Which munition's rocket motor incorporates an internal Ignition Safety Device (ISD)?

Which munition's rocket motor incorporates an internal Ignition Safety Device (ISD)?

• A. AIM-9X-2
• B. AIM-7 Sparrow
• C. AIM-120 AMRAAM
• D. AGM-65 Maverick

Answer: (A)

The main idea here is how a rocket motor is kept from igniting by accident during handling and integration. An Ignition Safety Device prevents any unintended ignition unless the weapon is properly armed and the correct arming signals are present. When this device is built into the motor itself—an internal ISD—the safety mechanism is part of the motor assembly, providing robust protection against misfires during carriage, loading, or handling in demanding flight environments. The AIM-9X-2 employs this internal ISD in its solid rocket motor. This design helps ensure the motor can only ignite when the missile is in the correct armed state, which is crucial for a high-velocity, short-range air-to-air missile that undergoes rigorous handling and deployment conditions. The other missiles listed use different safety architectures for their propulsion systems, and they do not rely on an internal ISD in the motor in the way described for the AIM-9X-2.

The main idea here is how a rocket motor is kept from igniting by accident during handling and integration. An Ignition Safety Device prevents any unintended ignition unless the weapon is properly armed and the correct arming signals are present. When this device is built into the motor itself—an internal ISD—the safety mechanism is part of the motor assembly, providing robust protection against misfires during carriage, loading, or handling in demanding flight environments.

The AIM-9X-2 employs this internal ISD in its solid rocket motor. This design helps ensure the motor can only ignite when the missile is in the correct armed state, which is crucial for a high-velocity, short-range air-to-air missile that undergoes rigorous handling and deployment conditions.

The other missiles listed use different safety architectures for their propulsion systems, and they do not rely on an internal ISD in the motor in the way described for the AIM-9X-2.