Kahn - Model 404 - Cavitation Free Flange-Mounted Hydraulic Dynamometers
For high-speed turboshaft engines and experimental turbines, we offer the Kahn Series 404 dynamometers. Equipped with smooth disc power elements that absorb power by viscous shear rather than through highly turbulent vortex formation, the Series 404 are the only high-speed hydraulic dynamometers in their power class which carry a 5000 hour/60 month warranty against cavitation damage. Operating experience in the field has shown that the actual life of the power elements is well in excess of 10,000 operating hours. In addition to dynamometers, we offer engine test stands and inertia flywheels for turboshaft and turboprop engines; also available are mounting adapter kits for auxiliary power units, power takeoffs and accessory gearboxes.
DESIGN BENEFITS
When operating at high rotational speed and high power density, conventional vaned rotor or perforated disc hydraulic dynamometers are plagued by severe cavitation erosion, which, in many instances, has led to the complete deterioration of the power elements within only a few hundred operating hours.
Equipped with smooth-disc power elements which absorb power by viscous shear rather than through highly turbulent vortex formation, the Kahn Series 400 hydraulic dynamometers inherently discourage cavitation inception, thereby eliminating the need for frequent replacement of the power elements.
Designed and built to meet the most demanding test requirements, the Kahn Series 400 dynamometers offer a number of important design benefits:
- Cavitation-free, smooth-disc power elements provide a service life in excess of 10,000 operating hours, saving money and downtime.
- Inherently steep, open-loop torque-speed characteristic assures stable steady-state operation.
- Low moment of inertia and small working water volume permit rapid transient response.
- Inherently low minimum power absorption characteristic permits performance of transient load bursts originating at near zero load.
- Smooth-disc power elements absorb full power in both directions of rotation.