Guide to calculating a light aircraft

The guide consists of 107 consecutive steps. At each stage, the value of a single characteristic is determined. The design process is designed so that the designer knows where a particular value comes from, which is substituted into the corresponding formula. Each of the formulas has a list of values used in it with a description and indication in which of the steps it was defined, both by formulas and by graphs and diagrams.

It is also important that the entire calculation process from the beginning to the end is conducted using a single example - the yegorych aircraft, the best aircraft of the SLA-87 competition in the category of twin-engine aircraft.

4. Determination of take-off mass in the second approximation.
5. Determining the required wing area.
6. Determining the geometric dimensions of the wing.
7. Determining the geometric dimensions of the horizontal tail and Elevator.
8. Determining the geometric dimensions of the vertical tail and rudder.
9. Determining the geometric dimensions of the ailerons.

Aerodynamics
10. The choice of wing profile.
11. Determination of the derivative of the lifting force coefficient by the angle of attack for continuous flow.
12. Determination of the maximum lifting force coefficient
13. Determining the critical stall angle of attack
14. The mechanization of the wing
15. Specify the value of the stall speed
16. The definition of the Reynolds number for the maximum speed mode
17. Determination of coefficient of friction
18. Determining the coefficient that takes into account the thickness of the wing profile
19. Determination of the resistance of an isolated wing in the zero lift mode
20. Determination of the wing resistance in the zero lift mode
21. Determination of the inductive resistance of the wing
22. Determination of wing mechanization resistance
23. Determination of the drag of the tail
24. Determination of the fuselage drag
25. Determination of the drag chassis
26. Definition of drag other elements of design
27. The calculation of the polar plane
28. Calculation of the aerodynamic quality of the aircraft
29. Calculating the diameter of the propeller
30. Calculating the pitch of the propeller
31.Determination of the static thrust of the propeller
32. Determining the thrust of the ideal screw
33.Determining the efficiency of the propeller
34.Determining the thrust of a real propeller
35.Determining the geometric parameters of the propeller
36.Determination of the required power for horizontal flight
37.Determining the available power of the screw
38.Determining the maximum horizontal flight speed
39.Determining the vertical rate of climb
40. The calculation of take-off distance
41. The calculation of the landing distance
42. The calculation of alignment
43. The calculation of the focus plane
44. Calculation of the maximum rear alignment of the aircraft
45. Calculation of the longitudinal moment of the wing
46. Calculation of coefficients that take into account the deflection of the horizontal tail from the wing
47. Calculation of the coefficient that takes into account the flow deceleration at the horizontal tail during landing
48. Calculation of the coefficient of lifting force of the wing without flaps in the landing position
49. Calculation of the increment of the lifting force coefficient when deflecting flaps
50. Calculation of the flow slope from the wing
51. Determination of the longitudinal moment of the aircraft without a horizontal tail at zero lift force in the landing configuration
52. Determining the efficiency coefficient of the Elevator
53. Determination of the required angle of installation of the stabilizer
54. Determining the maximum forward alignment
55. Checking the plane´s alignment position
56. Calculating the degree of overload stability
57. Calculating the degree of stability with a free control handle
58. Determination of the gear ratio from the control handle to the Elevator
59. Calculation of