1 results about "Flight test" patented technology

The invention discloses a double-engine helicopter avoidance area curve calculation method. The method comprises the following steps: counting parameters of a double-engine helicopter and parameters of an engine used by the double-engine helicopter; according to the counted parameters, calculating the power required by forward flight of the double-engine helicopter, and drawing an Nxu-V0 curve; according to the power required for forward flight of the helicopter, the descent rate during single-engine failure and full-engine failure of the double-engine helicopter is calculated, and a descent rate curve is drawn; according to an intersection point of the descent rate curve and the maximum landing speed capable of being borne by the undercarriage of the double-engine helicopter, a double-engine helicopter avoidance area curve key point is calculated; and according to the calculated key points of the double-engine helicopter avoidance area curve, drawing the double-engine helicopter avoidance area curve. Compared with an existing calculation method, the calculation result is more accurate; according to the method, the approximate range of the helicopter avoidance area can be determined before the helicopter is subjected to the flight test, and the method has an advanced guiding effect on the subsequent flight test.