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  • Using Noise for RF Receiver Built-In Test Applications
    Microwave thermal noise has long been employed for built-in test (BIT) of receivers and radiometers. Today's compact solid-state noise sources are broadband and extremely stable making them very useful signal sources for a variety of tests. What is not commonly known is how many different types
  • X-40A sails through flight tests
    NASA's X-40A, built by The Boeing Co., completes its fourth free-flight test at Edwards AFB. A pair of technicians position the X-40 in its cradle prior to being lifted and dropped by an Army Chinook helicopter. When completed, the X-37 will be carried into orbit in the bay of the Space Shuttle
  • Rapid-prototyping resin good enough for wind-tunnel tests
    A heavily filled composite stereo-lithography (SL) resin from DSM Somos, Elgin, Ill., let the Italian rapid-prototyping service bureau Provel s.r.l. test a scaled prototype of the M346 trainer aircraft in a wind tunnel. A scale model of the Alenia Aermacchi M-346 trainer was built in several
  • Title Tandem Cylinder Assembly & Test Cell (.pdf)
    This project featured a synchronous assembly system to assemble and test a Tandem Master Cylinder. The system was designed, built, and installed for a Japanese Tier one supplier in the USA by Advanced Assembly Automation (AAA), a division of Assembly and Test Worldwide (ATW). All phases
  • New Test Facility Mimics Rail Car "Humping "
    quot;Humping, " in railroad jargon, means to couple railroad cars together by slamming them into one another at low speed. A 14-wheel rail test car (left) slams into a special barrier at speeds to 15 mph. The system from Control Power-Reliance, Troy, Mich., emulates the humping action of railroad
  • AWA Surge Test Pass/Fail Criteria
    When performing a surge or surge comparison test on three phase motors, you are evaluating the integrity of the coils inside the motor. There are certain motors that will, by design, show a mismatch when the phase signatures are compared to each other. Why? Because there are two common winding
  • Software Lets Designers "Test Drive " Machines
    Rafael, Calif., to generate accurate 3D models that validate form, fit, and function a machine is built. "A digital model or prototype lets users 'test drive' a machine early in the cycle, " says Matt Dykhouse, a Pearson mechanical engineer. "For example, designers can test constraints and the range
  • Accuracy Tests with ABB Robots
    for the line when it is built - this will determine a number of factors, not least the efficiency and performance of the line.
  • Life Test Stability/Aging Data Obtained from Two Studies (.pdf)
    bonding operation, and seal them into TO-46 packages that were soldered to test fixtures designed and built by the customer.
  • Low Outgassing Accelerometers and Cables for Thermal Vacuum and Vibration Test Environments
    and obscure them, rendering them useless during their intended application. During random vibration, swept sine or shock testing prior to flight, spacecraft payloads are. often fitted with accelerometers in hard to reach mounting locations. As the space structure is. built up around them, it can

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