Fig. 1. Design flowchart of center section

Fig. 2. Finite element model of center section with equivalent load

Fig. 3. Topology optimization contour of center section

Fig. 4. Deformation contour of center section

Fig. 5. Detection principle of parallelism errors

Fig. 6. Detection of parallelism error for center section

Fig. 7. Detection principle of coaxiality error

Fig. 8. Detection of coaxiality error for center section