Minimal problems in airplane performance

Designing Airplane Struts Using Minimal Surfaces

A model for minimizing the effects of skin drag and pressure drag is constructed. We show that a simple scaling technique can be used to transform a dual, constrained minimization problem into a volume constrained surface area minimization. We discuss some successes and failures with implementing numerical methods for the problem.

Airplane descent headaches.

Evaluation of Aerodynamic Performance of Mars Airplane in Scientific Balloon Experiment

Submit Manuscript | http://medcraveonline.com Space Agency; MELOS: Mars Exploration with Lander-Orbiter Synergy; JAXA: Japan Aerospace Exploration Agency; ARES: Aerial Regional-scale Environmental Survey; L/D: Lift-to-Drag Ratio; LES: Large-Eddy Simulations; DNS: Direct Numerical Simulation; MABE: Mars Airplane Balloon Experiment; RANS: Reynolds Averaged Navier-Stokes; CFRP: Carbon Fiber-Reinfo...

The Complexity of Minimal Satisfiability Problems

A dichotomy theorem for a class of decision problems is a result asserting that certain problems in the class are solvable in polynomial time, while the rest are NP-complete. The first remarkable such dichotomy theorem was proved by Schaefer in 1978. It concerns the class of generalized satisfiability problems SatðSÞ, whose input is a CNFðSÞ-formula, i.e., a formula constructed from elements of...

Minimal Problems for the Calibrated Trifocal Variety

We determine the algebraic degree of minimal problems for the calibrated trifocal variety in computer vision. We rely on numerical algebraic geometry and the homotopy continuation software Bertini.