FIELD: aircraft engineering.
SUBSTANCE: invention relates to aircraft engineering, in particular, to propellers blades designs. Turbomachine with fan without fairing comprises two coaxial and counterrotating propellers (7, 8), having plurality of blades (11A, 11B). Input fan (11A) blades have means (16, 16A, 16B) intended for single arrangement for implementation of local disturbance during propeller (7) rotation, distribution of circulation around blades (11A). Disturbance means contain single expansion (16, 16A, 16B) made on blade (11A) front edge (17), wherein single expansion (16, 16A, 16B) position is defined by its position along width h so, that 0.75H<h<0.85H, where H is blade (11A) height. Decreased noise generated by turbomachine.
EFFECT: disclosed is propellers blades design.
4 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PROPELLER BLADE FOR TURBO-MACHINE | 2013 |
|
RU2645180C2 |
| PROPELLER BLADE, PROPELLER, AIRCRAFT AND METHOD | 2013 |
|
RU2524757C1 |
| TURBOMACHINE WITH SLAT FOR FLOW SEPARATION, HAVING GEAR PROFILE | 2019 |
|
RU2780265C2 |
| METHOD AND SYSTEM OF AERO/HYDRODYNAMIC CONTROL OF NEWTONIAN FLUID FLOW IN RADIAL TURBOMACHINE | 2013 |
|
RU2642203C2 |
| PROFILED AERODYNAMIC STRUCTURE AND TURBOMACHINE FOR AIRCRAFT (OPTIONS) | 2019 |
|
RU2782555C2 |
| BLADE, PARTICULARLY ADJUSTABLE-PITCH BLADE, PROPELLER WITH SUCH BLADE AND TURBOMACHINE | 2012 |
|
RU2590766C2 |
| BIFURCATED CONJUGATED WINGLETS | 2015 |
|
RU2698502C2 |
| PROPELLER BLADE | 2018 |
|
RU2705373C1 |
| MULTI-CIRCUIT PROPELLER BLADE | 2021 |
|
RU2767574C1 |
| PROPELLER BLADE | 1991 |
|
RU2015062C1 |
