Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.
Fig. 5.
Fig. 6.
Fig. 7.
Fig. 8.
Results of regression model coefficient calculations for studied parameters_
| Parameter | 17-18(L) | 17-18(R) | 13-14(L) | 13-14 (R) | 9-10 (L) | 9-10 (R) |
|---|---|---|---|---|---|---|
| a0 | 19.965 | 19.568 | 45.358 | 46.063 | 70.194 | 70.312 |
| a1×10-5 | -2.847 | -3.015 | 4.27 | 3.958 | 1.035 | 1.1 |
| σt | 1.753 | 1.803 | 2.021 | 2.123 | 1.374 | 1.382 |
| r2 | 0.259 | 0.309 | 0.256 | 0.30 | 0.283 | 0.317 |
| F | 1.02 | 1.007 | 0.998 | 0.834 | 1.064 | 0.934 |
Sample estimates of distribution parameters derived from levelling measurements at control points_
| T, hours | Parameter | Data from control cross-sections | |||||
|---|---|---|---|---|---|---|---|
| 9/10 | 13/14 | 17/18 | |||||
| L | R | L | R | L | R | ||
| 0 to 5,000 | 70.11 | 70.42 | 46.00 | 46.12 | 20.34 | 19.82 | |
| s | 0.85 | 1.11 | 1.66 | 1.74 | 1.39 | 1.32 | |
| g1 | 0.61 | 0.04 | 0.10 | -0.72 | 0.34 | 0.68 | |
| χ2 | 6.67 | 2.61 | 1.59 | 8.50 | 0.78 | 2.81 | |
| 5,000 to 15,000 | 70.31 | 70.25 | 45.40 | 45.91 | 19.41 | 19.01 | |
| s | 1.49 | 1.19 | 1.94 | 1.82 | 1.47 | 1.60 | |
| g1 | 0.72 | 0.99 | 3.5 | 2.17 | -0.27 | 1.93 | |
| χ2 | 7.79 | 2.13 | 2.07 | 5.38 | 6.80 | 9.21 | |
| 15,000 to 25,000 | 70.51 | 70.65 | 46.01 | 46.54 | 19.07 | 18.78 | |
| s | 1.37 | 1.01 | 1.49 | 1.92 | 1.56 | 1.35 | |
| g1 | -1.15 | -0.02 | 0.59 | -0.95 | -0.80 | -0.44 | |
| χ2 | 2.13 | 4.96 | 6.80 | 6.34 | 9.57 | 9.35 | |
| 25,000 to 35,000 | 70.63 | 70.62 | 46.27 | 46.76 | 18.96 | 18.61 | |
| s | 1.65 | 1.18 | 1.39 | 1.56 | 1.65 | 1.26 | |
| g1 | -1.21 | -1.00 | -0.61 | -0.75 | -0.69 | -0.68 | |
| χ2 | 6.38 | 7.79 | 6.55 | 7.87 | 9.35 | 8.68 | |
| 35,000 to 48,000 | 70.49 | 70.57 | 47.57 | 48.12 | 19.07 | 18.47 | |
| s | 0.97 | 1.21 | 1.37 | 1.40 | 1.62 | 1.48 | |
| g1 | 1.15 | -0.68 | 0.05 | 1.90 | -0.93 | -0.58 | |
| χ2 | 9.96 | 7.53 | 5.38 | 3.69 | 9.03 | 8.50 | |
Aircraft levelling data for An-24_
| Purpose of measurement | Name of measurement | Set dimension (considering structural weight), mm | |
|---|---|---|---|
| a | b | ||
| Wing setting (centre section) | Elevation difference of point 9 over point 10 | 72±2 | |
| Elevation difference of point 9L over point 9R | 0±2 | 0±2 | |
| Wing setting (angle of incidence) | Elevation difference of point 13 over point 14 | 47±2,5 | |
| Elevation difference of point 17 over point 18 | 20±2 | 18±4 | |
| Wing setting (dihedral V angle) | Elevation difference of point 13 over point 9 | 21±5 | |
| Elevation difference of point 13 over point 17 | 134±8 | 134±18 | |
| Elevation difference of point 17L over point 17R | 0±10 | 0±10 | |