In the field of launch vehicles, explosive bolts are commonly used for this purpose. However, these are not cheap. They significantly increase the manufacturing cost of the missile.
@Goenitz
Regarding the price of explosive bolts, here is a publicly available and credible news report.
Last year, a privately owned company successfully tested the YKJ-1000 hypersonic missile. They released a cost analysis of the missile. This is one of the charts from that report.
Brief translation:
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Explosive bolt, price per unit: 22,000 RMB
Factory price: 15,000 RMB
Transportation cost: 2,500 RMB (It is a hazardous material, so transportation costs are extremely high)
Sampling inspection cost: 4,500 RMB (3 out of every 13 explosive bolts are subject to sampling inspection and subsequently scrapped, so the cost is amortized across the remaining bolts)
Production cycle: 5 months
Production restrictions: Requires a special permit due to being a hazardous material.
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The company uses electrically insulated bolts. manual production. The unit price is 8,000 RMB.
Factory price: 8,000 RMB
Transportation cost: 0.001 RMB
Sampling inspection cost: 0.0001 RMB
Production cycle: 100 units per month
Production limitations: None.
* If this product is mass-produced in large quantities, the unit price will be 2,000 RMB, and 10,000 units can be produced per month.
* This product can be reused 100 to 1000 times.
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@Goenitz You should have a general idea by now, right? A single missile requires multiple explosive bolts.