Pneumatic bladder aerodynamic device

A vehicle including a rear spoiler system, the rear spoiler system comprising:

• a fluid supply system;
• an elastic bladder in fluid communication with the fluid supply system, receiving a fluid delivered by the fluid supply system, confining the fluid, and dilating upon an increase in a pressure inside the bladder resulting from an increase in an amount of the fluid confined in the bladder and/or contracting upon a decrease in the pressure inside the bladder resulting from a decrease in the amount of the fluid confined in the bladder, wherein a surface of the bladder defines an outer, exposed, and visible surface of the vehicle;
• and
• a frame arranged inside the bladder, defining a shape of the bladder, and moving with the bladder when the bladder dilates and contracts, wherein at least one side of the frame does not move with respect to the vehicle when the bladder is dilating and contracting, and a rear side of the frame moves with respect to the vehicle when the bladder is dilating and contracting, and further wherein when the bladder is dilating, the rear side bends upward forming an upward arc with an apex of the upward arc arranged between two ends of the rear side, and wherein when the bladder is contracting, the rear side bends downward.

A rear spoiler system configured to attach to a vehicle, the rear spoiler system comprising:

• a fluid supply system including a compressor;
• an elastic bladder in fluid communication with the fluid supply system via an aperture extending through a wall of the bladder, the bladder receiving a fluid delivered by the fluid supply system and confining the fluid in an enclosed volume defined by the bladder, wherein the bladder dilates upon an increase in a pressure inside the bladder resulting from an increase in an amount of the fluid confined in the bladder and contracts upon a decrease in the pressure inside the bladder resulting from a decrease in the amount of the fluid confined in the bladder, and wherein an upper surface of the bladder defines an outer, exposed, and visible surface of the vehicle, wherein the upper surface of the bladder has the same aesthetic appearance as an adjacent surface of a boot of the vehicle;
• and
• a frame arranged inside the bladder and connected to an inside surface of the bladder, wherein the frame is more rigid than the bladder and supports the bladder against airflow, and wherein the frame defines a shape of the bladder and moves with the bladder when the bladder dilates and contracts.