FIELD: aircraft engineering.
SUBSTANCE: invention relates to the field of aviation, in particular to rotorcraft support structures. High-speed twin-screw helicopter of the coaxial scheme contains the main reducer pushing the screw. Lower rotor is made with a diameter smaller than the diameter of the upper main rotor, while the area of the feathered portion of the blades of the lower main rotor is the same as that of the upper rotor. Main reducer is designed so that the circumferential speeds of the ends of the blades of the lower main rotor and the upper rotor are the same.
EFFECT: provides an increase in the efficiency of the helicopter carrier system.
1 cl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MULTIROTOR UNMANNED HIGH-SPEED HELICOPTER | 2015 |
|
RU2598105C1 |
| UNMANNED CONVERTIBLE HIGH-SPEED HELICOPTER | 2015 |
|
RU2601470C1 |
| FAST-SPEED COMBINED HELICOPTER | 2016 |
|
RU2610326C1 |
| HIGH-SPEED HELICOPTER WITH PROPULSION-STEERING SYSTEM | 2016 |
|
RU2629478C2 |
| HIGH-SPEED AMPHIBIOUS ROTORCRAFT | 2016 |
|
RU2627965C1 |
| HIGH-SPEED HYBRID HELICOPTER-AIRCRAFT | 2017 |
|
RU2652863C1 |
| HIGH-SPEED HELICOPTER WITH CROSSED SCREWS | 2016 |
|
RU2636826C1 |
| UNMANNED HIGH-SPEED HELICOPTER-AIRPLANE | 2017 |
|
RU2664024C2 |
| MULTI-PURPOSE TWO-FUSELAGE HELICOPTER AIRCRAFT | 2017 |
|
RU2650258C1 |
| HIGH-SPEED HELICOPTER-AMPHIBIOUS AIRCRAFT | 2017 |
|
RU2655249C1 |
