Triaxial helicopter

Abstract

A triaxial helicopter includes a fuselage and an airframe, and three rotor modules and a driving source are installed to the airframe, and two turbofans are mounted at the tail of the airframe, and the horizontal elevator is installed between the two turbofans and coupled to the driving source through a link rod module, so that when the triaxial helicopter is operated, the two turbofans are operated to produce a backward airflow to assist propelling the triaxial helicopter to move forward, so as to improve the flying speed of the triaxial helicopter. When it is necessary to ascend or descend the triaxial helicopter, the driving source controls the link rod module to adjust the yaw direction of the horizontal elevator according to an ascending or descending requirement, and the airflow produced by the turbofans blows in a direction with the horizontal elevator to increase the lifting force of the triaxial helicopter.

Claims

1. A triaxial helicopter, comprising a fuselage and an airframe; three rotor modules; a driving source being installed to the airframe, characterized in that two turbofans are mounted at a tail of the airframe; and a horizontal elevator installed between the two turbofans, wherein the horizontal elevator is coupled to the driving source through a link rod module, and the horizontal elevator is disposed within a range of the rotation of a fan blade of each of the turbofan, so that when the triaxial helicopter is operated, the two turbofans are operated to produce an airflow propulsion, and the driving source controls the link rod module to adjust the direction of the horizontal elevator according to an ascending or descending requirement, and the airflow blows in a direction with the horizontal elevator to increase the lifting force of the triaxial helicopter.

2. The triaxial helicopter of claim 1, wherein the driving source is a servo motor.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is an exploded view of a triaxial helicopter of the present invention;

(2) FIG. 2 is a rear view of a triaxial helicopter of the present invention;

(3) FIG. 3 is a schematic view of operating a triaxial helicopter of the present invention;

(4) FIG. 4 is a schematic view of ascending a triaxial helicopter of the present invention; and

(5) FIG. 5 is a schematic view of descending a triaxial helicopter of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

(6) The present invention will become clearer in light of the following detailed description of an illustrative embodiment of this invention described in connection with the drawings.

(7) With reference to FIGS. 1 and 2 for a triaxial helicopter of the present invention, the triaxial helicopter 1 comprises an airframe 11 and a fuselage 12, and three rotor modules 13 and a driving source 14 are installed to the airframe 11, and two turbofans 15 are mounted to the tail of the airframe 11, and a horizontal elevator 16 is installed between the two turbofans 15, and coupled to the driving source 14 through a link rod module 17. In an embodiment of the present invention, the driving source 14 is a servo motor.

(8) In FIG. 3, when the three rotor modules 13 of the triaxial helicopter 1 are rotated and operated to fly forward, the two turbofans 15 at the tail of the airframe 11 blows an airflow backward, so that the triaxial helicopter 1 is propelled to move forward by the backward airflow, without requiring an adjustment of the pitch angle of the airframe 11 or rotor module 13.

(9) In FIG. 4, when it is necessary to ascend the triaxial helicopter, the driving source 14 drives the link rod module 17 to prop the connecting the joint position of the horizontal elevator 16 and the link rod module 17 upward, so that the tail 161 of the horizontal elevator 16 forms an angle tilting downward. Since both ends of the horizontal elevator 16 fall within the operating range of the turbofan 15 and its fan blades, therefore the airflow produced by the operation of the two turbofans 15 blows downward in a direction towards the horizontal elevator 16, so as to adjust the direction of propelling the airflow and air and accelerate ascending the triaxial helicopter 1.

(10) In FIG. 5, when it is necessary to descend the triaxial helicopter 1, the driving source 14 drives the link rod module 17 to pull the joint position of the horizontal elevator 16 and the link rod module 17 downward, so that the tail 161 of the horizontal elevator 16 forms an angle tilting upward. Now, the propelling airflow produced by the operation of the two turbofans 15 blows in an upward direction towards the horizontal elevator 16, so as to adjust the direction of propelling the airflow and air and accelerate descending the triaxial helicopter 1.

(11) In summation, the triaxial helicopter of the present invention has the following effects:

(12) In the triaxial helicopter of the present invention, the airflow produced by the operation of the two turbofans at the tail of the airframe propels the triaxial helicopter to move forward without requiring an adjustment of the pitch angle of the airframe or rotor module, so as to improve the flying speed of the triaxial helicopter and prevent the triaxial helicopter from losing its balance or even crashing due to the rapid forward movement.

(13) In the triaxial helicopter of the present invention, the horizontal elevator is installed between the two turbofans of the triaxial helicopter, and both ends of the horizontal elevator fall within the airflow output range of the turbofan airflow, so that the airflow produced by the turbofans can blow in an upward or downward direction towards the horizontal elevator to increase the lifting force of the triaxial helicopter.

(14) While the invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.