Analiza możliwości zmniejszenia niebezpiecznej strefy H-V w zawisie i locie pionowym śmigłowca

The computer program was developed for helicopter vertical autorotative landing simulation after one or both engines failure. The influence of the rotor inertia, initial rotational rotor speed and collective pitch control on vertical autorotative landing characteristics was investigated. The possibility of decreasing anding velocity by proper collective control was prooved.