EXTERNAL (CONCEPTUAL) DESIGN TECHNOLOGY
In the process of scientific and technological potential building
up for military aircraft development the main conceptual characteristics of an
aircraft being developed should be adopted and validated, design performance
attainability should be demonstrated and concept implementation ways should be
The solution of this problem is the subject of external
(conceptual) aircraft system design.
External (conceptual) design provides the methodology for main
aircraft system characteristics definition and validation at early development
stages to minimize time and resource expenditures for defining characteristics
and reduce the risk of conceptual and technical decision errors.
Basic for external design of combat aircraft systems are, on the
one hand, aircraft system missions in predicted military conflicts and, on the
other hand, the scientific and technological potential built up by the start of
the development process.
External aircraft system design technology comprises the following
the assessment of combat aircraft group combat capability
deficiency and the definition of alternative concepts for capability
deficiency elimination as well as the determination of a niche for an
aircraft being designed in current and advanced versions;
the identification of combat aircraft system functional
capability deficiency for each concept version and needs for new qualities
based on aircraft system performance study with the use of operational
prediction of scientific and technological development,
identification of technological ways and means for elimination of aircraft
systems functional deficiency;
parametric synthesis of rational aircraft system concepts
within the framework of chosen technological concepts; parametric studies
with the identification of optimal characteristics domain, aircraft system
cost performance and concept feasibility estimate;
concept optimization for various technical options,
determination of aircraft system conceptual, efficiency and cost
type studies and development program optimization, including
rational concept options, study of intended application area of an aircraft
system being designed within a group in conjunction with current and planned
for development other types of weapons.
The main study tools within external design technology are system
analysis and mathematical modeling, including operational simulation, efficiency
estimate and the search for optimal solutions in particular in the presence of
multicriteriality, uncertainties and random factors.