ENGINES It is clear that for the helicopter operator, an on-site
advanced distillation system is the only system that will provide controlled and documentable quality water. Only distilled water will give the time life limited engine components a chance to retire at their prescribed life limit by keeping their protective coatings clean — all this while improving engine reliability and performance, as well as protecting warranty coverage by meeting or exceeding the OEM water quality requirements. The highest purity in water quality can only be obtained
through the distillation process. Since we can’t wait for a rainy day (especially in California) to provide pure, distilled water, the next best thing is having an on-site distiller that will provide constant water purity daily. On-site water distillation off ers the operator consistent and controlled water purity.
The Proof While I agree that all of the foregoing charts and scientifi c data make logical sense, it also could be suspected as infomercial and theoretical hyperbole. Here are some real-life examples of how using pure water has made a diff erence in actual fl ight operations.
Distillers in the Operational Environment
Southwest Airlines Performance benefi ts of regular pure water usage have been documented in detail by Southwest Airlines using Pratt & Whitney turbine rinse distilled water systems. The on-wing time of the GE/ SNECMA CFM56 engines installed in the Southwest Airlines fl eet of 737s has been increased from 12 to 18 months. As an added benefi t of reduced maintenance costs, the engines are more fuel effi cient. The engines have reduced fuel usage of 1.5 percent per fl ight hour.
Turbomeca Operators Almost without fail, every pilot will perform a daily power check. For certain, without fail, our friendly pilots will let us know right away when they have an anemic helicopter. Our fi rst maintenance operation (after we have verifi ed the instruments are correct), should be to perform an engine wash. If you don’t think that a wash helps
for power recovery, take a look at the chart.
Preventative Maintenance Health Monitoring Continuing with the “a picture is worth a thousand words”
theme, see the photograph of the two rows of turbine blades. Both sets have been water rinsed daily. The blades in the top row have been rinsed with plain old tap water, and had to be removed from service after 3,000 hours. The blades in the bottom row have seen a lifetime of daily rinses with pure distilled water. These blades, subjected to pure water washes, have 3,800 hours of engine operating time and are back in service. This is great evidence of the eff ectiveness of regular rinses and washes using pure water.
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December 2014 | January 2015
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