High Speed Dynamometers
The Froude Hofmann range of Aerospace and Gas Turbine Engine Test Equipment has been developed over the years to meet the needs of testing new engines in R&D facilities. These state-of-the-art products are utilised in subsequent production facilities and the engine overhaul sector.
| Model | Max Speed (RPM) | Torque Nm (lb.ft) | Power kW (BHP) | Curve Ref |
|---|---|---|---|---|
| HS125 | 30,000 | 895 (680) | 1,865 (2,500) | M003643 |
| HS150 | 24,000 | 1,185 (875) | 1,860 (2,490) | M000663 |
| HS150-F1 | 24,000 | 1,067 (785) | 900 (1,210) | M002122 |
| HS590 | 15,500 | 4,610 (3,400) | 4,100 (5,500) | M000176 |
| HS690 | 10,500 | 11,075 (8,170) | 7,830 (10,500) | M000177 |
| HS6590 | 9,500 | 19,390 (14,300) | 11,185 (15,000) | M000178 |
| HS790 | 7,500 | 29,665 (21,900) | 14,915 (20,000) | M000179 |
The dynamometers are fitted with two half couplings which, with the rotor, are oil injected onto the shaft. High speed machines have oil mist lubricated bearings.
The dynamometer working compartment consists of special semi-circular shaped vanes cast into stainless steel rotor and stators. Water flowing in a toroidal vortex pattern around these vanes creates a torque reaction through the dynamometer casing which is resisted and measured by a precision load cell. The dynamometer load is controlled by a 'butterfly' water outlet valve, operated by a closed loop electro-hydraulic servo system. The power absorbed by the dynamometer is carried away by the water in the form of heat.
Main Features:
- High speed, up to 30,000 RPM
- Speed measurement accuracy ±1 RPM
- Torque measurement accuracy ±0.25% of full rated torque of dynamometer
- Servo load control
- Rapid response
- Stable operation
- High reliability
- Tandem Machines Available
- Bi-directional Configurations available with the use of a turntable
