Abstract:
An aircraft airbag inflation system includes an airbag mounted on an external surface of an aircraft. The airbag is configured to inflate in one of multiple stages prior to the aircraft crashing, and each stage is associated with a respective pressure. The system also includes multiple sensors disposed on-board the aircraft and configured to sense aircraft velocities and an aircraft attitude. The system also includes a controller disposed on-board the aircraft and configured to receive multiple signals from the sensors, the multiple signals representing the aircraft velocities and the aircraft attitude sensed by the sensors, determine a crash event for the aircraft based on the received multiple signals, the crash event including an aircraft sink rate, an aircraft attitude at crash time, and an aircraft distance from the impact surface, and determine a stage at which the airbag is to be inflated based on the crash event.
Abstract:
A crash attenuation system has an airbag inflatable generally adjacent to an exterior of the aircraft. The system includes a gas generator in fluid communication with an interior of the airbag. The system also includes a vent system having a vent passage supported by the aircraft, the vent passage being configured to allow gas to escape from within the airbag during an impact to a second set of airbags for flotation. The vent system also includes an actuator door for sealing the vent passage, thereby preventing gas from leaving the airbag. The actuator door is actuated by an actuator, the actuator being in fluid communication with the gas generator through an actuator duct. The system operates such that deployment of gas from the gas generator causes the actuator to inflate, thereby causing the actuator door to seal the vent passage. The gas generator is configured to re-inflate the airbag after the actuator door seals the vent passage.
Abstract:
According to one embodiment, a rotorcraft front windshield comprises an optically-transparent material having a non-uniform thickness profile such that the front windshield is a first thickness at a first position and a second thickness at a second position, the first thickness being different from the second thickness.
Abstract:
According to one embodiment, a rotorcraft front windshield comprises an optically-transparent material having a non-uniform thickness profile such that the front windshield is a first thickness at a first position and a second thickness at a second position, the first thickness being different from the second thickness
Abstract:
A crash attenuation system has an airbag inflatable generally adjacent to an exterior of the aircraft. The system includes a gas generator in fluid communication with an interior of the airbag. The system also includes a vent system having a vent passage supported by the aircraft, the vent passage being configured to allow gas to escape from within the airbag during an impact to a second set of airbags for flotation. The vent system also includes an actuator door for sealing the vent passage, thereby preventing gas from leaving the airbag. The actuator door is actuated by an actuator, the actuator being in fluid communication with the gas generator through an actuator duct. The system operates such that deployment of gas from the gas generator causes the actuator to inflate, thereby causing the actuator door to seal the vent passage. The gas generator is configured to re-inflate the airbag after the actuator door seals the vent passage.