|Picture Type:||Rochester Photo Negative|
|Title:||Viggen Test Equipment|
|Date:||18 Jul 1972|
|Location:||Negatives Cabinet PM ("54/") [RAA Office]|
The Viggen is a single seat aircraft and the HUD was deemed to be essential to reduce the pilot’s workload. A HUD was required not just for weapon aiming but also it was used as a precision landing aid, making it possible to aim just 30metres in from the threshold; to assist in the difficult manoeuvre of landing on prepared stretches of road of less than 800metres and at a low angle of attack i.e with minimal flare. The HUD was designed in close collaboration with Svenska Radioacktiebolaget, RAE Farnborough and with Elliott Flight Automation This is the Alignment Jig for the Pilot's made from a stable alloy called Alcoa. Two Collimators are shown which provide illuminated crosswires for the alignment. The Jig was made around 1965.