relative wind speed increases as we move from the hub to the tip, hence the force prodced at the tip would be greater than at the hub ... hence a wash out is given to have even force distribution ...
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