Junkers Profly Ultima Explained

The Junkers Profly Ultima is a German aerobatic homebuilt aircraft that was designed by Andre Konig and produced by Junkers Profly of Kodnitz, introduced in 1993. When it was available the aircraft was supplied as a kit for amateur construction.^[1]

By January 2014 the aircraft was no longer offered by the company.^[2]

Design and development

The Ultima features a cantilever low-wing, a two-seats-in-side-by-side configuration enclosed cockpit under a bubble canopy, fixed tricycle landing gear with wheel pants and a single engine in tractor configuration.

The aircraft's 8.21NaN1 span wing mounts flaps and has a wing area of 10.5m2. The cabin width is 101cm (40inches). The acceptable power range is 50to and the standard engine used is the 800NaN0 Rotax 912UL four stroke powerplant. For its aerobatic role the Ultima is stressed to +6 and -4 g.

The Ultima has a typical empty weight of 260kg (570lb) and a gross weight of 450kg (990lb), giving a useful load of 190lb. With full fuel of the payload for pilot, passenger and baggage is just 103kg (227lb).

The manufacturer estimated the construction time from the supplied kit as 400 hours.

See also

• List of aerobatic aircraft

Notes and References

1. Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition, page 182. BAI Communications, 15 July 1998.
2. Web site: Flugzeuge. 6 January 2014. Junkers Profly. 2014.