Does any one know about a Harrier jump jet model that is realistic, does any one have any pictures of it please or even a website thanks.


tails

Eric Dainty is the only guy I know of who has done the hover with a harrier, cant remember his site though......

anybody else help?

Doc Watson
www.awatson1.fsnet.co.uk

I don't think that Eric Dainty's harrier will really hover
because I have asked many times about the
reaction control system and have had no response.
Its is my option that it does not have one.
I think all hovering was done in the wind or moving slowly forward.

Eddie Weeks

Hi Eddie,

I live in the same area that Eric lives in. I have seen Eric's third version of his Harrier. And, yes, it does have a reaction control system using bleed air from the ducted fan. I'll try to describe it for you from memory. Keep in mind that it was not designed to be completly scale. For example, it had two (one on each side) main thrust nozzles. Also keep in mind that Eric is an accomplished model helicopter pilot.

The roll is controlled by a vent close to each wing tip. The vent is about 2" x .5", with the long dimension oriented front to back. Inside the vent is a rotating valve that can direct the bleed air up and down at varying rates. A gyro was used to assist in roll stability.

Pitch and yaw is controlled by a plate behind the tail that can rotate in the yaw and pitch directions simultaneously. Just in front of the plate is an exit nozzle for more bleed air.

Thrust is provided by two (one each side) rotating nozzles located at the CG.

From what I understand, Eric's third version came out just a bit too heavy to do proper vertical take off's and landings. (I have witnessed that one flying.) However, I have been told by Eric that his second version did indeed take off vertically, transistion to forward flight and back to hover, and land vertically. He did not mention the wind conditions at the time. I'll see if I can clarify that next time I talk to him.

Regards,
...jim

I think this is a pic of his system.

Dan

Hi Dan,

No, definatly not the system he used in the three versions he made for vertical take off/landing.

It may be the system he used for the prototype he built for a model company, but that one was definatly not designed for vertical performance. It was meant to be much more scale. I did see it test flown at Bay of Quinte a couple of years ago. Flew great. With the rotating nozzles, he was able to do a short take off and landing. But not vertical.

Regards,
...jim

My mistake... I asked that question many times a while back
and received no answer so I wrongly assumed it
did not have one.

Why did he stop all development. I haven't seen anything
new in years.. ?


Eddie Weeks
http://www.corpcomp.com/weeks1/

I guess I wasn't around here when you previously asked.

Eric's job got in the way of further development. He's been very busy for the last couple of years. Lots of travel, etc. When he does have free time, he puts it toward more conventional stuff. Heli's, his regular DF stuff, and his prop jobs.

...jim

BTW, I've got some video I shot of one of your Rig #1's flights last year (Jan. 2002) at Deland. I've edited it and made an mpeg of it. It's 4 minutes long, and about 56 megs. Got an FTP server I can send it to? (Assuming you want it, of course.)

RAF Joke

Q. 500 people in a room, which one is the Harrier pilot ?

A. Just wait he'll tell you !