Cart Shopping Cart My Store Account Orders Downloads Shopping Cart Remove item Thumbnail image Product Price Quantity Subtotal × 22. Preliminary Design Equations for Aircraft Weight Estimation $20.00 22. Preliminary Design Equations for Aircraft Weight Estimation quantity $20.00 × 30. The Effect of Center of Gravity on Performance $20.00 30. The Effect of Center of Gravity on Performance quantity $20.00 × 19. The Elements of Field Weight and Balance Control $20.00 19. The Elements of Field Weight and Balance Control quantity $20.00 × 4. The Weight Engineer and the Flutter Problem $20.00 4. The Weight Engineer and the Flutter Problem quantity $20.00 × 15. Organization for Weight Control $20.00 15. Organization for Weight Control quantity $20.00 × 7. Predetermination of Weight Efficiency $20.00 7. Predetermination of Weight Efficiency quantity $20.00 × 13. Will Accessories Impede Our Payload? $20.00 13. Will Accessories Impede Our Payload? quantity $20.00 × 10. Calculation of Landing Gear and Hydraulic System Weights $20.00 10. Calculation of Landing Gear and Hydraulic System Weights quantity $20.00 Coupon: Apply coupon Update cart Available coupons (Click to apply). Cart totals Subtotal $160.00 Tax $0.00 Total $160.00 Proceed to checkout