A test .....
Thread Starter
Joined: Apr 2003
Posts: 1,635
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From: Vancouver, BC, Canada
A test .....
... for the fun of it 
- Who designed a helicopter with a solidity ratio greater than 1?
A hint - What type of blade is controlled by a Swishplate?
A hint - Which helicopter builder had a tail-rotor obsession?
A hint - What rotorcraft had a GW of 500 lbs and was powered by a 10,000 hp engine?
A hint - Which company tried to launch a helicopter from a torpedo tube?
A hint
Thread Starter
Joined: Apr 2003
Posts: 1,635
Likes: 1
From: Vancouver, BC, Canada
OPPS! Test question #6
It is extremely important that helicopter pilots be aware of the instrument readings at all times.
However, when concentrating on familiar objects for extended periods, an observer's perception may change, from what he is actually seeing, to what he believes he should be seeing.
This tests your ability to concentrate. It involves looking at a still picture for a short period of time. Does the picture stay the same, or does it change to what you think you should see?
Test picture
However, when concentrating on familiar objects for extended periods, an observer's perception may change, from what he is actually seeing, to what he believes he should be seeing.
This tests your ability to concentrate. It involves looking at a still picture for a short period of time. Does the picture stay the same, or does it change to what you think you should see?
Test picture
Hovering AND talking
Joined: Feb 2003
Posts: 5,711
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From: Propping up bars in the Lands of D H Lawrence and Bishop Bonner
No, I couldn't see any change but I am studying Human Performance and Limitations at the moment so I am aware of this effect.
Cheers
Whirls
PS - shouldn't the answer to number 2 be, more correctly, A Dashing Blade?
Cheers
Whirls
PS - shouldn't the answer to number 2 be, more correctly, A Dashing Blade?
Thread Starter
Joined: Apr 2003
Posts: 1,635
Likes: 1
From: Vancouver, BC, Canada
A little elaboration on the answers.
2. The 'swishplate' is used to control 'gay blades'.
3. Sikorsky's VS-330. It was used;
Then in June 1941 Igor got a little too eager and removed the wrong rotors from the tail.
Dave
3. Sikorsky's VS-330. It was used;
- ~ in May 1940 for his first untethered flight, and
- ~ in May 1941 to beat the world endurance record, held by the Fw 61, by staying aloft for 1 hr. 32 min. 26.1 sec. (*)
Then in June 1941 Igor got a little too eager and removed the wrong rotors from the tail.
Dave
Hovering AND talking
Joined: Feb 2003
Posts: 5,711
Likes: 1
From: Propping up bars in the Lands of D H Lawrence and Bishop Bonner
I'm sorry Dave but I must disagree with you on the answer to No. 2 - it is the Dashing Blade that is controlled by a Swishplate. Please refer to "Blade Control" by Messrs. E. Flynn and S. Granger.
Cheers
Whirls
Cheers
Whirls
Thread Starter
Joined: Apr 2003
Posts: 1,635
Likes: 1
From: Vancouver, BC, Canada
Mia Maximus Culpa
Whirlygig,
A couple of years ago Lu Zuckerman wrote in PPRuNe; "Swishplate will have a totally different meaning in San Francisco."
It is all now very clear. Messrs. Errol Flynn and Stuart Granger published their voluminous half-page dissertation on 'Blade Control' in San Francisco. I just assumed .....
Dave
Whirlygig,
A couple of years ago Lu Zuckerman wrote in PPRuNe; "Swishplate will have a totally different meaning in San Francisco."
It is all now very clear. Messrs. Errol Flynn and Stuart Granger published their voluminous half-page dissertation on 'Blade Control' in San Francisco. I just assumed .....
Dave
Last edited by Dave_Jackson; 23rd July 2005 at 04:28.
