- Production
- Production for helicopters
- Main gearboxes of "Kamov" helicopters
Main gearboxes of "kamov" helicopters
The gearboxes VR-252, VR-226N, main gearboxes VR-80 and intermediate gearboxes PVR-800-1, PVR-800-2 are designed for installation on coaxial helicopters Ka-27/28, Ka-29, Ка-31, Ка-32, Ka-226T, Ка-50, Ка-52, Ка-50-2
The purpose is to transfer power from two engines ТV3-117VМ/VМА (VR-252, VR-80, PVR-800-1,-2), AI-450, Allison, Arrius (VR-226N) to two coaxial rotors and helicopter accessory with the corresponding change of the rotation speed.
The main gearbox circuit is fixed-ratio, planetary (VR-252, VR-80) and multi-flow (VR-226N).
Main technical specifications
| Gearboxes VR-226N (for Arrius-2G1) | Gearboxes VR-252 | Main gearboxes VR-80 | Intermediate gearboxes PVR-800-1,-2 | |
|---|---|---|---|---|
| Gear ratio to main rotors shafts | 0,0472 | 0,01815 | 0,05027 | 0,4150 |
| Input shaft rotation speed, nominal, RPM | 6000 | 15000 | 6231 | 15000 |
Power being transferred by gearbox, h.p.: maximum in single-engine operation mode
|
710 2x580 2х500 |
2425 2х2200 2х1700 |
2400 2х2100 2х1700 |
2400 2100 1700 |
| Mass, kg | 300 | 1025 | 925 | 69 |
Overall dimensions, mm:
|
878 1035 2070 |
1066 1415 3114 |
1130 910 3375 |
625 524 606 |
| Developer | Krasny Octiabr | Klimov Corporation | ||