joker24458
Member
Let me start off by saying that I always have to be building something.
This time it will be a 300% (not 150%.....not 200%.....but 300%) FT Viggen. I figured since I have a 100% Viggen and David's original MiniViggen (45%), it's time to build a MonsterViggen (just came up with that name).
The MonsterViggen will be about 9.5ft in length (that's almost two of me! yes I am short) and close to 7ft wingspan. The airframe will cost around $30 which includes 23 sheets of FliteTest/DTF foam and wood spars. It will be an EDP (electric ducted prop), which means that it will use a normal motor and propeller, but all contained inside of a duct similar to an EDF. Using an EDF at this size would be too pricey for me. I am planning to use a 3s 2200-3200mah lipo to power an NTM 35-36A 1400kv motor swinging a 8x6 or 8x8 APC prop. The 8" prop is due to the size limitation of the EDP duct; using an 8" prop will result in less than 1/2" of clearance inside the fuselage/duct.
While the name "MonsterViggen" may sound intimidating, it will actually/unfortunately not be a very fast plane at all. At first, I planned to make the airframe around 8lbs, but it was difficult (I won't say impossible, but it's pretty close) to find a motor that could produce 8lbs+ of thrust (or even half that) while only using an 8" prop. Therefore the goal became to make it as light as possible. From some rough calculations I have concluded that the (lightened version) airframe alone will weigh around 3.5lbs, so a motor that could produce 2.5lbs of thrust should at least get it in the air.
From that I can estimate the AUW including the battery to be around 4 to 4.5lbs, and with a wing area of approximately 3000 inches sq, the wing loading should be just shy of 3.5 oz/sq ft. This will make for a very slow plane, but it should still be pretty fun.
By the way, a canard on the MonsterViggen will be bigger than a wing on a normal sized Viggen.
I hope to either finish this for FliteFest 2015 or finish it at the event - let me know what you guys think about that. Any other ideas or suggestions would be welcomed as well!
This time it will be a 300% (not 150%.....not 200%.....but 300%) FT Viggen. I figured since I have a 100% Viggen and David's original MiniViggen (45%), it's time to build a MonsterViggen (just came up with that name).
The MonsterViggen will be about 9.5ft in length (that's almost two of me! yes I am short) and close to 7ft wingspan. The airframe will cost around $30 which includes 23 sheets of FliteTest/DTF foam and wood spars. It will be an EDP (electric ducted prop), which means that it will use a normal motor and propeller, but all contained inside of a duct similar to an EDF. Using an EDF at this size would be too pricey for me. I am planning to use a 3s 2200-3200mah lipo to power an NTM 35-36A 1400kv motor swinging a 8x6 or 8x8 APC prop. The 8" prop is due to the size limitation of the EDP duct; using an 8" prop will result in less than 1/2" of clearance inside the fuselage/duct.
While the name "MonsterViggen" may sound intimidating, it will actually/unfortunately not be a very fast plane at all. At first, I planned to make the airframe around 8lbs, but it was difficult (I won't say impossible, but it's pretty close) to find a motor that could produce 8lbs+ of thrust (or even half that) while only using an 8" prop. Therefore the goal became to make it as light as possible. From some rough calculations I have concluded that the (lightened version) airframe alone will weigh around 3.5lbs, so a motor that could produce 2.5lbs of thrust should at least get it in the air.
From that I can estimate the AUW including the battery to be around 4 to 4.5lbs, and with a wing area of approximately 3000 inches sq, the wing loading should be just shy of 3.5 oz/sq ft. This will make for a very slow plane, but it should still be pretty fun.
By the way, a canard on the MonsterViggen will be bigger than a wing on a normal sized Viggen.
I hope to either finish this for FliteFest 2015 or finish it at the event - let me know what you guys think about that. Any other ideas or suggestions would be welcomed as well!
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