- 期刊
- OpenAccess
砲式氣壓水箭新型發射系統之研發
R&D of Novel Gun/Waterjet Rocket Launching System
摘要
本研究之砲式氣壓水箭含中柱的閃崩式強扣快脫發射系統，乃應用先進之「先砲後火箭」的推進理論設計，利用優力膠製作的彈性防漏基座與一體成形之發射中柱，即?可與噴口精密配合的發射導桿，可利用「外砲彈」效應獲得相當大的初速，因此與傳統水箭發射器比，可大幅提升推進效率，並可一舉解決傳統的氣壓水箭發射器諸多先天缺失。此外配合先前所提出的拉氏雷諾輸送公式、動量方程式、火箭總動力功率通化公式等，本文對砲式氣壓水箭系統進行推進性能之理論／數值分析及試驗，包含諸多易調的重要參數如內壓力、箭體內氣液比、噴口大小、箭體形狀／空阻、與發射器條件等。又因構造簡單、成本低廉，故可作?印證及提升傳統火箭推進效率的優良實驗工具，具有探討噴射理論之高度學術價值。
並列摘要
The research is focused on gun/waterjet rocket and its launcher with flash-collapsible locking mechanism. To make use of the advanced ”first gun, second rocket” propulsion theory, we select PU as material for launcher base and associated extruding mid-rod matching well with nozzle as the launching guide to gain some initial rocket velocity by outer-shell effect. In this manner, we can dramatically improve the propulsion efficiency of conventional waterjet rocket and solve its many inherent troublesome problems. Moreover with the aid of our earlier Lagrangian Reynolds transport equation, momentum equation and rocket generalized total kinetic power equation, we analyze and test the propulsion performance of this novel launching system, including a few easily adjustable key parameters such as internal pressure, air/water ratio, nozzle size shape/air resistance, launcher conditions and etc. Due to simplicity, low-cost and abundance of these easily adjustable parameters, this launching system shows high value for academic propulsion research and provide important revelations for futuristic aerospace innovative launch modes.