Question The following question has three parts, answer ALL three. Loading…

Question The following question has three parts, answer ALL three. Loading… The following question has three parts, answer ALL three. Loading on a human powered aeroplane is carried by two spars, one spanning the wings and other linking the wings to the tail as shown in Figure 2 below. Image transcription textX Pilot Main spar weight Lift Lift Figure 2 Loading on a human powered aeroplane… Show more     Figure 2       Loading on a human powered aeroplane Both the spars are designed for maximum stiffness at minimum weight. Ignoring the torsional loading and shape factor of the spar. Derive an appropriate material selection index assuming a square cross-section of the spar (beam).  While considering material selection for a rod under pure axial loading and requiring maximum strength at minimum mass; it is suggested that one could simply choose a material with highest value of yield strength to density ratio () regardless of whether the load is tensile or compressive. Critically evaluate this suggestion and explain if the statement is valid or not and if not then what other properties or material indices might be relevant.  Explain the term ‘tailorability of composite material’, using appropriate sketches, equations and examples. Engineering & Technology Mechanical Engineering MECHANISM 246 Share QuestionEmailCopy link