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GP25
AIRCRAFT HYDRAULIC SYSTEMS
- Drive generators
- Hydraulic pumps
- Hydraulic plants
- Hydraulic motors
- Hydraulic distributors with electromagnet control
- Hydraulic systems units
DIRECT CURRENT DRIVE GENERATOR GP25
PURPOSE
GP25 is designed to supply an aircraft electrical system with AC electrical power with stable frequency.
SRUCTURE CHARACTERISTICS
Drive generator is composed of a hydro-mechanical drive and AC generator united in the same field ring assembly. Drive consists of a mechanical differential control unit, two sets of the expansion type hydro-machines operating in parallel, regulating system, boost and return pumps, minimal pressure switch, maximum operating temperature switch, and easy removed filter. Each hydro-machine set consists of an adjusting and unadjusting hydro-machines. Minimal pressure switch is used to close the contacts in case when the pressure level in drive generator falls below safety one. Easy removable filter is provided by the magnet filter clogging detector and the cutoff valve which adjusts oil loss to a minimal value.
APPLICATION AREA
Drive generator is used at Il-96-300 and other up-to-date Russian airplanes.
MAIN ENGINEERING CHARACTERISTICS
| Rated power | 60 KW |
| Overloads: - during 5 min - during 5 sec |
90 KW 120 KW |
| Operational rotation range for the main drive shaft at which a given current frequency of generator is provided. | from 4500 r/min to 9000 r/min |
| Voltage of generated 3-phases current |
115/200 V |
| Generator AC frequency in stable operational mode |
400±8 Hz |
| Operating fluid | IPM-10, VNIINP-50-1-4u and foreign analogues |
| Operating fluid temperature | from -60°С to +120°С |
| Environment temperature | from -60°С to +140°С |
| Mass | 43 kg |