A protective aviation garment is designed to protect a crewmember during flight. The garment includes a bladder layer which retains a pressurized fluid and applies pressure to the user. The bladder layer is semi-permeable, being impermeable to both oxygen and nitrogen and permeable to water vapor. A first fluid tube is formed as part of the bladder layer to deliver the pressurized fluid to the interior of the bladder layer. A cover layer is formed from a fire-retardant fabric surrounding the exterior of the bladder layer. The cover layer is sealed around the first fluid tube and allows the first fluid tube to pass therethrough. The thigh seals are configured to seal the bladder layer to the user such that the bladder layer forms a lower volume and an upper volume. The first fluid tube delivers the first pressurized fluid to the lower volume.

The anti-G trousers are partially double-walled and partially single-walled and made from an air-permeable, tear-resistant, refractory and stretch-resistant synthetic textile material of max. 130 gram/m.sup.2. In the double-walled areas, airtight pockets (13, 18, 34, 35) are thereby formed which act as pneumatic muscles and contract when being inflated from an automatic pressure supply and thereby draw the adjacent single-layer textile pieces towards one another. In this way, pressure is applied all over the surface of the pilot's body. The pockets (34) on the outer sides of the trouser legs extend upwards against the lower abdomen into a respective pouch-type bubble (13) and are connected to the pockets (35) for the inner sides of the trouser legs via an inguinal channel (18). The pockets (34) communicate on the rear side of the trousers via a connection channel. From here, in the lower back region, a coccyx channel extends downwards between the buttocks of the wearer. The front sides and rear sides of the trouser legs remain textile strips (14). They are breathable and allow for the discharge of body heat.

Provided is a G tolerance improvement device provided with: an estimation unit that estimates either or both of a body fluid volume in the head of a user and a change amount of the body fluid volume; and a pressurization unit that applies pressure to the user on the basis of either or both of the body fluid volume and the change amount estimated by the estimation unit.

Provided is a G tolerance improvement device provided with: an estimation unit that estimates either or both of a body fluid volume in the head of a user and a change amount of the body fluid volume; and a pressurization unit that applies pressure to the user on the basis of either or both of the body fluid volume and the change amount estimated by the estimation unit.

Acceleration protective trousers or G-protective trousers are double-walled forming airtight compartments. The trousers include an air-permeable, tear-resistant, fire-resistant and low-stretch synthetic textile material, and the trousers are provided with compartments which can be inflated into a circular cross-section. These compartments act as muscles by two opposite edges being pulled together and the adjacent pieces of textile material being stretched. These compartments extend along the trouser legs and are connected at the upper end of the trouser legs. The compartments on the outer sides of the trouser legs extend upwards from the groins and terminate in a bag-like bladder towards the lower abdomen. On the rear side of the trousers they communicate with one another via a connecting channel. A coccyx channel branches off downwards and extends towards the crotch. The compartments communicate via at least one hose with raccord with an automatically meterable compressed air supply.

A protective aviation garment is designed to protect a crewmember during flight. The garment includes a bladder layer which retains a pressurized fluid and applies pressure to the user. The bladder layer is semi-permeable, being impermeable to both oxygen and nitrogen and permeable to water vapor. A first fluid tube is formed as part of the bladder layer to deliver the pressurized fluid to the interior of the bladder layer. A cover layer is formed from a fire-retardant fabric surrounding the exterior of the bladder layer. The cover layer is sealed around the first fluid tube and allows the first fluid tube to pass therethrough. The thigh seals are configured to seal the bladder layer to the user such that the bladder layer forms a lower volume and an upper volume. The first fluid tube delivers the first pressurized fluid to the lower volume.

A protective aviation garment is designed to protect a crewmember during flight. The garment includes a bladder layer which retains a pressurized fluid and applies pressure to the user. The bladder layer is semi-permeable, being impermeable to both oxygen and nitrogen and permeable to water vapor. A first fluid tube is formed as part of the bladder layer to deliver the pressurized fluid to the interior of the bladder layer. A cover layer is formed from a fire-retardant fabric surrounding the exterior of the bladder layer. The cover layer is sealed around the first fluid tube and allows the first fluid tube to pass therethrough. The thigh seals are configured to seal the bladder layer to the user such that the bladder layer forms a lower volume and an upper volume. The first fluid tube delivers the first pressurized fluid to the lower volume.

An aircrew ensemble comprising a garment (20, 21) for covering at least a part of a body of a wearer and an inflatable counter-pressure bladder (33, 41), carried by the garment (20, 21). The inflatable counter-pressure bladder (33, 41) is formed from a moisture permeable material allowing the passage therethrough of perspiration from the wearer's body.

An inflatable bladder configured to be carried by an aircrew garment worn on the body of the aircrew and to apply pressure to the body when inflated by a gas to counteract effects of high G-forces during flight. the bladder includes a gas-permeable material allowing the passage of the gas therethrough to cool the body