.jpg "RU19A-300 Auxiliary power unit © Konstantinos Panitsidis")
In numbers Through the lens Video
The auxiliary turbojet engine is RU19-300 designed to be installed on aircraft as an additional power plant (mainly installed on aircraft of the An-24 (RV), An-26 and An-30 type).
Engine RU19A-300. Right view
The engine provides:
-creation of additional thrust at take-off
-ensuring flight safety in case of failure of one engine
-creation of additional thrust during climbing under hot climate conditions
-on-board starting of the power plant
-increased in-flight power ratio in case of failure of one engine
-aircraft power supply in case of main engine generators failure
-supply of the aircraft power system with electric power at idle main engines at parking.
Structurally, the engine consists of a seven-stage axial compressor with air bypass behind the fourth stage, an annular combustion chamber, a single-stage turbine and a exhaust nozzle.
Compressor rotor (without first stage impeller).
Flame tube combustion chamber
Exhaust nozzle.
Technical specifications
| DESIGNER | KB-300, Gusev Yuriy Ivanovich |
| COUNTRY | Russia (USSR) |
| TYPE |
Turbojet (Auxiliary power unit)
|
| Installed On (aerial means) |
An-24 (RV), An-26, An-30
|
| Fuel | Kerosene T-1, TS-1, T-2 (GOST 10227-62), T-7P (GOST 1-2308-66) and their mixtures. |
| Oil | MK-8, MK-8P (GOST 6457-66) and their mixtures. |
| Maximum thrust take-off power rating | 900 kgf |
| Max thrust, cruise power (H=8.000 m, M=0,75) | 1.600 kgf |
| Specific fuel consumption, cruise power | 1,18 kg/kgf*h |
| Pressure ratio, take-off power rating | 4,6 |
| Bypass ratio | - |
| Temperature of the gas at the turbine intake, take-off power rating | 1.150 K |
| Air flow rate, take-off power rating | 16 kg/sec |
| Compressor rotation frequency low-pressure, take-off power rating | - |
| Compressor rotation frequency high-pressure, take-off power rating | - |
| OVERALL DIMENSIONS | |
| Diameter (maximum) | 552 mm |
| Height (maximum) | 779 mm |
| Width | - |
| Length | 1812 mm |
| WEIGHT | |
| Weight (Dry weight according to GOST 17106-71) | 222 kg |
| Engine weight in delivery condition, no more | 320 kg |
| Specified service life (before the first bulkhead) | 1.500 hour |
Photos RU19A-300 Turbojet (Auxiliary Power Unit)
