New Aerospace Testing Products

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Airflow visualization

A new portable fogger, FlowMarker, was developed by Cambridge AccuSense Inc. to provide easy airflow visualization in indoor environments. Since FlowMarker does not cause the air to rise, the instrument provides visualization of the air's natural movements without adding any disturbances. According to the company, the unit relies on completely non-toxic and environmentally safe fog, which breaks down into carbon dioxide and water.

Piezoelectric accelerometers

Endevco Corp. has developed a range of piezoelectric accelerometers along with a new portable accelerometer calibration device. Models 515 and 518 miniature piezoelectric accelerometers are designed specifically to provide high-performance integrated vibration measurement of machines, structures, and vehicles. Model 515 output is at 10 pC/g, with an amplitude response of 0.05-12,000 Hz, while Model 518 has an output of 100 pC/g, with an amplitude response of 1-7000 Hz. Both models are hermetically sealed and capable of providing long-term reliability in harsh environments.

Models 525 and 528 are low-impedance instruments that offer a wide frequency response, wide bandwidth, high shock survivability, and low noise. The dynamic range of Model 525 is ±50, ±100, or ±500 g, while for Model 528 the range is ±5, ±10, and ±50 g. Amplitude response of the Model 525 is 0.5-12,000 Hz and 0.5-10,000 Hz for Model 528.

The Model 28959F/FV portable accelerometer calibrator provides calibration for charge-mode piezoelectric, voltage-mode piezoelectric, piezoresistive, and variable-capacitance accelerometers. The unit features a test amplitude adjustable up to 10 g over the frequency range of 10 Hz to 10 kHz. The device is capable of storing serial number and type, test parameters, date/time, and test results for over 1600 tests, and a built-in printer can provide a hard copy immediately. The calibrator also verifies accelerometer polarity. An internal reference accelerometer serves as the comparison standard.

Airline testing hoses

Hoses that are compatible with media used by the airline testing industry are featured in Parker Hose Products' Phosphate-Ester Compatible Hoses product bulletin. The document provides details about the firm's 424, 304, 774, and 804 hoses engineered for aggressive aircraft hydraulic testing equipment. Detailed specifications of hose and compatible fittings and crimping machines are provided.

Gamma irradiation test facility

A new Gamma Irradiation Facility was opened at Sandia National Laboratories. The facility can be used for space technology development, military systems vulnerability testing, nuclear reactor component development, and many other applications. Objects as large as tanks or satellites and as small as microchips can be tested at the facility for their capacities to withstand the damaging radiation environments they might experience in space, near stored nuclear materials, or during a wartime nuclear exchange.

The facility includes two 10 x 10-ft test cells, one cavernous 18 x 30-ft chamber that can accommodate large test objects such as weapon assemblies, military vehicles, or space equipment, and an 18-ft-deep pool of water where underwater experiments can be conducted. Pins made of radioactive cobalt-60 make up the gamma source arrays that are used to subject specimens, such as electronic components, to radiation. The cobalt source arrays move along underwater tracks beneath the test cells and are automatically raised into and lowered out of the chambers to deliver the desired dose of gamma radiation to test objects. A test can last seconds to months, depending on customer needs. Gamma dose rates as low as tens of rad/h to as high as 300,000 rad/h can be delivered.

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