Westland S-4 Wyvern Plans
British Turboprop Naval Strike (Ground Attack) aircraft of 1955
The Wyvern plans include all details of the scale “Fairey – Youngman Area Increasing Flap” mechanism as used on the original, plus; dive brakes, drag flaps, engine air cooling and dual exhaust ducting, sliding canopy details, hidden control actuators, servo access and mounting, control runs, usable rear battery compartment as on the original (for batteries, switch and air jack, etc.), shock mounted removable motor mounting system (you can hold it in your hand to install the motor), functional tail hook (you can stop the airplane with it, if you want to), landing gear door hinging and actuation, scale airfoils, scale control surface hinging, easy control surface removal system, scale anti-stall strips and wing washout. This is a balsa and plywood plan design
The plans show building jigs. The plans were drawn from a 3-dimensional “wire frame” (computer aided design) and the parts fit!
NOTE: This model is not suitable for a heavier engine, the nose is too long, and it would need an amount of extra weight in the tail.
The Wyvern is much larger than the wingspan seems to indicate. It is a turbine powered carrier borne aircraft, and it is almost as long as its wingspan.
Model Airplane News sells plans for a 36″ wingspan version of this plane, with a documentation 3-view drawing, Plan # FSP0600A, June 2000.
Specs:
- Scale: 1:7
- Wingspan: 75″
- Wing Area: 1060 sq in
- Weight: 18lbs
- Engine: 1.08-1.4 2 stroke