Abstract In recent years, a significant number of one- and two-seat lightweight helicopters have come into existence, this makes it possible to analyse parameters determine dependencies for class helicopters. the knowledge such is necessary at preliminary design stage. analysis performed in paper its comparison with statistical data all categories made corrections methods determining helicopter...

This work presents a horizontal velocity controller for the unmanned helicopter APID MKI11 by Scandicraft AB in Sweden. We use a novel approach to the design consisting of two steps: first, a Mamdani-type of fuzzy rules compute for each desired horizontal velocity the corresponding desired values for the attitude angles and the main rotor collective pitch; second, a TakagiSugeno controller is u...

This paper describes the development of a parameterized model for a small-scale unmanned helicopter (Yamaha R-50 with 10 ft rotor diameter) and its identification using a frequency domain identification technique. The model explicitly accounts for the stabilizer bar, which has a strong influence on the flight dynamics characteristics. The accuracy of the identified model is verified by comparin...

Radio-controlled helicopters with electric motor driven rotor blades have become trendy toys, not only for children but also adults. Despite their popularity, they are not accompanied by necessary safety precautions for operators, which are indispensable for avoiding devastating bodily injuries. We, as ophthalmologists, have witnessed an unreported serious and irretrievable ocular trauma caused...

This paper presents results for a 31 variable helicopter rotor design example. Results are given for several numerical methods. This is a brief description of a portion of the Boe-ing/IBM/Rice University collaboration whose purpose is to develop eeective numerical methods for managing the use of approximation concepts or response surface methodology in design optimization.