Hostility is seen as form of emotionally charged angry behavior. In everyday speech it is more commonly used as a synonym for anger and aggression.It appears in several psychological theories.ostility is seen as form of emotionally charged angry behavior. In everyday speech it is more commonly used as a synonym for anger and aggression. It appears in several psychological theories.
In the Popular Rotorcraft Association, ârotorcraftâ includes anything that uses rotor blades to produce the lift needed to fly, such as helicopters and gyroplanes. A ârotorcraftâ is a specific US FAA âcategoryâ of aircraft. âHelicoptersâ and âGyroplanesâ are specific U.S. FAA âclassesâ of rotorcraft.
This paper presents the design of helicopter tail rotor composite blade. The requirements which. govern the design of the tail rotor are: strength, power efficiency, low weight, avoidance of vibrations. and additional noise, and easy controllability. The design of the tail rotor is expressed by the main. design parameters: diameter, tip speed, solidity, number of blades. Length of machine, ground. clearence and weight considerations will all favour the small antitorque rotor. Avoidance of. resonance frequencies may affect the choice of tip speed.