TPS Structures

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Across
  1. 6. Ratio of lateral strain to axial train
  2. 8. Coupling of dynamic airframe aeroelastic response with flight control system
  3. 17. When the load acts over a length or area
  4. 20. Interaction of unsteady aerodynamics, structural elasticity, and airframe inertia
  5. 21. Increases stress when decreased
  6. 25. Stresses above this strength on a material result in cracks or fractures
  7. 27. Static/ground test gives confidence in this
  8. 28. Region where material will not go back from a deformation
  9. 29. Sensor that you place on a node to avoid sensing bending mode
  10. 31. Type of structure that is critical to flight
  11. 33. Structural element that primarily keeps wing or fuselage shape
  12. 37. Noisy cavity loading
  13. 38. Loads from pressure gradients on the OML
  14. 40. Limit defined by S-N curve
  15. 41. Structure type that primarily enhances aerodynamics
  16. 42. material that has identical properties in all directions such as glass or metal
  17. 44. Structure type that best handles shear/torsion
  18. 45. “As the extension, so the force” law
  19. 47. Structural element that transfers aero loads to the substructure and carries torsion and shear
  20. 48. Minimum of Three percent for flutter, “g”
  21. 49. The unique point on a beam where the application of shear does not produce a twist (2)
  22. 50. Percentage of static loads the test article can fly to when ground tested to 100%
Down
  1. 1. Structural members that carries bending and axial loads
  2. 2. Loads within the structure
  3. 3. Anisotropic material that is tailorable
  4. 4. increase this mode to increase flutter speed
  5. 5. Loads from acceleration of mass
  6. 7. Canning Wavy deformations in broad flat metal
  7. 9. Divides skin into sections and carries bending and axial loads from pressurization
  8. 10. Comprised of 4 strain gauges placed on areas of high stress and low strain gradients
  9. 11. Combined airloads and inertia loads including static and dynamic
  10. 12. Forms the wingbox and carries bending and axial loads
  11. 13. Bending mode that has two nodes
  12. 14. Failure type in a composite laiminate
  13. 15. Resistance to fatigue (repeated straining)
  14. 16. Percentage of flutter margin demonstrated through flight test
  15. 17. “Strechiness” reduced by strain hardening
  16. 18. Loads encountered at higher speeds
  17. 19. Random oscillation associated with separated airflow
  18. 22. Ideal placement for rate-gyros
  19. 23. Load type that is best handled by fibers or plates (biaxial)
  20. 24. An option to correct ASE in addition to sensor placement (not at low frequencies!)
  21. 26. Address cost in this part of the LCC along with ops for biggest impact
  22. 30. Resistance to impact loads
  23. 32. Flight test with this for confidence in loads
  24. 34. A failure in a beam from compression or in a plate/skin from shear
  25. 35. A higher value of this results in a steeper slope in the linear portion of the stress-strain diagram
  26. 36. Ground ___ Testing focused on structural modes
  27. 39. Aeroelastic instability, usually destructive divergent oscillations
  28. 43. Structure type that is good in bending but not in torsion
  29. 46. Structural members that carry circumferential pressurization loads