Airco DH5 (oz4262)

 

Airco DH5 - plan thumbnail image

About this Plan

Airco D.H.5. Free flight scale WWI biplane model for .5 - 1 cc engines. Scale is 1/12.

Quote: "KIT MILFORD has been fascinated for years by the D.H.5 with its unique backstagger and classic de H. tail shape. The Aircraft Described feature in the April 1963 Aeromodeller finally set him off, especially as he hadn't then seen the statement in the March issue that it was considered a difficult subject! Perhaps for this reason it has proved perfectly straightforward despite using scale tail areas and dihedral.

The structure was designed on the principle that scale models have a hard life and should be built to last. Hard balsa is used throughout, with silk or nylon covering: dress snaps for assembly, and no
rubber bands except for the correctly bunjee-sprung undercart. Scale rib spacing gives the wings that true World War I character. All this adds up to a really tough model which yet only weighs 10-1/2 oz (with a heavy engine), with a modest 7 oz/sq ft loading.

Stability is quite adequate with the scale tailplane, but a larger version is shown for those who want to play safe, glide trim would be a bit less sensitive with this. Under power the model is very docile, its chief peculiarity is that downthrust merely spoils the take off while having very little effect on the flight pattern. We put this down to the short nose moment plus the heavy downwash from that rearward top wing..."

Quote: "Attached are scans from the Oct 1965 Aero Modeller re the de Havilland dh5. I scanned the article at 300 dpi and the plan at 1200 dpi. The plan in the magazine is 1/5th full size".

Direct submission to Outerzone.

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Airco DH5 - completed model photo

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Scaling

This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.

 

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