Conference Session

Aerospace Division Technical Session 1

Collection

2014 ASEE Annual Conference & Exposition

Authors

Scott L. Post, Bradley University

Tagged Divisions

Aerospace

. Page 24.1094.5 • The Range Safety Officer activated the auto-destruct systems on both SRBs 110 s after launch (36 s after explosion).Note that these times after launch corresponds to the time of “max q”, where q is the commonlyused symbol in aerospace engineering for the dynamic pressure: ! 𝑞 = !𝜌𝑉 !While the space shuttle continues to accelerate as it reaches orbit until its fuel is burned out, theatmospheric density, ρ, decreases with increasing altitude, so that there is a unique point whereq, and the total aerodynamic loading on the shuttle, is maximized.The Presidential Commission on the Space Shuttle Challenger Accident (commonly

Conference Session

Aerospace Division Technical Session 2

Collection

2014 ASEE Annual Conference & Exposition

Authors

Rajnish Sharma, University of Maryland, Eastern Shore; Abhijit Nagchaudhuri, University of Maryland, Eastern Shore

Tagged Divisions

Aerospace

obtained values of  and n .b) Find the state-space formulation of the third order system and evaluate the stability of the system. Justify the same for the second order system as obtained in part (i).c) For the third order system mentioned above, determine the optimal control law that minimizes the performance index, J as follows:  J   ( xT Qx   T R )dt with respect to some suitable choices of the matrices Q and R. Page 24.709.7 0Problem 3[Problem 15.2 REF. [4] Engineering Computations and Modeling in Simulink by Yakimenko] Fig. 2 SKETCH OF DYNAMICAL SYSTEM for PROBLEM 3d