Cart Shopping Cart My Store Account Orders Downloads Shopping Cart Remove item Thumbnail image Product Price Quantity Subtotal × 1015. Preliminary Weight Estimation of Canard Configured Aircraft $20.00 1015. Preliminary Weight Estimation of Canard Configured Aircraft quantity $20.00 × 1021. A Procedure for Calculating the Weight of Wing Structures With Increased Service Life $20.00 1021. A Procedure for Calculating the Weight of Wing Structures With Increased Service Life quantity $20.00 Coupon: Apply coupon Update cart Available coupons (Click to apply). Cart totals Subtotal $40.00 Tax $0.00 Total $40.00 Proceed to checkout