Dual rotor helicopter with tilted rotational axes
First Claim
1. A rotary wing aircraft apparatus comprising:
- a body;
an arm connected to the body at a first end thereof and a rotor pair connected to an opposite second end of the arm;
the rotor pair comprising an upper rotor driven by an upper motor and rotating about an upper rotor axis and a lower rotor driven by a lower motor and rotating about a lower rotor axis;
wherein the upper and lower rotor axes are tilted with respect to each other.
3 Assignments
0 Petitions
Accused Products
Abstract
A rotary wing aircraft apparatus includes a body and a rotor pair connected to the body by an arm. The rotor pair has an upper rotor driven by an upper motor and rotating about an upper rotor axis and a lower rotor driven by a lower motor and rotating about a lower rotor axis. The upper and lower rotor axes are tilted with respect to each other. Tilting the axes away from the arm increases the distance from the rotor blades to the arm, and decreases the risk of the blades of the rotor contacting the arm. In an aircraft with a plurality of arms extending from the body, and a rotor assembly connected to each arm, the arms can be pivoted from a flying position, where the arms extend laterally outward to a folded position where the arms are positioned substantially parallel and adjacent to each other.
-
Citations
21 Claims
-
1. A rotary wing aircraft apparatus comprising:
-
a body; an arm connected to the body at a first end thereof and a rotor pair connected to an opposite second end of the arm; the rotor pair comprising an upper rotor driven by an upper motor and rotating about an upper rotor axis and a lower rotor driven by a lower motor and rotating about a lower rotor axis; wherein the upper and lower rotor axes are tilted with respect to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A rotary wing aircraft apparatus comprising:
-
a body; a plurality of arms extending laterally from the body and a rotor pair connected to an opposite second end of the arm, and a rotor assembly connected to an outside end of each arm, the rotor pair comprising an upper rotor rotating about an upper rotor axis and a lower rotor rotating about a lower rotor axis; wherein the arms are connected to the body such that the arms can be pivoted from a flying position, where the arms extend laterally outward from the body such that the rotor assemblies are spaced in a desired configuration, to a folded position where the arms are positioned substantially parallel and laterally adjacent to each other in substantially the same plane; and at least three rotor assemblies each attached to the body by an arm, each arm positioned so the rotor assemblies are positioned substantially at the corners of an equilateral triangle, and a clip bracket extending laterally right and left from a front end of a rear arm, and right and left clips on corresponding right and left ends of the clip bracket, wherein the clip bracket is configured such that right and left front arms are releasably engaged in the corresponding right and left clips when in the flying position. - View Dependent Claims (15, 16, 17, 18, 19)
-
-
20. A rotary wing aircraft apparatus comprising:
-
a body; a plurality of arms extending laterally from the body, and a rotor assembly connected to an outside end of each arm; wherein the arms are connected to the body such that the arms can be pivoted from a flying position, where the arms extend laterally outward from the body such that the rotor assemblies are spaced in a desired configuration, to a folded position where the arms are positioned substantially parallel and laterally adjacent to each other in substantially the same plane; four rotor assemblies, each rotor assembly attached to the body by an arm, each arm positioned approximately ninety degrees around a central axis from an arm supporting an adjacent rotor assembly; wherein right and left front arms extend forward and to sides of the body and right and left rear arm extends rearward and to sides of the body when the apparatus is in a flying position; and wherein the right and left front and rear arms are pivotally connected to the body such that the right and left rear arms can be pivoted rearward to a folded position extending rearward, and the right and left front arms can be pivoted rearward to a folded position extending rearward with one front arm on each side of the folded rear arms and substantially parallel to and adjacent to the rear arms. - View Dependent Claims (21)
-
Specification