Matthew Bernstein Responds

Bernstein, Matthew

doi:10.2307/1225518

Cited by 5 publications

(1 citation statement)

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“…7 Unobstructed sampling of the air stream was achieved by using an open optical cavity with dimensions matching that of the RPVs flow channel. The entire instrument measures 25 cm x 19 cm x 13 cm and weighs about 4 kg.…”

Section: Hci Instrumentmentioning

confidence: 99%

In Situ Measurement of Hydrochloric Acid in Rocket Exhaust Clouds Using a Remotely Piloted Aircraft

Richtsmeier

Goldstein

Bien

et al. 1995

Journal of the Air & Waste Management Association

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An instrumentation system employing an RPV (remotely piloted vehicle) platform was developed for temporally and spatially resolved air pollution measurements, and was used to measure the evolution of gas-phase HC1 in exhaust clouds from a solid rocket motor firing and fuel pit burns. A thermistor and a sensitive (ppmv-level), rapid-response (<0.1 sec) infrared absorption sensor for HC1 were mounted in a flow channel in the RPV, permitting concentration and temperature measurements to be made in the cloud on a several-meter scale. The RPV system was flown in a series of field tests at Thiokol Corporation's Elkton, MD division to evaluate the HC1 content of the exhaust products of a new Mg-based fuel formulation. Measurements were made in the clouds from Al-based and Mg-based solid fuel pit burns and a Mg-fueled motor firing over periods of several minutes. Elevated temperatures and HC1 concentrations were found to be temporally correlated with video images of the particulate cloud. Cl originating from the ammonium perchlorate oxidizer appeared in the exhaust as HC1 in each of the tests. Both the macroscopic and local cloud parameters indicate that the Mg-based fuel may provide some reduction in HC1 concentration compared to the standard Al-based fuel.

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Section: Hci Instrumentmentioning

confidence: 99%