Genie IIGenie II is essentially a natural progression from the original Genie design, as published in Model Aviation, July 1997. The obvious intent being to improve what was already a fairly successful design. The two major design changes are an increased aspect ratio for both the wing and stabilizer and utilization a kevlar “taco shell" for the wing leading edge D-box
construction. Both versions of the Genie design were built in 350 square inch and 335 square inch wing area sizes- The larger models being powered by .061 displacement F1J engines. and the smaller by .049 1/2Aengines.
Use of the kevlar wing shells was motivated more by aerodynamic considerations than by structural concerns.
The goal being to achieve a "cleaner" and more uniform airfoil, eliminating the spanwise covering sags between ribs and the chordwise flow disruptions of the main and turbulator spars. However. the increased strength and torsional rigidity was a welcome bonus feature, considering the higher aspect ratios involved, The wing ratios were increased from roughly 8 1/2 to 9 1/2; the stabilizer ratios from roughly 4 1/2 to 5 1/2. All the Genie models use a wing thickness of 8% and a stab thickness of 6%,The airfoils are of my own design as developed for the prior ShocKing and ShuriKing designs. Due to their fairly large size (and my excessive use of cyanoacrylates and epoxies) the 1/2 A models usually weigh between 9 1/2 and 10 ounces. The F1J models tip the scales at between 10 and 10 1/2 ounces, The props used are folders of my own design: 6 1/2 x 2 on the .06ls and 6 x 2 on the .049s.
Although the engines are usually beam mounted on the front of a carbon fiber tube fuselage, I do anticipate radial mounting of the new Cyclon engines in future models.
One final note: the Genie II is a completely "locked up" airplane. That is, like all my models, it has NO auto-surfaces (other than DT).
Nota Sky Scrapers - Fly Off Magazine
construction. Both versions of the Genie design were built in 350 square inch and 335 square inch wing area sizes- The larger models being powered by .061 displacement F1J engines. and the smaller by .049 1/2Aengines.
Use of the kevlar wing shells was motivated more by aerodynamic considerations than by structural concerns.
The goal being to achieve a "cleaner" and more uniform airfoil, eliminating the spanwise covering sags between ribs and the chordwise flow disruptions of the main and turbulator spars. However. the increased strength and torsional rigidity was a welcome bonus feature, considering the higher aspect ratios involved, The wing ratios were increased from roughly 8 1/2 to 9 1/2; the stabilizer ratios from roughly 4 1/2 to 5 1/2. All the Genie models use a wing thickness of 8% and a stab thickness of 6%,The airfoils are of my own design as developed for the prior ShocKing and ShuriKing designs. Due to their fairly large size (and my excessive use of cyanoacrylates and epoxies) the 1/2 A models usually weigh between 9 1/2 and 10 ounces. The F1J models tip the scales at between 10 and 10 1/2 ounces, The props used are folders of my own design: 6 1/2 x 2 on the .06ls and 6 x 2 on the .049s.
Although the engines are usually beam mounted on the front of a carbon fiber tube fuselage, I do anticipate radial mounting of the new Cyclon engines in future models.
One final note: the Genie II is a completely "locked up" airplane. That is, like all my models, it has NO auto-surfaces (other than DT).
Nota Sky Scrapers - Fly Off Magazine
El diseñador en su taller
