ae2141 1 introduction 2010

Program Studi Aeronotika dan AstronotikaFTMD - Institut Teknologi Bandung

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AE2141Introduction

AE2141MENGGAMBAR TEKNIKENGINEERING DRAWING

Semester 1 10/11Introduction (topic #1)

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Deskripsi

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Mata kuliah ini memberikan konsep dan aturan gambar teknik menurut standar ISO serta memberikan pengertian mengenai parameter geometri utama sebuah pesawat terbang. Konsep yang diberikan meliputi : gambar sebagai bahasa teknik, gambar proyeksi majemuk, gambar proyeksi tunggal, gambar potongan, pemberian dimensi dan gambar tiga dimensi. Media gambar yang digunakan adalah kertas dan pensil yang kemudian dilanjutkan dengan aplikasi CAD. Matakuliah ini diberikan untuk membangun kemampuan mahasiswa dalam menuangkan pemikirannya menggunakan gambar.


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Aturan Umum

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Aturan Perkuliahan :Tugas 30%Praktikum 30%UTS 20%UAS 20%

Catatan untuk nilai TugasPenalti keterlambatan pengumpulan tugas :Terlambat 1 hari : - 10%Terlambat hari selanjutnya : -2% per hari

Catatan untuk kehadiranKehadiran dapat membantu nilai di perbatasanKetidakhadiran karena sakit harus dibuktikan dengan surat keterangan dari dokter

Titip absensi : Bila dalam satu pertemuan ada yang titip absensi, maka kehadiran seluruh kelas dibatalkan.


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Pustaka

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Menggambar Mesin Menurut Standar ISOPradnya Paramita,G. Takeshi Sato dan N Sugiarto H.Technical DrawingThomson Delmar Learning,David L. Getsch et al


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Some Digital Sources

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Technical Drawing Topics : http://www4.district125.k12.il.us/Faculty/djohanns/TechEdHomePage/TDTopics.htmlEngineering Drawing :http://www.ider.herts.ac.uk/school/courseware/graphics/engineering_drawing/Technical drawing definition : http://en.wikipedia.org/wiki/Technical_drawingInternational Standard Organization : www.iso.orgCAD history : http://mbinfo.mbdesign.net/CAD-History.htmAutoCAD dari Autodesk : www.autodesk.comCATIA dari Dasault Systèmes : http://www.3ds.com/products-solutions/plm-solutions/catia/overview/Solidworks : www.solidworks.com

http://www.iso.org/

http://mbinfo.mbdesign.net/CAD-History.htm

http://www.autodesk.com/

http://www.3ds.com/products-solutions/plm-solutions/catia/overview/

http://www.solidworks.com/


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AE2141Introduction

Exercise

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Lipat kertas A4 menjadi A5Beri nama, NIM dan tanggal di pojok kanan atasGambar sebuah obyek fisik benda mati (10’)Berikan pada kawan untuk dibuatkan daftar keterangan mengenai gambar (Nama/jenis obyek, ukuran, detail lainnya … )Kembalikan pada pemilik dan hitung berapa persen kesalahan komentarNyatakan komentar benar dalam persentase


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AE2141Introduction TM2010

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SELAMAT Anda telah mensimulasikan komunikasi melalui media/bahasa gambar :Bagaimana kualitas komunikasi Anda melalui media gambar ?


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AE2141Introduction

Bahasa

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Bahasa adalah alat penyampaian informasi

Lisan Tulisan Matematik Gambar Musik Mimik

Indera akustik visual Visual visual akustik Visual

Ekspresi suara Tulisan Tulisan gambar nada Tubuh

Aturan Tata bahasa

Tata bahasa Theorema Aturan

gambarNot

musik Context


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AE2141Introduction

Materi Kuliah

Pengantar Gambar TeknikGambar Proyeksi OrthogonalGambar PotonganGambar Proyeksi TunggalPengantar CAD

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Gambar Teknik lawas


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Fungsi GambarPenyampaian informasiPenyimpanan informasiAlat bantu berpikir


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Information found in a drawing

Shape: the description of the shape of an object is indicated by the number and type of views and lines selected to completely show or describe the form of an objectDimensioning: the description or the size and location of the shape of an object is inicated by lines and numerals used to specify the dimensions of an objectSpecifications: additional information such as general notes, material, heat treatment, machine finish, and applied finish are indicated by special entries written on the drawings


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Job related to Technical Drawing

OccupanciesEngineers, designers, drafters, technicians, etc

Level of ability :Make drawing, read drawing, both


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Learning ChecklistFUNDAMENTAL KNOWLEDGE AND SKILLS

RELATED KNOWLEDGE

ADV. KNOWLEDGE AND SKILLS

Drafting EquimentFundamental Drafting TechniquesSketchingGeometric ConstructionVisualizationMultiview drawingSection viewsGraphical descriptive geometry Auxiliary viewsGeneral dimensioningNotationBasic CAD system operation

MathWelingMedia and reproductionManufacturingMaterials and processes

Development and intersectionsGeometricdimensioning and tolerancingThreads and fastenersSpringsCamsGearsMachine design drawingPictorial drawingDrqfting shortcutsCAD technology


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Design for Manufacturability

A good product not only met the customer’s needs in terms of function. It also had to be efficiently and economically manufacturedAttitude :

Traditional attitude : « we designed it, making is your problem »DFM attitude : « let’s design it so that it works, and can be efficiently produced »DFM teams comprised of : design, drafting, manufacturing

Reduce Cost : Metal Tech Manufacturing co (MTM) production cost fall by 32 percent and sales doubled within a year

Types of Technical Drawing16

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Detail Drawing


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Installation Drawing


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Wiring Diagram


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Exploded-view Drawing


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Sectional View


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Half Sectional View


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Scematic Diagram


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Pictorial Diagram


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Large Drawing


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Technical Drawing example


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Technical Drawing example


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3 View Drawing


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Cutaway Drawing

From Idea to Reality30

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Wing in Surface Effect

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AE2141Introduction

Tandem Wing Development

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Technical Drawing Grammar43

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Technical Drawing Grammer

Line TypeText information (dimension, material, etc)Symbols (surface treatment, view, simplification, etc) Projection (perspective, orthogonal, single )Section drawing

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Types of Lines


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Thick linesVisible line of an object

Thin linesHidden line of an objectCenter lineDimension

Extra thick linesCutting plane


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Use of Hidden line:Hidden lines should always start and end with a dash Dash should always join at corners

Except:When such a dash would form a continuation of a visible detail line


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Types of text

Sketching50

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Sketching Importance

« Don’t they teach sketching in school anymore ? .....» : Dan Johnson, chief drafter for Precision Machining, IncComponent re-engineering that should be done on site. Maria Sims, newest drafter take the job and get promoted


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Advantage of sketchingRequires very view materials :

pencil/pen, media (paper/graph paper or even napkins)Eraser

Quick

Do you know ?Early design of Voyager around the world A/C was sketched on napkins


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VoyagerWing span : 110.8 ftAR : 33.8Empty weight : 1858 lbTO weight : 11326 lb9 days, 3 min, 44 sec, 25012 miles at 115.8 mph


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General rules skechingHold the pencil firmly, but not so tightly as to create tension or hand fatigueGrip the pencil approx one inch to one and one-half inches up from the pointMaintain a confortable angle between the pencil and the sketching strokesDraw horizontal lines from left to right using short, slightly overlapping strokesDraw vertical lines from top to bottom using short, slightly overlapping strokesDraw curved lines using short, slightly overlapping strokes


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Proportion in sketchingUse graph paper whenever possibleExamine the object and mentally break into its componentsBegin with the largest component, estimate the proportionUse construction line squares and rectangles to block in irregularly shaped components


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Draw LARGE size pictureMenggambar benda sirkularUse of pencil type

2B pencil for thick lineHB pencil for thin line

Gambar di milimeter block dengan pensil B/2BBujur sangkar : 2cm x 2 cm 3 kali , 4cm x 4cm 3 kaliPersegi panjang : 4 cm x 6 cm, 5 kaliLingkaran : diameter 4 cm 3 kali, dia 6 cm 3 kali

ae2141 1 introduction 2010

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