Military Launch Research Articles

The role of Banu Abd al – Ashhal in the era of Caliph Abu Baker al-Siddiq (peace be upon him) ( 11AH – 13 AH / 632AD - 634 AD)

This research deals with the study of Banu Abd al-Ashhal, one of the most important and largest clans of the Aws al-Ansari tribe, and their role during the era of Caliph Abu Bakr al-Siddiq (may God be pleased with him). It may include their participation in the Islamic army to fight the Romans in the first military launch after the death of the Prophet (peace and blessings of God be upon him). The research also included a study of the heroic role presented by Banu Abd al-Ashhal in the wars of apostasy, the most dangerous movements that confronted the complete Islamic state, and also included a study of their great role in collecting and preserving the Holy Qur’an from loss. The battles against the polytheists, including the battle of Ajnaden and the battle of Marj al-Safar.

Extended NGM (1,1,K) Model and its Application to Spectral Prediction of Military Launch Vehicle Hydraulic System

The extended NGM (1,1,K) grey forecasting model had the defined type and white type mismatching problem. It proposed the extended NGM (1,1,K) model to eliminate the inherent bias caused by mismatch, the model also had given the prediction formula. Compared to the GM (1,1) model, the extended NGM (1,1,K) model had higher fitting and forecasting accuracy. The model was applied to spectrum prediction of Fe concentration of the oil in a certain type of military launch vehicle hydraulic system, it could determine the working status of the hydraulic system effectively combined with Fe concentration thresholds, the result show that the model is effective.

Study on Mechanical Wear State in Military Launch Vehicle Hydraulic System with Knowledge Discovery from Analytical Ferrography

Knowledge discovery model of making-decision table was established based on rough set theory and the wearing characteristics of the military launch vehicles hydraulic system. Compatibility relationship of the incomplete information system was used to achieve knowledge discovery from decision-making tables. Incomplete information systems knowledge representation which based on attribute reduction had been simplified, it had obtained simple and intuitive decision rules. The rules indicated that only monitor the normal wearing debris and non-ferrous debris in hydraulic oil could determine the wear state of the hydraulic system.