Portfolio

Angelos Raftopoulos Mechanical & Aeronautical Engineer

(master-level undergraduate degree)

raftopoua@hotmail.com

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Olimpias S.A.

Mechanical Design Engineer, R&D Engineer

Olympic Mechanical S.A.

Mechanical Design Engineer, Construction Supervisor

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Contents

“Zefyros” team

Mechanical Design Engineer(undergraduate)

Freelance Engineer

Contractor of Solar Systems, Fire safety Studies, Energy

efficiency studies for buildings

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A.1.1 Olimpias S.A.

Design of a weighting system for Linear Moving Cups

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-Designed from plain paper

-Manufactured with CNC machinery

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A.1.2 Olimpias S.A.

Design of a weighting system for Linear Moving Cups

3d model in Solidworks

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Final weighting system

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A.1.3 Olimpias S.A.

Design of Plastic Cups with Rubber Components

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-Designed as an evolution

of an older cup

-Special effort was made for

more accurate weight

results and reduction of the

manufacturing cost

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A.1.4 Olimpias S.A.

Design of plastic Cups with Rubber Components

-3d model of the new cup

using Solidworks

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-Older cup assembled and

positioned on the special chain

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A.2.1 Olimpias S.A.

Design of Belt and Chain Conveyors

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-Drawings of large assemblies

(over 500 parts)

-Creating BOM tables

-Dimensioning of electric motors

A.2.2

-Drawings of Sheet Metal Parts

-Stress analysis of Sheet Metal

Parts

Olimpias S.A.

Design of Belt and Chain Conveyors

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A.2.3 Olimpias S.A.

Design of Belt and Chain Conveyors

-Drawings of framework

-Creating tables of

Weldments Cut List

-Stress Analysis of

Weldments

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A.2.4 Olimpias S.A.

Design of Belt and Chain Conveyors

-Drawings of revolved parts

(for lathe)

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(for lathe)

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A.2.5 Olimpias S.A.

Design of Belt and Chain Conveyors

-Calculating the transmission

-Sizing Sprockets and Chains

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-Sizing Sprockets and Chains

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A.3.1 Olimpias S.A.

Design of Rotating Machines

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-Design of an innovative machine for the

sorting of fruits and vegetables

-Design of a special weighting system for

cups which move in an arc track.

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A.3.2 Olimpias S.A.

Design of Rotating Machines

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-3d model in Solidworks

-Construction process

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A.3.2 Olimpias S.A.

Design of Rotating Machines

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-Rotating Potato Peeler

-Drawings

-Cutaway view of the central hub

-Disk

-Construction process

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A.3.3 Olimpias S.A.

Design of Rotating Machines

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-3d model in Solidworks -Final product

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A.4.1 Olimpias S.A.

Design of Moving Mechanisms with Pneumatic Cylinders

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-Construction process

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B.1.1 Olympic Mechanical S.A.

Supervising Construction

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-Supervising of the installation of machinery (belt

conveyors) in Recycling Factory ,Heraklion ,Greece

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B.2.1 Olympic Mechanical S.A.

Detail Drawing in Autocad 2D (Assistant)

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-Drawings in Autocad 2d

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B.2.2 Olympic Mechanical S.A.

3d model in Inventor (Assistant)

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-3d model of a special platform which was on wheels that was

going to be used to approach an airplane so as to facilitate the

inspection of the fuselage.

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B.3.1 Olympic Mechanical S.A.

On site draftings

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-Drafting and on hand

sketching

-Quick decisions are taken

when it is obligatory

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B.4.1 Olympic Mechanical S.A.

Work Scheduling

-Meeting short delivery deadlines

-Subcontractor tender assessment

- Attending client meetings

-Value management techniques

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B.5.1 Olympic Mechanical S.A.

CNC Machine programming

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-CNC Press Brake

-CNC Three axis drilling machine

-CNC Hydraulic Shear

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C.1.1 Freelance Engineer

Electromechanical Studies on Buildings

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-Electrical and Mechanical design/study for

buildings

-Energy efficiency studies for buildings (KENAK,

LEED)

-Energy performance certification of buildings

-Smart house configuration

-Fire safety studies for buildings

-Safety engineer

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C.2.1 Solar Systems Contractor

Design and Construction

-3d model

-Electrical Study

-Construction

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-Design and construction of stand-alone

Photovoltaic Systems for buildings

-Design and construction of grid connected

Photovoltaic Systems(Solar parks)

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D.1.1 Zefyros

Mechanical Design Engineer (undergraduate)

Dutch Association of

Technology Transfer (ATO)

Energy Research Centre of

Netherlands (ECN)

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-Zefyros is a wind powered vehicle which was built to

compete in the 1st World Race of Wind-Powered Vehicles,

“Racing Aeolus 2008”, in Den Helder, Netherlands.

http://www.windenergyevents.com/ .

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D.1.2 Zefyros

Mechanical Design Engineer(undergraduate)

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-CAD along with FEA was used to better validate the design transformation to

the construction of the Vehicle (Static and dynamic analysis).

Requirements which are referred in the notice of the race:

-Vertical projection of all parts do remain within the maximum length and width

of the circumferential bumper.

-Rotor area A<4m2.

-The driver under no circumstances will be able to have contact with the ground

or wheels.

-The rotor will have an individual brake controlled by the driver.

-The WPV will have an individual brake controlled by the driver.

-The rotor will be contained inside a cage with mesh size greater than 0.1m

-The WPV can be towed with blocked rotor.

-The chassis of the WPV provides adequate protection of driver.

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D.1.3 Zefyros

Mechanical Design Engineer(undergraduate)

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-Power: 4Kw

-Max speed: 21 mph

-Height: 3.5m

-Width: 2m

-Rotor diameter: 1.95m

-CVT type gearbox

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D.1.4 Zefyros

Mechanical Design Engineer(undergraduate)

-Zefyros finished in the fifth position and the team

was awarded for the best use of sustainable

materials and spare parts.

-Zefyros team accomplishments were published in

European and Greek magazines

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