Q2 Plans Chapter 9 Page 9-01
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- Category: Q-2/Q-200 Plans
- Published: Monday, 22 May 2006 09:05
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MAIN WING CONSTRUCTION INTRODUCTION
..... The main wing is a sandwich composite structure with solid foam core, two layers of UNI at 45 degrees to the trailing edge of the wing for torsional stiff¬ness and surface durability, and spanwise tapes of UNI for bending strength. The T.E. of the wing is per¬pendicular to BLOO. (i.e. the trailing edge of the wing has no sweep). The ailerons are on the inboard section of the wing, and are actuated by an aluminum torque tube. Shear loads are taken by a vertical shear web. .....The main wing is constructed in one piece from tip to tip for strength, lightness, and ease of construction. CUTTING THE SPAR CAPS
..... Begin by cutting the UNI spar caps using the suggested layout on this page. Letter each one of them with a felt tipped marker for identification later, in addition to marking a centerline in the middle, (where the cap will cross BLOO when installed on the main wing). The technique for cutting the spar caps is described in the Composite Materials Education Chapter and should be reviewed at this time. Be sure to carefully roll up and store the spar caps after cutting to prevent damage. JIGGING THE MAIN WING
..... Construction begins by jigging the main wing on the jig table. Locate the main wing cores that you have previously hot-wired. It is not necessary to use either the aileron slot foam cores, or the main wing trailing edge cores, at this time. .....Find the main wing core female jigging templates (6). .....Now study the sketches. The main wing cores are jigged upside down on the jigging table using the main wing core female jigging templates. If your table is not at least 200 inches long, you will have to extend it with a few 2x4's using bando, in order to locate the BLOO main wing core female jigging templates. Note that the shear web is perpendicular to BLOG, and that the main wing core female jigging templates have leading and trailing edges that are tangent, respectively, with the leading edges of the main wing cores, and the main wing shear web. .....Begin by drawing a straight line along your jigging table and marking the locations (BL's) of the main wing core female jigging templates. Next, temporarily set the main wing core female jigging templates on the table so that their trailing edges are along that straight line and their positions coincide with the appropriate BL locations. A string stretched spanwise with a weight attached at either end (see CANARD chapter) may be useful. 
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