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2 Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics

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Meleager and unicorn - student projects on small unmanned aerial vehicles

Brodzka A., Amborski J., Kuliński M.

Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics

2001

nr 12

113-116

The Society of Automotive Engineers (SAE), which is an international organisation that associates engineers and constructors of the vehicles such as cars, ships, trains and planes. It organises all over the world a series of competitions for student teams of young engineers. One of these competitions is called the Aero Design East and is held in Florida. The competition task is very similar to the task for a crew/ess patrol planes. The Aero Design challenges students to conceive, design, fabricate and test an aircraft, based on the prescribed engine and the maximum planform area limited to 77,50 dm2. The aircraft planform area is defined as the vertically downward projected area of the whole aircraft plus the overlapping surfaces. The competition tests each team's ability of predicting the performance of their original design. It has to be proven that there is a connection between the theory and practice. That's why the competition prepares students for their future job as engineers. It also shows how important and difficult, as well, is the work in a team. It teaches how to co-operate in order to achieve the common goal.

Lagrange multipliers determination for optimum control problem solution

Grevtsov N., Efimov O., Melts I.

Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics

1998

nr 8

209-214

This paper considers the problem of Lagrange multipliers initial proximity determination for iterative procedure of second order method of optimum control problem solution. The control problem corresponds to the optimum control of dynamic system described by finite - difference equations with account of terminal conditions, control and phase variables or mixed inequality constraints. The time of control process is free or fixed. The problem of Lagrange multipliers determination is formulated as the problem of finding the minimum of the norm square of the relations describing optimality conditions at initial proximity of control. This problem is reduced to the special two point boundary value problem (TPBVP). The method of this TPBVP solution for initial proximity of Lagrange multipliers determination is proposed.