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