Hi Mel.
I'll start the ball rolling.
They look short - Japanese?
Mitsubishi Ki-2?

You have it the Mitsubishi Ki-2 :ok:
http://i25.photobucket.com/albums/c6...bishi_Ki-2.jpg
You have control

Thanks Mel - sorry, but open house at the moment.

Found one....

http://img152.imageshack.us/img152/5810/img317c.jpg

Graeme. Is it for real or just a mock up? That tail rotor looks really ineffective.

Indeed. No intakes, vents or exhaust visible either. Background forest looks nordic.

I believe it's real Mel. Flew in the early nineties and powered by reaction motors using Hydrogen Peroxide as fuel. Most of the flight testing was carried out in Switzerland, a place called San Vittore (see below), but the photo above shows the pre-production prototype prior to shipping at Newport News, Virginia.

http://img268.imageshack.us/img268/5186/img320k.jpg

That will be the Atlas Rocket Helicopter Swiss Copter then. That tail rotor looks so ineffective.

Done! :ok:

I believe the author Mike Spick had some involvement in the project.

Your control mate.

Your clue helped. I was not looking for a real flyer I was convinced that the first picture showed a mock up. Good challenge Graeme. :ok:
Here is the next:-
http://i25.photobucket.com/albums/c6.../Airquiz21.jpg

Fighter?
British?
Hawker Hornbill?

You are also on a roll Graeme. Hornbill it is .:ok:
You have control.

Just lucky mate. Actually, I was thinking it might have been the Saro fighter based on your flying-boat cockpit hunt.

Must leave you now, heading to work. Cheers Mel. :ok:

Should be easy?....

http://img27.imageshack.us/img27/7241/img325ad.jpg

Interesting challenge Graeme. An aircraft with "ventral cabane struts" similar to the Bristol Fighter and Bristol Tourer aircraft. Is this from the USA?

The Vickers 141 perhaps?

Well done mate! Sorry for the delay. :ok:
Your control Mel.

Thanks Graeme here is the next:-
http://i25.photobucket.com/albums/c6...Airquiz21a.jpg

I'm thinking Czech?
Letov S-328?

You are thinking correctly. It is the Letov S328.
You have control.

Thanks Mel. I'll make it open house for the time being. Cheers.