Amphibious aircraft
First Claim
1. An airplane comprising:
- a) a fuselage having a longitudinal axis, a vertical axis, and a lateral axis, perpendicular to said longitudinal and vertical axes;
b) a main wing mounted to the fuselage and extending generally laterally therefrom as right and left wing sections c) an engine assembly mounted above said fuselage and spaced upwardly therefrom and having a propeller which defines a propeller area through which the propeller rotates, said propeller creating a rearwardly traveling propeller flow stream;
d) a tail section located at a rear portion of the fuselage and having an aerodynamic surface an/or surfaces to create a vertically aligned aerodynamic force component, said tail section being located rearwardly of said propeller and in the propeller flow stream;
e) a longitudinally extending aerodynamic lift augmenting airplane portion located over the fuselage and providing an upwardly facing aerodynamic lift augmenting surface longitudinally aligned with said propeller flow stream so that at least a portion of said propeller flow stream flows over said lift augmenting surface to create augmented lift;
f) right and left platforms on opposite sides of said fuselage, each platform comprising a main platform portion and a strake having a highly swept leading edge extending from its related main platform portion forwardly along said fuselage.
0 Assignments
0 Petitions
Accused Products
Abstract
An amphibious airplane having an engine assembly mounted at a top center location in the fuselage, and a tail assembly having a horizontal fin in an elevated position so as to be in the propeller air stream. A lift augmenting aerodynamic surface is positioned at the top middle portion of the aircraft fuselage, with the propeller being at the concavely curved rear end of the lift augmenting surface. A pair of platforms are positioned on opposite sides of the fuselage at lower locations adjacent to a passenger section of the aircraft. These platforms are aerodynamically aligned and also have strakes extending forwardly therefrom along opposite sides of the fuselage. In cruise mode, the increased velocity imparted to the propeller air stream acts on the horizontal fin to exert a downward force, with the various forces of the airplane balancing each other. With increased power setting of the engine, the increased velocity of the propeller air stream enables the horizontal tail fin to exert a greater downward force to maintain stable operation of the aircraft.
36 Citations
24 Claims
-
1. An airplane comprising:
-
a) a fuselage having a longitudinal axis, a vertical axis, and a lateral axis, perpendicular to said longitudinal and vertical axes;
b) a main wing mounted to the fuselage and extending generally laterally therefrom as right and left wing sections c) an engine assembly mounted above said fuselage and spaced upwardly therefrom and having a propeller which defines a propeller area through which the propeller rotates, said propeller creating a rearwardly traveling propeller flow stream;
d) a tail section located at a rear portion of the fuselage and having an aerodynamic surface an/or surfaces to create a vertically aligned aerodynamic force component, said tail section being located rearwardly of said propeller and in the propeller flow stream;
e) a longitudinally extending aerodynamic lift augmenting airplane portion located over the fuselage and providing an upwardly facing aerodynamic lift augmenting surface longitudinally aligned with said propeller flow stream so that at least a portion of said propeller flow stream flows over said lift augmenting surface to create augmented lift;
f) right and left platforms on opposite sides of said fuselage, each platform comprising a main platform portion and a strake having a highly swept leading edge extending from its related main platform portion forwardly along said fuselage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. An airplane adapted to take off from and land on a water surface, said airplane comprising:
-
a) a fuselage having a longitudinal axis, a vertical axis, and a lateral axis, perpendicular to said longitudinal and vertical axes, said fuselage having lower water-engaging surfaces being positioned to engage the water surface and provide primary buoyancy force with the airplane in the water;
b) a main wing mounted to the fuselage and extending generally laterally therefrom as right and left wing sections c) an engine assembly mounted above said fuselage and spaced upwardly therefrom and having a propeller which defines a propeller area through which the propeller rotates, said propeller creating a rearwardly traveling propeller flow stream;
d) a tail section located at a rear portion of the fuselage and having an aerodynamic surface an/or surfaces to create a vertically aligned aerodynamic force component, said tail section being located rearwardly of said propeller and in the propeller flow stream;
e) a longitudinally extending aerodynamic lift augmenting airplane portion located over the fuselage and providing an upwardly facing aerodynamic lift augmenting surface longitudinally aligned with said propeller flow stream so that at least a portion of said propeller flow stream flows over said lift augmenting surface to create augmented lift;
f) said fuselage having a passenger section with an access location by which a pilot and/or a passenger can move into and from said passenger section, said airplane comprising substantially horizontally aligned platform section extending laterally from said fuselage adjacent to said access location;
g) said lift-augmenting surface having in transverse cross-section a concavely curved portion of said lift-augmenting surface, said propeller being located adjacent to said concavely curved portion, so that at least a portion of said propeller flow stream flows over said concavely curved portion to enhance augmented lift. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
-
Specification