These files are large, so be patient during the download. Please read the readme.txt included in the ZIP
The EPP Zulu can be built with or without control surfaces along the leading edge, dubbed here as “drooperons”. The drooperons can be actuated by the same servo as the elevons, making setup fairly simple. With drooperons installed, the Zulu can reach a much higher lift coefficient, ~80%, before stalling, both right-side-up and inverted. This allows for tighter turns, loops, a lower sink-rate, and slower stall speed. The drooperons are also effective at increasing roll-rate, especially at low speeds. With drooperons, the Zulu is also more stable during the deep-stall maneuver, making landings and altitude control easier. Disadvantages of installing the drooperons include higher drag from the extra control surface gap, increased build-time, and higher likelihood of breaking a servo during impact (although this is rare with metal-geared servos).
FrSky X20
FrSky XE
PNG (300x280)
BMP Recommended (300x280)
FrSky X18
FrSky Twin
PNG (180x166)
BMP Recommended (180x166)
FrSky X10
FrSky X12s
PNG (180x160)
BMP Recommended (180x160)
PNG (192x114)
FrSky X9D
FrSky X9E
BMP (64x32)
JPG (155x100)
Some content in menu 2.
Wing area: 472 sq.in (30.5 sq.dm) Aspect Ratio: 5.0 Wing Loading: 3.5 oz/sq.ft (10.7 gm/sq.dm) Airfoils: Zup1060 & Zup1065
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