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-   -   Heikkis' Silhouette Challenge (https://www.pprune.org/aviation-history-nostalgia/459476-heikkis-silhouette-challenge.html)

Auxtank 8th Mar 2020 09:26

Not too long after though - looks like a radial.

dook 8th Mar 2020 09:45

First flew 1939. Trainer.

Self loading bear 8th Mar 2020 12:39

Culver Cadet
But tail does not look right?

dook 8th Mar 2020 12:56

It doesn't look right because it isn't a Culver..

Self loading bear 8th Mar 2020 19:37

Still no other takers?
Harlow PC-5A

Auxtank 8th Mar 2020 19:42

That's some vertical stabiliser...must have knicked it from a B-17.

Radio antennae looking like a spindly nose gear strut missing a wheel?

dook 8th Mar 2020 20:03

The Bear cracks the Harlow PC-5A.

Auxtank 8th Mar 2020 20:31

Well done Bear.
dook - may we see the photo non-silhouette? - an interesting looking aircraft.

dook 8th Mar 2020 20:35

As requested...

https://cimg7.ibsrv.net/gimg/pprune....63b12efe73.jpg

Self loading bear 8th Mar 2020 20:38

The Harlow photo is on wiki.
https://en.m.wikipedia.org/wiki/Harlow_PC-5

I think it is New bay in the background.

Now this 2D silhouette:

https://cimg9.ibsrv.net/gimg/pprune....7ed8efc3a.jpeg


Auxtank 8th Mar 2020 20:41

It looks positively twitchy...
Wouldn't like to stall it - even though it's a Trainer.
Round and round and round you go - having said that - with that rudder authority - you'd probably get out of Dodge in a trice.
Looks like it's related to the T-6 - when the designers came off the whole big tail trip.

If someone had thought up Uber Air Taxi in the 40's - this is what they would have depicted on the advertising garb;
"Arrive relaxed at your destination, in our fully equipped aircraft - ready to satisfy all your air traveller needs, etc..."

Nice. Any still flying anywhere?

dook 8th Mar 2020 20:43

Probably the same with the L......

I don't know if any Harlows are still airworthy. You can Google as well as I can.

Auxtank 8th Mar 2020 20:55

Unfortunately I can no longer Google on the Internet.
I can only refresh pages that I have recently visited - including this one.

My PC appears to be - without my authority - to be self-isolating...


Self loading bear 8th Mar 2020 21:40

I believe there are some search engines who like to put themselves on top as standard opening page.

There are some PCJ-2’s still flying.
Other PJC-2s That Still Exist

Also contains the story behind the ultra large fin.

dook 8th Mar 2020 22:01

Now then Bear, tell us about B/A ratios.

Self loading bear 8th Mar 2020 22:14


Originally Posted by dook (Post 10707162)
Now then Bear, tell us about B/A ratios.

I do not know much about B/A-ratio's.
I am just a deep sunken shipbuilder spinned out of his education.

Please elevate me (and others)

dook 9th Mar 2020 08:08

Not enough space here to go into pro/anti-spin characteristics and recovery.

I think the challenge is the Lockheed Alcor but I'm not sure exactly which model.

dook 9th Mar 2020 21:49

Further investigation indicates it is probably a DUO-4 or DUO-6.

Self loading bear 9th Mar 2020 23:44

Dook scores again!
the Alcor (Olympic) Duo.
This is clearly the Duo-6 as anyone can see due to the difference in air slots in the engine cowling!
remarkable engine set-up. Which forced me to only post a side view.

https://cimg3.ibsrv.net/gimg/pprune....2052f7045.jpeg

SpringHeeledJack 10th Mar 2020 07:20

Just a curious question having observed, but not taken part in these threads over the last decade or so, who or what is "Heikkis' " ?? I've looked back, but there never seemed to be any posts with that name. Just curious tis all ;-)

dook 10th Mar 2020 19:06

Good morning/afternoon/evening all.

https://cimg4.ibsrv.net/gimg/pprune....7507b8b888.jpg

Self loading bear 10th Mar 2020 22:48


Originally Posted by SpringHeeledJack (Post 10708463)
Just a curious question having observed, but not taken part in these threads over the last decade or so, who or what is "Heikkis' " ?? I've looked back, but there never seemed to be any posts with that name. Just curious tis all ;-)

There is a professor Heikki Kalviainen who has done much on Pattern Recognition and Image Analysis.
But that might be pure coincidence.

The Baron 11th Mar 2020 01:25

Lake Buccaneer per chance?

dook 11th Mar 2020 09:18

It's not Lake Buccaneer. Check the tailplane position.

Steamer Ned 11th Mar 2020 13:36

Re SHJs question (#11700) my post #10830 of 24th Oct 2012 may provide a clue. Ned

dook 11th Mar 2020 21:32

The challenge was American and only one was built.

treadigraph 11th Mar 2020 22:29

David Thurston involved?

Referring back to the Harlow, it seemed familiar and I think I saw one at Oshkosh. The name that sprang to mind was incorrect!

dook 12th Mar 2020 10:26

No involvement by David Thurston.

dook 12th Mar 2020 12:33

Clues are required I feel. This should help.

https://cimg9.ibsrv.net/gimg/pprune....13c32cd4bf.jpg

John Eacott 13th Mar 2020 04:17

Bunyard BA-3X Sportsman


https://cimg6.ibsrv.net/gimg/pprune....a47af9f58d.jpg

dook 13th Mar 2020 09:12

At last we have a winner.

John Eacott has found the Bunyard BA-3X Sportsman.

All your JE.

John Eacott 14th Mar 2020 03:58

A self created silhouette; should be easy :hmm:


https://cimg4.ibsrv.net/gimg/pprune....eb2ade63a.jpeg

dook 14th Mar 2020 11:35

Looks like something from the Mad Max.

MReyn24050 14th Mar 2020 14:36

I believe it is the Saunders Roe Skeeter Mk6 G-AMTZ fitted out as an air ambulance.

John Eacott 15th Mar 2020 04:23


Originally Posted by MReyn24050 (Post 10713754)
I believe it is the Saunders Roe Skeeter Mk6 G-AMTZ fitted out as an air ambulance.

Sure is: you found the original photo :cool:


https://cimg9.ibsrv.net/gimg/pprune....f887d2da38.jpg

MReyn24050 15th Mar 2020 11:13

No John I did not find that photograph of the aircraft, but from the cockpit shape and nose wheel I thought it was possibly a skeeter with side litters and then found a side view of the aircraft. I understand the aircraft was fitted with a 200 hp Gipsy Major engine. I also understand the tank on top of the main rotor hub contained HighTest Peroxide for rocket booster system to the main rotor. That must have been a nightmare, good job the Bell turbocharged Sioux came along..

Here is the next:-
https://cimg6.ibsrv.net/gimg/pprune....d033d4d396.jpg

Auxtank 15th Mar 2020 12:16

Curtiss Model 54 Tanager?

Fareastdriver 15th Mar 2020 16:36


I also understand the tank on top of the main rotor hub contained HighTest Peroxide for rocket booster system to the main rotor.
The two blokes in the litters are the pilot and observer when they tried it.

MReyn24050 15th Mar 2020 19:57


Originally Posted by Auxtank (Post 10714777)
Curtiss Model 54 Tanager?

You have it. You have control.

Auxtank 15th Mar 2020 20:59

Thanks (again!)

Right, here ya' are then...

https://cimg1.ibsrv.net/gimg/pprune....1744619d03.jpg


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