What are the two types of go-no-go fuses?

• A. Absorbent type and expansion type
• B. Thermal type and magnetic type
• C. Mechanical type and electrical type
• D. Passive type and active type

Answer: (A)

Go-no-go fuzes are evaluated by using two distinct design approaches that determine whether a fuse arms within the specified tolerances. The absorbent type relies on a material inside the fuse that absorbs the initiating energy. If the fuse is out of tolerance, the absorbed energy prevents the arming action from occurring, giving a no-go. If the fuse is within spec, the energy is managed so arming proceeds, giving a go.

The expansion type uses a calibrated element that expands under the test conditions. When the fuse is within spec, the expansion remains within limits and arming occurs. When the fuse is out of spec, the expansion disrupts the mechanism and prevents arming, yielding a no-go.

These two methods—the energy-absorbing approach and the mechanically expanding approach—are the established categories for go-no-go fuzes. Other terms describe different triggering or general classifications that don’t define how go-no-go evaluation is accomplished.