Anything is a possibility
I would like to hear any ideas. Anything goes.
Maybe we could come to some agreement on something that all of the participants (designers) are interested in.
We could go for aerobatic, glider, trainer, scale, warbird. Whatever captures your interest and you would think would be worthwhile. Also, something you are prepared to build.
I would like to suggest maybe doing something that is unique, or has not been done before.
Maybe a 4 motor WWII bomber that has a 100" wingspan. Only kidding - maybe. ;)
It's ALL "open" to discussion
In a nutshell, my restrictions were only suggestions. I certainly do not want to restrict creativity.
The standard servos are only a suggestion, since it would allow gas modellers to participate (They generally have standard radio gear lying around.) I also prefer larger aeroplanes, since they tend to fly well and are smoother in the air, but it's only my preference. We need to come to a group agreement.
Info: I currently fly a 60" electric that I designed (I've attached a picture of it.) It has 4 standard servos and a standard receiver. I have the plane setup with flaperons with a servo in each wing. Yes, the plane does weight a bit more than it should, but the weight of the motor battery is far more than that of the radio gear.
I certainly would like the idea of designing a warbird, but not a Spitfire, Mustang, Corsair, Hellcat, etc. They have all been done before, and anyone can pick up a kit or ARF of one of them. I'd like to design something that you don't very often see in electric models.
I also like the idea of making an aerobatic model, but those are faily common. The idea of a home built aircraft is an excellent one! There are lots of aeroplanes that are perfect candidates. Here are some sites to look at:
Some Burt Rutan designs might also be nice.
I would like to clarify what this project is intended for. It will not be a contest unless there are 100's of people who are interested and would like the idea of splitting up into design teams and then form a contest. I would like to get to a point where we have a design that is a combination of the best that everyone in the team has to offer. A true meeting of minds. Some will be better at aerodynamic theory and other will know what flies well based on years of piloting experience. Others will know just the right way to build up the wing so that it is straight and true.
We could definitely setup a contest for the best looking plane built from the final design. Anyone know of a sponsor for prizes? Maybe you can speak to your local model shop and come up with some arrangement. ;)
Hope you guys are getting excited. I know I am. I can't wait to get started. Once we have decided on what to design we can discuss what CAD programs to use, and what aerodynamic software might be required.
Scale Specs of the "Caribou"
Here are the 1:1 scale specs of the De Havilland Canada DHC-4A "Caribou":
(found at http://users.chariot.net.au/~theburfs/caribouMAIN.html)
De Havilland Canada DHC-4A Caribou
TYPE: STOL tactical transport
COUNTRY OF ORIGIN: Canada
ENGINES: 2x Pratt & Whitney R-2000 Twin Wasp piston engines, each of 1450 hp.
Wingspan: 95 ft 7.5 in / 29.15 m.
Length: 72 ft 7 in / 22.13 m.
Height: 31 ft 9 in / 9.68 m.
Max. speed: 188 kts / 348 kph
Normal cruise: 158 kts / 293 kph
Initial climb: 1,355 ft / 413 m. per min.
Service ceiling: 24,800 ft / 7,560 m.
Max. range: 1,135 n.m. / 2,100 km.
ACCOMMODATION: Flight crew of two.
32 troops, or 26 fully equipped paratroops.
Empty weight: 18,260 lb / 8,283 kg
Max. loaded: 28,500 lb / 12,927 kg
Vickers Wellington Data & Views
Here is some data I found on the Vickers Wellington:
(found at http://www.nucleus.com/~ltwright/welling.htm)
Wellington Mk.IC Data
Crew : Six
Engines : Two, 1000 hp Bristol Pegasus XVIII
Span : 86'-2" (26.26 m)
Length : 64'-7" (19.69 m)
Height : 17'-5" (5.31 m)
Empty Weight : 18,566 lbs. (8,422 kg)
Loaded Weight : 29,500 lbs. (13,381 kg)
Maximum Speed : 235 mph at 15,500 ft. (4,724 m)
Ceiling : 18,000 ft. (5,486 m)
Range : 1,200 miles (1,931 km) with 4,500 lbs. (2,041 kg) of bombs. 1,550 miles (2,494 km) with 1,000 lbs. (454 kg) of bombs.
Armament : Two 0.303" machine guns mounted in both the front and rear turrets. One 0.303" machine gun mounted in the beam gun position, one each side of the aircraft. Maximum bomb load 4,500 lbs. (2,041 kg)
Here are three views drawings (found at http://www.nucleus.com/~ltwright/3vwelli.jpg)
DHC 4A "Caribou" three views
Take a look at this site:
I found some three view drawings of the DHC 4A "Caribou" at (http://hedgehoghollow.com/ipms/caribou/caribou1.jpg):
DHC 7A Caribou specs and 3 views
I've also found info on the DHC 7A "Caribou":
C-7A Principal Dimensions
Wing Span 95 feet 8 inches
Length 74 feet 0 inches
Height 31 feet 9 inches
Maximum Gross Weight* 28,500 pounds
Powerplants (2) Pratt & Whitney R2000-7M2
* Normal operations - 33,000 pounds for ferry operations
Here are also three views of the DHC 7A Caribou (notice that the nose on the 7A is different to that of the 4A):
(found at http://www.c-7acaribou.com/c7a_aircraft.htm)
Wellington design project...
Hi fellas. I have been reading your posts concerning the design projects and I am very interested in what and where your going. I have just completed a twin engine design of my own which I call the STORK. iIt is powere by twin 4:1 geared 280's and I test flew it back in Oct. I am also in the engineering feild and have been on AUtoCad since 1990 and am currently running R14 at home and 2000i in the office. My stork plans are completly done on CAD. I am currently designing an almost exact scale Junkers 188E twin engine bomber with very easy and similar framework as my stork as that worked out extremely well. It will be powered by twin geared 3.21:1 400's amd have a span 0f 60". My STORK has a span of 54". As an input to your design project, particularly on the Wellington, both of my birds have scale like langing gear and I love taking of from the ground and hate hand launching! With all the wing area of a bomber, it seems like such a waste to ignore LG... I would like to participate in your design of the Wellington and have copied the 3-view that you have posted. Thanks for that. I am in the middle of a move right now but will be able to support the effort in a maximum way shortly, after the holidays and until then we could discuss the desigh issues and featres desired... You can see a picture of the STORK in my post titled "New twin engine fun fly bomber"....... Keith :