ACES II ejection seat Ballistic Powered Inertia Reel (K‑ BPIR) is a torso
restraint haul‑back device that, by means of a ballistic charge (gas
generator), forcefully retracts a pilot firmly against his seat back
It is designed as a direct replacement assembly for aircraft that use
the ACES II ejection seat (i.e. A‑10, B‑1, B‑2 F‑15, F‑16, F‑22, and
F‑117.) The K‑ BPIR has been demonstrated to require no seat or aircraft
modifications for installation. K‑BPIR performance is well within the
minimum specification requirements of MIL‑R‑ 8236 and has been demonstrated
to be very repeatable.
This reel is fully supported by Koch to insure customer satisfaction
and has a predicted ten‑year operational life.
The H. Koch & Sons Ballistic Powered Inertia Reel is designed to
fit into the ACES II ejection seat installed in A‑10, B‑1, B‑2,
F‑15, F‑16, F‑22 and F‑117 aircraft.
It is currently in the process of component Qualification by the US
Air Force and Goodrich Corporation.