Structures and Composite Materials Department

During the next academic year the Structures and Composite Materials Department will approach the design of various  Rocksanne 2X’s systems.

Rocksanne 2X aims to maximize structural efficiency, acting on the mechanical and technological-constructive aspects regarding the sounding rocket. During the first part of the development of Rocksanne 2X, the department will design and project the various systems that compose the sounding rocket. Subsequently, the optimization proccess will be operated by reducing the footprint and weight, thanks to the acquisition of the new technologies.

The main and the most critical are those related to the motor.

Due to the innovative hybrid solution, the department will focus from the very beginning into the design of a combustion chamber and a reservoir made of a metallic material. In this way there will be a ready to use device for testing of fuels and oxidants. The experimental setup consists of the following subsystems: Tank (cloak plus caps) and Combustion Chamber (mantle, warheads and nozzle).

The activities will proceed in parallel with the development of a propulsion system in composite material. The tank and the combustion chamber in its entirety will be redesigned using preimpregnated carbon fiber, paying particular attention to the thermal insulation. A system of this type would ensure compliance with the conditions of the project which reduces appreciably the weight.

Lilith’s motor case, Rocksanne I-X

Fiber glass fincan of Rocksanne I-X

The metallic and composite systems will be tested statically to verify their resistance to loads of contingency and robustness.

At the end of the development of the metallic motor, we will start with the designigning of the control system intended as verification of its structural integrity.

Finished the work on the motor and control systems, that appear to be the most challenging of the year, we will design the fuselage nose cone. Unlike the motor, in this casewe won’t build the mettalic body for the tests, but we will proceed immediately with the realization of the pieces in composite materials.

A small note must be done for the ogive: because of its realization in the autoclave, it becomes necessary the designigning of a mold in a metallic material on which takes place the dry lamination.

Issues and typical activities
Static structural analysis (stress and strain)
Thermal analysis (temperature profiles)
Dynamic analysis (modes of vibration and frequencies)
Design and dimensioning of the subsystems parts
Manufacture of parts in composite material
Project of test equipment aimed at the validation of subsystems designed
Skills and requirements
Design by virtual prototyping software (SolidWorks)
Basic knowledge of the features of the main machine tools (lathe, milling machine, drill)
Basic knowledge of the main materials for aerospace use (aluminum alloys and composites)

A further design activities flanks that of the missile. It is the will of the department to create a test facility to leave the association for the testing of future propulsion systems.

In the next table, we present you the most significant problems that usually occur to a member of Structures and Composite Materials Department and the related skills that he should have to be able to face them.