European Personal Aero-Transportation. Using of the Double-Flutter Flight Principle for Manufacturing of Personal Flying-Cars by European Aircraft and Car Manufacturers
It is very clear that the car industry is in a great difficulty due to market demand decreasing. A first cause is oil reserves which will vanish in the next several decades. Substituting of regular car with electric car will be only a temporary solution for personal transportation because another root cause of decreasing of cars demand still stands: crowding of cities and roads with interminable lines of cars. It is very clear for everybody that in the most of our cities the classic car lost its main advantage: speed. On the other thousands of cars staying in traffic creates another problem: carbon dioxide and monoxide emissions and the subsequent greenhouse effects. Not only cities are crowded. Even the motorways and roads outside the cities became crowded. It seems that increasing of classic car number arrived in a critical point and new solutions for our civilization development should be found now. The 100+ years of history of classic car as the main personal transportation mean of our civilization came to an end and another mean should substitute it. The present paper affirms that the next personal transportation mean will be the flying-car using the double-flutter flight principle exposed by the authors in a previous paper. The double-flutter flight principle consists in lift producing by means of two flutter moves. A piston engine having an oscillating spindle induces vibration of an elastic grid which at its turn induces oscillation of a number of blades. That grid together with oscillating blades forms an efficient permeable surface which pushes downwards the surrounded air. According to the law (theorem) of momentum conservation a force appears which is lifting the flying-car upwards. According to calculations, the flight of flying-car using the double-flutter flight principle is about three times more efficient than the present helicopters. On the other hand, the flying-cars using the double-flutter flight principle are much more reliable than helicopters because these flying-cars do not use rotors for lift (rotors of helicopters flying in cities can hit buildings, electricity cables, trees etc.).European car producers together with aircraft manufacturers should take into account possibility as the classic car to be substituted with the flying-car in the not very far future. Conversion of classic car production lines in manufacturing lines for production of flying-cars is affordable if the flying-car uses the double- flutter flying principle. This affordable conversion is sustained by the following facts: the flying-car that uses the double-flutter flying principle uses current piston engines with reasonable adaptations for reduction of weight and delivery of power by means of oscillations move instead of rotation. The composite manufacturing lines will be used with small changes for manufacturing of cabin, engine fairing and permeable surface grid of flying-car. In the first instance the price of a flying-car will be higher than the price of a classic car but in 10-15 years the prices of the two should be about the same. This will happen because the flying-car using the double-flutter flight principle in essence a simple machine which is not more complicated than the classic car: The cabin is made of composite materials having 2…5 chairs, the engine is a piston one which transmits power to the permeable surface by means of a connecting rod which is articulated by the middle of the engine crankshaft, the landing gear is composed of three small wheels placed under cabin. Developing of European flying-car could be an important and desirable action of European Community because the world market for flying-cars is evaluated at €400 billions per year.