Westland Lysander Liaison / Army Cooperation Aircraft
The Westland Lysander arrived just in time to do battle in World War 2 and saw considerable service in the period following the Grand Conflict.
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In 1934, the British Air Ministry released a requirement for a new "Army Co-Operation / Liaison Aircraft" (Specification A.39/34). The role called for a platform capable of rough-field / short-field operation, long loitering times and excellent vision out-of-the-aircraft. The result of the new initiative became the high-winged, two-seat (tandem) Westland "Lysander" of which 1,786 examples were produced. Service introduction came in June of 1938 following a first-flight recorded two years earlier on June 15th (1936).
The series went on to see operational service during all of World War 2 (1939-1945) and was ultimately taken on by the forces of Australia, British India, Canada, Egypt, Finland, France (Free France), Ireland, Poland, Portugal, South Africa, Turkey, the United Kingdom and the United States.
The aircraft was given a high-mounted monoplane wing arrangement sitting the wings well-forward of midships. The high wing mounting allowed for excellent lift properties needed for Short-Take-Off and Landing (STOL) operation. V-shaped struts secured the underside of the wing (at about the midway point) and reached down to the fixed undercarriage fairings. The main leg wheels were spatted to preserve aerodynamic efficiency while the tailwheel was fixed during flight. The crew cabin was extensively glazed for the vision out-of-the-aircraft needed. The engine was fitted to a compartment at the nose in the usual way (driving a three-bladed propeller unit) and the tail consisted of a single vertical fin with low-set horizontal planes.
Two prototypes were used to prove the design sound - the first flying with a Bristol Mercury XII radial engine of 890 horsepower. It proved successful and this led to adoption of the aircraft as the Lysander Mk.I of which 169 of the type followed into service.
There were ten notable variants of the Lysander line: Lysander Mk.I was armed with 2 x .303 Browning machine guns in fixed, forward-firing mounts at the wheel fairings and a trainable Lewis or Vickers machine gun for the rear observer / gunner. Additionally, this mark could carry a modest bombload totaling nearly 600lb of conventional drop ordnance. Lysander TT Mk.I marked target tug aircraft converted from retiring Mk.I airframes.
The Lysander Mk.II was powered by the Bristol Perseus XII radial piston engine (sleeve valve) of 905 horsepower. Its target tug forms were known as Lysander TT Mk.II. 517 were built to the Lysander Mk.II standard.