The DECA\u00a0rocket was\u00a0launched. The details are given in the launch report<\/a>.<\/p>\n <\/a><\/p>\n This rocket was designed to be propelled by the 4 grain – DECA motor. Evaluating several designs, long and hard thought has gone into the basic design. The design goals: modular, simple, easy to construct\u00a0yet very effective minimum diameter rocket.<\/p>\n First is was decided that the rocket would need a dual stage\u00a0recovery because it would not be much more complex than a single stage recovery and the rocket has the potencial to reach high altitudes. I liked the simplicity of a drogueless descent and the fact that the rocket is broken up into several pieces connected with tubular kevlar thereby reducing\u00a0its inertia.\u00a0Although the drogueless descent means a relative high vertical descent, it has\u00a0the benefit that the uncontrolable horizontal speed is almost completely eliminated. Therefore for the\u00a0first stage of the recovery the\u00a0rocket will\u00a0break up\u00a0at apogee near the\u00a0motor coupler and for the main parachute\u00a0to deploy the nose cone will be ejected.<\/p>\n Electronics \/ payload compartment would be between the motor and the main parachute.\u00a0The compartment sealed and protected from hot ejection gassed\u00a0by means of\u00a0o-rings located at each end. I did not wanted to secure the floating b<\/p>\n The entire harnass is constructed\u00a0out of 3-4mm tubular kevlar with M6 stainless steel eye bolts.<\/p>\n Apogee break up at the motor, main deployed with nose cone popping off.<\/p>\n Weight<\/p>\n Total weight excl propellant: 3000gr & 3600gr incl propellant<\/p>\n Both the apogee as well as the main parachute charge\u00a0consisted out of a straw filled with\u00a01,0gr\u00a0of 3F commercial BP<\/p>\n 54mm, DECA rocket, drogue separation test – 27.08.09<\/a><\/p>\nSpecification \/ Pre-launch documents for NERO use<\/h3>\n
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Design \/ construction<\/h3>\n
Pre-launch documents various:<\/h3>\n
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After launch analysis:<\/h3>\n
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DECA ejection charge ground test<\/h3>\n