The invention relates to a triggerable holding device (10) for a tensioning means (12) of an airbag, comprising a holder (14), a locking member (16) that is movably supported in the holder (14) and that is shiftable between a locking position in which it keeps the tensioning means (12) locked and a release position in which the tensioning means (12) is released, a pyrotechnical device (22) which is coupled to the locking member (16) so that, when the pyrotechnical device (22) is activated, it is shifted from the locking position to the release position, and a restraining device (38) which is tightly connected to the locking member (16) and which, in the release position of the locking member (16), interacts with a restraining geometry (40) within the holder (14) to hold the locking member (16) in its release position within the holder (14).

Pyrotechnic devices and firing mechanisms for aircraft canopy jettison are disclosed herein. An example firing mechanism includes a housing defining a first bore, a second bore, and a channel between the first bore and the second bore, a primary charge disposed in the second bore, a closure disc between the second bore and the channel, and a firing pin assembly disposed in the first bore. The firing pin assembly includes a percussion primer and a firing pin piston including a piston body, a firing pin extending from the piston body, and a piercing pin extending from the piston body. In response to a firing signal, the firing pin piston is moved toward the primary charge such that the piercing pin punctures the closure disc and the firing pin engages the percussion primer to ignite the primary charge.

Pyrotechnic devices and firing mechanisms for aircraft canopy jettison are disclosed herein. An example firing mechanism includes a housing defining a first bore, a second bore, and a channel between the first bore and the second bore, a primary charge disposed in the second bore, a closure disc between the second bore and the channel, and a firing pin assembly disposed in the first bore. The firing pin assembly includes a percussion primer and a firing pin piston including a piston body, a firing pin extending from the piston body, and a piercing pin extending from the piston body. In response to a firing signal, the firing pin piston is moved toward the primary charge such that the piercing pin punctures the closure disc and the firing pin engages the percussion primer to ignite the primary charge.