Firehawk oz10217

 

Firehawk - plan thumbnail image

Firehawk - completed model photo

Submitted to Outerzone: 27/06/2018
Outerzone planID: oz10217 | Filesize: 1120KB | Format: • PDFbitmap | Credit*: Circlip, RFJ

   

About this Plan

Firehawk. Radio control sailplane. Wingspan 125.5 in. Wing area 1192 sq in.

Quote: "THERE has never been an airplane better named than the Firehawk. It possesses the attributes of the proverbial hawk! It's agile, able to work very light lift, and, best of all, it has an excellent lift drag ratio. What a dynamite sailplane for thermal duration contests! Not only will the Firehawk go head-to-head with the best of the super ships, but its dynamic range is broader.

This plane is pure fun to fly. Launches are steep, arrow-straight, and high. In fact, launch height will be consistently higher than most sailplanes on the field. The Firehawk is a stable airplane and not very difficult to fly. Response to control inputs is positive and quick. It tracks in turns as if on rails, with no tendency for the nose to fall through into the center of the turn. If you do manage to stall, recovery is immediate and gentle. As a matter of fact, once the plane is settled down after towhook release, only minor corrections are needed every now and then to maintain straight-and-level flight.

So far I've found no nasty habits. The plane will indicate lift just ahead of the confirming tone from the sniffler. I've been able to work turbulent, small-diameter lift about 50 to 60 feet from the ground back up to launch altitude. The thermal sniffler helps in centering the core and controlling pitch attitude while working lift. Flaps/ spoilers are required to slow it down for the landing, and once you get used to these landings, you won't want to land any other way. With practice, the plane's forward movement can be brought to a dead halt right over the spot at touchdown.

Construction of the Firehawk is rather straightforward and conventional. If you've built any of the more popular kits now available, the Firehawk shouldn't pose any difficulty. Try to save weight wherever possible, from the choice of wood to the application of glues..."

Firehawk, MAN, April 1986.

Direct submission to Outerzone.

Update 05/07/2018: Added the missing 3rd sheet now.

Supplementary files

Article pages, thanks to RFJ.

Corrections?

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oz10217 datafile

Firehawk  
by John F Clarke
from Model Airplane News
April 1986 
126in span
Tags: Glider R/C
all formers complete :)
got article :)

 

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User comments

Wing plan?
anon - 04/07/2018
Ah. Fair point. You know, I didn't even notice that. OK. Bear with me, I only have these 2 sheets here at the moment.
SteveWMD - 04/07/2018
Ok, fixed now :) many thanks to RFJ and Circlip.
SteveWMD - 05/07/2018
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Notes

* Credit field

The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.

Scaling

This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.

 

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