An adequate external field of vision from the pilot's station is one of the topmost conditions of safe and comfortable aircraft control including a helicopter. Explicit numerical values of vertical and horizontal vision angles from the main sighting point "C" are specified by regulatory documents, in particular by Aviation regulations (FAR-29). For clarity, the normative field of vision (FoV) is usually represented in the form of a chart β = F(α) in rectangular axes, where β и α are vertical and horizontal FoV angles respectively. The opening outlines should comply with normative chart as much as possible. Currently used methods of view assessment, including a measuring method (natural and virtual with 3D model), are rather labor consuming, as they require human processing of measured data. Besides, with the initial data change, such as main sighting point "C" position, all the measurements must be repeated. The author has developed an interactive technique of structural FoV plotting by means of Siemens NX8.5 - the basic 3D CAD system of the company. However, structural FoV does not take account for pilot's head mobility and human vision binocularity. It results in overestimated, sometimes impracticable, requirements for geometry of cockpit openings. As a continuation of the above said research, the development of plotting technique for so-called actual FoV, complied with Standard 1 00444-81 and with due account of the above mentioned factors, has been carried out. This problem was also solved by graphical method with Siemens NX8.5 CAD in a similar way as structural FoV chart plotting. As a result, actual FoV chart in rectangular coordinates has been obtained. All plotting, like structural FoV, are fully associative. With input data change, the geometry is reshaped automatically. The author also managed to solve the problem of normative actual field-of-vision boundaries on a crew compartment surface, based on reverse combination of projections and convolutions of normative FoV boundaries in rectangular coordinate system. This allows optimize the location and form of cockpit openings at early design stages.%Разработан метод автоматизированного построения и сравнительного анализа зон реального обзора внекабин-ного пространства пилотом летательного аппарата, учитывающего возможные положения головы и бинокуляр-ность зрения с использованием 3D CAD-систем, в частности Siemens NX8.5. Разработанный метод позволяет в интерактивном режиме проводить оптимизацию компоновочных решений кабины экипажа при проектировании летательных аппаратов (ЛА) и обеспечить максимальное соответствие фактической зоны обзора внекабинного пространства нормативным требованиям. Этот метод также может быть применен и в других областях, где существует задача определения и оптимизации обзора, например в автомобильной промышленности. Особо подчёркивается решение поставленной задачи средствами базовой 3D CAD-системы предприятия исключительно графическим путём, без привлечения дополнительного программного обеспечения и ручных операций, что делает этот метод простым и удобным в работе.
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