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Gary Taylor BMAA 1325
livin' the dream...
      
Date Joined Jan 2006
Total Posts : 685
| Posted 8/2/2011 7:04 PM (GMT +1) |   | | If someone will build me an X-14 I'll fly it! What a fantastic, minimalist design.
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Laurie Hurman
Someone shut this guy up!
Date Joined Dec 2006
Total Posts : 737
| Posted 9/2/2011 9:51 AM (GMT +1) | | Well then you're braver than me -
42 hp engine, 80mph top speed and 45 Kg empty weight - yea right  | | Back to Top | | |
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Kirk Sutton
Forum Moderator
Date Joined Mar 2009
Total Posts : 792
| Posted 9/2/2011 12:10 PM (GMT +1) | | And the X14 is not entirely original in design or concept - there is/was a US Army fold-up aircraft of exactly the same layout and size (right down to flat twin engine and forward sweep on the wings to accomodate the CofG) developed and tested in the late 50's early 60's. I'll dig out the designer and articles at home - plus there is one sitting in a museum in Vietnam (Hanoi I seem to recall) dating from that time. The design when abandoned by the US millitary was available as unclassified (hence the machine in the museum - and the fact it is in Vietnam also hints at where it was tested).
Sorry but my memory for instant recall of all the odd-ball machines I have read about and kept clips of is not what it used to be :-( | | Back to Top | | |
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Kirk Sutton
Forum Moderator
Date Joined Mar 2009
Total Posts : 792
| Posted 10/2/2011 5:28 PM (GMT +1) | | |
Similar in basic layout and concept to the X-14d was the earlier PDQ.
The PDQ and PDQ-2 pre-dated the X-14 as they came from the 1970's and were a much more reasonable approach to a minimum aircraft than the X-14d in terms of size and complexity but had a similar concept of a flying seat.
It was designed by Wayne Ison - he of later MiniMax fame - around the idea of simple and low cost flying seat with the engine pushing above the pilot.
It never really got off the ground as a plans build and Ison and TEAM never attempted to lighten it to true microlight weight or produce it.
PDQ Specifications
Wing Span 18' 6"
wing area 64.75
Length 14' 6"
Empty Weight 350 lbs (with VW)
Gross weight 600 lbs
Max speed 80 MPH
Cruise speed 60-70 MPH
Stall speed 45 MPH
Engine 1385cc VW
Seats 1
PDQ-2 had increased span of 20' 6" but the rest remained the same
Image Attachment :
pdq2.gif 132KB (image/gif)This image has been viewed 526 time(s). | | | |
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Paul Dewhurst
Date Joined Sep 2006
| Posted 11/2/2011 5:33 PM (GMT +1) | | Good stuff Kirk. I googled for info on it and drew a blank, so your posting came as a pleasant surprise.
It's really like a very tiny quicksilver in a way, with a hugely complex wing. Even with the slats and multi slotted flaps It's hard to believe that with a 1.76m wing carrying around 150kg of plane and payload giving 85kg/m wing loading that the stall speed could be 55kmh That would need a Clmax of over 5.5!
Just under 4m of plain flapped wing ought to do the trick and bring it in at just under 35 knots stall though - but that's assuming the same 150kg flying weight!
Looks like there was a bit of activity making varients with the aim of production ten years or so ago - I wonder how far they got?
Paul | | Back to Top | | |
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Ian White
A bit on the mouthy side
Date Joined Nov 2010
Total Posts : 56
| Posted 12/2/2011 10:21 AM (GMT +1) | | | Kirk, what machine is your KFM107 in? I used to own one in a Moni 13 years ago. | | Back to Top | | |
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