| Summary: | 碩士 === 中正理工學院 === 應用化學學系研究所 === 86 === In this investigation, there are four types of stick propellants
,i.e.,M31A1E1,M31A1,M6 and M30 were studied. These propellants
contain three typesof geometries. Which are 1-perforated cylinder,
7-perforated cylinder andslotted tube respectively. This research
fields in these propellants includefour parts as following : the
propellants'' thermodynamic properties, the combustion phenomena
of propellants, the simulation and analysis in interior ballistics
; and the affection of propellants'' charge weight and loading
density on the ballistic performance. The properties of the
theoretical thermodynamic equilibrium were calculated using CET86
and BLAKE computer code.The combustion performance were computed
using the experimental combustiondata in a closed bomb incorporated
with the computer code of BallisticsResearch Laboratory in Closed
Bomb (BRLCB). The interior ballistic characteristicfor various
propellants were analyzed by means of the "Interior Ballistics of
High Velocity Guns" computer code (IBHVG2),respectively. All of the
above stickpropellants'' interior ballistics performance were
calculated in the M198/155mmor M68/105mm cannon. The variations
of interior ballistics performance werestudied by means of
systematical changing the quantity of propellants'' charge weight
and loading density. The results reveal that the M31A1E1 slotted
tube propellants'' burning rate is faster than 1-perforated cylinder
propellants'' burning rate. The shorter the stick propellant is,
the faster the burning rateis. How ever, owing to the degressive
burning in slotted tube propellant, itsburning rate is not fast
enough and require further promote its performancein the future.
The variations of propellants'' charge weight and loading density
do not significantly affect the interior ballistic performance.
The stick propellants'' burning rates characteristics plays an
important role on the bullet''s initial speed and chamber pressure.
A major part of propellants'' qualityis decided by this burning
rate characteristics. Although the variations of propellants
geometries change the bullet initial speed in experimental results,
it is hard to obtain these results from theoretical calculation
directly. Thetheoretical calculation must be incorporated with a
closed bomb''s experimentaldata. Then, the propellant''s burning
rate can be found out. In the future investigation in propellants,
we must correlate the relationship between theirmanufacturing
condition and the analysis in performance. The experimental
results are incorporated with BRLCB and IBHVG2 computer code to
analyze their combustioncharacteristics and interior ballistic
performance. This technique is not onlyhelp us to develop the
propellants with higher performance in the near future,but also
promote the manufacture and design potential in the propellants.
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