Copy of article in May/June 1970 copy of PF

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Richard Mole
Posts: 213
Joined: Wed Jan 02, 2008 7:06 pm
Location: East Midlands

Copy of article in May/June 1970 copy of PF

Post by Richard Mole » Tue Sep 27, 2016 12:18 pm

I have a file note that

'May/June 1970 issue of Popular Flying reported tests on a Jodel D9 fitted with a trailing static where it was found that the ASI under-read by 12 knots at the stall at a true 35 knots, with the position error of the pitot reducing to zero at 100 knots. '

But I have lost my original copy of the May/June 1970 PF.

I would be very glad indeed to obtain a copy of the article if anyone could make it for me.

Thanks in anticipation

Richard
Richard

Ian Melville
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Re: Copy of article in May/June 1970 copy of PF

Post by Ian Melville » Tue Sep 27, 2016 6:51 pm

Sorry, 1970 predates my stack
Ian Melville
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Bill McCarthy
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Re: Copy of article in May/June 1970 copy of PF

Post by Bill McCarthy » Wed Sep 28, 2016 9:49 am

I have a copy of the July/August 1977 beside me, in which, the flight test report by Air Commodore Paul states that - "...........the aircraft continued to fly quite happily, until at 22 knots indicated (yes 22 knots) the nose dropped..............the position error at this angle of attack being 17 knots"
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Richard Mole
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Joined: Wed Jan 02, 2008 7:06 pm
Location: East Midlands

Re: Copy of article in May/June 1970 copy of PF

Post by Richard Mole » Wed Sep 28, 2016 10:22 pm

Bill, thanks for that but I already have the Air Commodore Paul flight test report.

From memory, the May/June 1970 PF article has a graph showing the error in ASI across the speed range.

I am not so much interested in the stalling speed per se but rather more interested in the calibration method using a trailing static.
Richard

Frank Parker
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Re: Copy of article in May/June 1970 copy of PF

Post by Frank Parker » Fri Sep 30, 2016 12:28 am

The article is by Derek Piggot. A second instrument was mounted and connected to the static on a trailing bomb which was towed behind and below the aircraft in undisturbed air flow.
If you want a copy of the article I can scan and send.
Frank Parker
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Richard Mole
Posts: 213
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Location: East Midlands

Re: Copy of article in May/June 1970 copy of PF

Post by Richard Mole » Fri Sep 30, 2016 8:47 am

Frank, that's the article I'm sure of it.
A copy would be much appreciated.
I'm at r dot h dot surname and the rest is btinternet dot com.

Many thanks, Richard
Richard

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