Wednesday, 18 December 2013

Simplify model construction, MIG 17

The shape of the Mig 17 is a good candidate for simplicity.

The wing is swept back 45degrees. It is easier to draw then the more famous Mig 15 and the planform possesses good moment for the ailerons to act as elevons, I'd say better than a delta. The mid-section's trailing edge is straight. It increases the wing area and is a good location for a carbon fibre strip to keep the span-wise bending moment and torque moment minimal. A carbon fibre strip would increase overall rigidity of the wing.

The horizontal tail area and moment are small and is mounted high on the vertical tail. This is not good, generally, but when the wing's ailerons are elevons, it is of no consequence and presents less drag. The big vertical tail area will point the model straight.

The nose is the air-intake and is short. It is good for mounting a motor upfront. The fuselage, excluding the fin, is short. It is good to reduce needless weight. CG balancing should not be a problem.

Mig 17
  1. Simplify the wing shape, forget about the un-pronounced scimitar planform, just straight 45degress swept back leading edge, forget about the minute anhedral, just straight will do, simple flat sheet airfoil.
  2. Employ elevons with servos on the wing, flanked by profiled drop tanks/rocket launchers.
  3. Flat horizontal tail glued to flat vertical tail and then the entire tail assembly glued to fuselage
  4. Blue foam fuselage, hollowed to accept receiver, battery and esc.
  5. Blue foam canopy to act as equipment hatch.
  6. Using the Turnigy combination, perhaps 18" wing span is good.
  7. Chuck and zoom!

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