01-01-2013, 04:57 PM
EIGHT SEATER SHORT RANGE BUSINESS JET AIRCRAFT
ABSTRACT
The aim of this design project is to design an 8 Seater Short Range Executive
Aircraft by comparing the data and specifications of present executive aircrafts and to
calculate performance details. The aircraft designed is such that the landing and takeoff
field lengths they require are accordingly shorter than those for the larger transport aircraft
minimum drag and maximum thrust is also taken into consideration. Then the necessary
graphs have to be plotted for further performance calculation. Required diagrams are also
drawn.
INTRODUCTION
Name : VYMANAAS SV3
Ever since the revolutionary introduction of the Learjet 23 in 1964, corporate chief
executives and wealthy travelers have been flying in style on custom jet aircraft. The
business or executive jet has become so common that most passengers anymore are middle
management types. In fact, the executive jet industry is now a buyer's market.
Do cost-benefit analyses before you whip out the bucks for a private business jet,
however? Aviation experts tell us those 350 to 400 hours of flight time per year is
justification for owning an executive jet. If you are not flying the friendly skies that often,
then you should look into fractional ownership.
Consider the hidden costs involved in ownership of a jet. In addition to a price tag
that ranges from $6 million to $50 million for a new private jet, consider necessities such as
insurance, fuel, catering, and pilots (and there aren't that many of them to go around for
executive jets).
Aircraft management companies will take care of these needs for about 100,000 to
200,000 per year, depending on the size and usage of the jet. You will also want to
determine the size and flying range you're going to require.
PRELIMINARY DESIGN
The preliminary phase (sometimes called the conceptual design stage) starts with
the project brief and ends when the designers have found and refined a feasible baseline
design layout. In some industrial organisations, this phase is referred to as the ‘feasibility
study’. At the end of the preliminary design phase, a document is produced which contains
a summary of the technical and geometric details known about the baseline design. This
forms the initial draft of a document that will be subsequently revised to contain a thorough
description of the aircraft. This is known as the aircraft ‘Type Specification’.
PROJECT DESIGN
The next phase (project design) takes the aircraft configuration defined towards
the end of the preliminary design phase and involves conducting detailed analysis to
improve the technical confidence in the design. Wind tunnel tests and computational fluid
dynamic analysis are used to refine the aerodynamic shape of the aircraft. Finite element
analysis is used to understand the structural integrity. Stability and control analysis and
simulations will be used to appreciate the flying characteristics. Mass and balance
estimations will be performed in increasingly fine detail. Operational factors (cost,
maintenance and marketing) and manufacturing processes will be investigated.
The design process has been described in detail in the previous chapters. All the
steps that are necessary to successfully complete the preliminary design stages have been
identified. The amount of effort and time spent in each stage depends on the overall
schedule for the project. It is essential to complete the process with a feasible baseline
design, therefore it is necessary to programme and manage the work in association with all
other commitments. Although the design method has been shown as a sequential process, it
is possible to run some of the steps in parallel. It is also possible to do some preparation
work (e.g. develop estimating methods and spreadsheets) ahead of the later stages. This is
particularly useful if the project is to be done by a group, or team, of people. In such cases,
it would be essential to allocate all tasks and to set a rigid timetable for the completion of
the work some of the case studies that follow are laid out in the standard format shown
below. This format mirrors the sequence of the work to be done in the preliminary design of
any aircraft.
Design phases:
Conceptual design activities are characterized by the definition and comparative
evaluation of numerous alternative design concepts potentially satisfying an initial
statement of design requirements. The conceptual design phase is iterative in nature. Design
concepts are evaluated, compared to the requirements, revised, reevaluated, and so on until
convergence to one or more satisfactory concepts is achieved. During this process,
inconsistencies in the requirements are often exposed, so that the products of conceptual
design frequently include a set of revised requirements.
During preliminary design, one or more promising concepts from the conceptual
design phase are subjected to more rigorous analysis and evaluation in order to define and
validate the design that best meets the requirements. Extensive experimental efforts,
including wind-tunnel testing and evaluation of any unique materials or structural concepts,
are conducted during preliminary design. The end product of preliminary design is a
complete aircraft design description including all systems and subsystems.
During detail design the selected aircraft design is translated into the detailed
engineering data required to support tooling and manufacturing activities.
ABSTRACT
The aim of this design project is to design an 8 Seater Short Range Executive
Aircraft by comparing the data and specifications of present executive aircrafts and to
calculate performance details. The aircraft designed is such that the landing and takeoff
field lengths they require are accordingly shorter than those for the larger transport aircraft
minimum drag and maximum thrust is also taken into consideration. Then the necessary
graphs have to be plotted for further performance calculation. Required diagrams are also
drawn.
INTRODUCTION
Name : VYMANAAS SV3
Ever since the revolutionary introduction of the Learjet 23 in 1964, corporate chief
executives and wealthy travelers have been flying in style on custom jet aircraft. The
business or executive jet has become so common that most passengers anymore are middle
management types. In fact, the executive jet industry is now a buyer's market.
Do cost-benefit analyses before you whip out the bucks for a private business jet,
however? Aviation experts tell us those 350 to 400 hours of flight time per year is
justification for owning an executive jet. If you are not flying the friendly skies that often,
then you should look into fractional ownership.
Consider the hidden costs involved in ownership of a jet. In addition to a price tag
that ranges from $6 million to $50 million for a new private jet, consider necessities such as
insurance, fuel, catering, and pilots (and there aren't that many of them to go around for
executive jets).
Aircraft management companies will take care of these needs for about 100,000 to
200,000 per year, depending on the size and usage of the jet. You will also want to
determine the size and flying range you're going to require.
PRELIMINARY DESIGN
The preliminary phase (sometimes called the conceptual design stage) starts with
the project brief and ends when the designers have found and refined a feasible baseline
design layout. In some industrial organisations, this phase is referred to as the ‘feasibility
study’. At the end of the preliminary design phase, a document is produced which contains
a summary of the technical and geometric details known about the baseline design. This
forms the initial draft of a document that will be subsequently revised to contain a thorough
description of the aircraft. This is known as the aircraft ‘Type Specification’.
PROJECT DESIGN
The next phase (project design) takes the aircraft configuration defined towards
the end of the preliminary design phase and involves conducting detailed analysis to
improve the technical confidence in the design. Wind tunnel tests and computational fluid
dynamic analysis are used to refine the aerodynamic shape of the aircraft. Finite element
analysis is used to understand the structural integrity. Stability and control analysis and
simulations will be used to appreciate the flying characteristics. Mass and balance
estimations will be performed in increasingly fine detail. Operational factors (cost,
maintenance and marketing) and manufacturing processes will be investigated.
The design process has been described in detail in the previous chapters. All the
steps that are necessary to successfully complete the preliminary design stages have been
identified. The amount of effort and time spent in each stage depends on the overall
schedule for the project. It is essential to complete the process with a feasible baseline
design, therefore it is necessary to programme and manage the work in association with all
other commitments. Although the design method has been shown as a sequential process, it
is possible to run some of the steps in parallel. It is also possible to do some preparation
work (e.g. develop estimating methods and spreadsheets) ahead of the later stages. This is
particularly useful if the project is to be done by a group, or team, of people. In such cases,
it would be essential to allocate all tasks and to set a rigid timetable for the completion of
the work some of the case studies that follow are laid out in the standard format shown
below. This format mirrors the sequence of the work to be done in the preliminary design of
any aircraft.
Design phases:
Conceptual design activities are characterized by the definition and comparative
evaluation of numerous alternative design concepts potentially satisfying an initial
statement of design requirements. The conceptual design phase is iterative in nature. Design
concepts are evaluated, compared to the requirements, revised, reevaluated, and so on until
convergence to one or more satisfactory concepts is achieved. During this process,
inconsistencies in the requirements are often exposed, so that the products of conceptual
design frequently include a set of revised requirements.
During preliminary design, one or more promising concepts from the conceptual
design phase are subjected to more rigorous analysis and evaluation in order to define and
validate the design that best meets the requirements. Extensive experimental efforts,
including wind-tunnel testing and evaluation of any unique materials or structural concepts,
are conducted during preliminary design. The end product of preliminary design is a
complete aircraft design description including all systems and subsystems.
During detail design the selected aircraft design is translated into the detailed
engineering data required to support tooling and manufacturing activities.