Like many Rutan designs, the Solitaire uses a canard layout, with a lifting foreplane with elevators for pitch control at the nose, and a rudder at the rear of a tail boom. The pilot sits under a bubble canopy and the electro-hydraulically retractable gasoline engine occupies the space between the pilot's feet and the canard. The aircraft is constructed from fiberglass on Nomex honeycomb and urethane foam.
The 41.751NaN1 wing has a built-in mid-span twist to offset the effects of the canard's downwash, with the inboard 7.41NaN1 having 2 degrees less twist than the outboard portion of the wing. The wing is equipped with very effective trailing edge spoilers, consisting of a flap that deploys down while also protruding its leading edge upward into the airflow.
The canard configuration is designed so that the forward surface stalls before the main wing, making the aircraft unstallable, and also unspinnable. This does not mean, however, that the aircraft cannot be maneuvered into a flight regime where a high rate of descent is achieved.
When it was in production, the kit included all the hardware to assemble the prefabricated fiberglass parts. The fuselage halves came with Nomex honeycomb cores and a special film adhesive to bond the halves together. The main wing spars supplied used S-glass roving spar caps that had been molded in metal molds. The kits also included many molded parts, including the seat pan, canopy pre-mounted in its frame, turtledeck, fuselage bulkheads, wing root fairings, wheel fairings, wingtips and the foam cores used in the wings and the canard.[4]
The initial engine was the 220NaN0 Zenoah G-25, but this was changed to a Robin engine and then later the 200NaN0 Cuyuna 215. The KFM 107e 220NaN0 engine has also been used.[5]
Within two months of the aircraft's introduction in 1982, 50 to 60 sets of plans had been sold. In March 2011 there were seven Solitaires registered in the United States, including one in the EAA AirVenture Museum.[6]
