Which challenge increased when early Chinese armies enhanced simple fire arrows into metal-tube launched 'rocket arrows'?

💡 Explanation

Achieving range and accuracy was difficult, because inconsistent thrust from differential burn rate of the raw gunpowder batches increased the variation in projectile `momentum transfer`, therefore velocity control mattered rather than composition or corrosion in early application.

• Which outcome occurred when the Roman road network experienced settlement?
• Which risk increased for Roman castra (military camps) when constructed on peat soils?
• Which mechanical vulnerability was strategically exploited when using sapping during a siege?
• Which outcome occurred aboard wooden sailing ships when galvanic corrosion contacted iron fastenings near the waterline?
• Which event results from Byzantine dromon fire misfires?
• Which outcome occurred when Inca stonemasons employed interlocking techniques and poorly-drained foundations for suspension bridge towers?