INDUSTRIES: AEROSPACE / TEST AND MEASUREMENT
Customer Need / Challenge
Before any of the U.S. Navy’s F/A-18 twin-engine supersonic fighter jets can be put into operation, the wings of the aircraft must undergo fatigue testing in a controlled environment to ensure that they are capable of withstanding the forces that will be encountered during real-world flight throughout the lifetime of the aircraft. Highly accurate measurements must be recorded in order to make sure that a near-exact replication of in-flight conditions is being achieved.
During fatigue tests, Interface Model 1248 Standard Precision Flange LowProfile™ Load Cells are installed inline with the hydraulic cylinders, which apply back-and-forth loading forces to the aircraft. This is carried out over the course of 18 months to simulate in-flight stresses and strains on the wings. Load cells are connected to indicators, which record output.
Capable of withstanding more than 100 million (1×10^8) fully reversible load cycles, Interface’s LowProfile fatigue-rated load cells have performed flawlessly in F/A-18 wing testing – with zero recorded failures in the many years that testing facilities around the world have been using them.
- Model 1248 Standard Precision Flange – LowProfile Load Cell in 500 kN capacity
- Optional Connector Protector
- Model 9840 Load Cell Indicator – One for each load cell to record output
- Customer has the option to use their own system with outputs of mV/V, V or mA, in place of the Model 9840
- Hydraulic testing bed with cylinders
|HOW IT WORKS|
- The F/A-18 is placed on a hydraulic testing bed where it is subjected to loading that simulates in-flight conditions.
- Interface Model 1248 Standard Precision Flange LowProfile load cells are connected to each hydraulic cylinder that applies force to the wings.
- Interface’s Model 9840 Load Cell Indicator is then connected to each LowProfile Load Cell to record output.
- The testing facility analyzes the forces being created by hydraulic cylinders to ensure that they are representative of actual in-flight loading conditions.