1. Sections of Solids:
Sections of Pyramids, Prisms, Cubes, Tetrahedrons, Cones and Cylinders resting only on their bases (No problems on axis inclinations, spheres and hollow solids). True shape of sections.
2. Orthographic Views:
Conversion of pictorial views into orthographic projections of simple machine parts with or without section. (Bureau of Indian Standards conventions are to be followed for the drawings) Hidden line conventions. Precedence of lines.
3.Thread Forms:
Thread terminology, sectional views of threads. ISO Metric (Internal & External) BSW (Internal & External) square and Acme. Sellers thread, American Standard thread.
4.Fasteners:
Hexagonal headed bolt and nut with washer (assembly), square headed bolt and nut with washer (assembly) simple assembly using stud bolts with nut and lock nut. Flanged nut, slotted nut, taper and split pin for locking, counter sunk head screw, grub screw, Allen screw.
5.Keys & Joints:
Parallel key, Taper key, Feather key, Gibhead key and Woodruff key
6.Riveted Joints:
Single and double riveted lap joints, butt joints with single/double cover straps (Chain and Zigzag, using snap head rivets). Cotter joint (socket and spigot), knuckle joint (pin joint) for two rods.
7. Couplings:
Split Muff coupling, protected type flanged coupling, pin (bush) type flexible coupling, Oldham's coupling and universal coupling (Hooks' Joint)
8. Design of propeller and hub assembly
9. Design of wing assembly
10. Design of fuselage assembly
11. Design of Engine Mounts
12. Design of main rotor blade assembly of helicopter
13. Design of UAV assembly
14. Design of Landing Gear Assembly
Course outcomes:
After studying this course, students will be able to:
1. Distinguish drawings of machine and aircraft components
2. Identify assembly drawings either manually or by using standard CAD packages.
3. Practice with standard components and their assembly of an aircraft.
Conduct of Practical Examination:
Internal Assessment: 20 Marks
Sketches shall be in sketch books and drawing shall be drawn through the use of software on A3/A4 sheets. Sketch book and all the drawing printouts shall be submitted.
Scheme of Evaluation for Internal Assessment (20 Marks)
(a) Class work (Sketching and Computer Aided Aircraft Drawing printouts in A4/A3 size sheets): 10Marks.
(b) Internal Assessment test in the same pattern as that of the main examination (Better of the two Tests): 10 marks.
Scheme of Examination:
Two questions are to be set from each Part-A, Part-B and Part-C.
Student has to answer one question each from Part A and Part B for 15 marks each and one question from Part C for 50 marks.
i.e. Part A 1 x 15 = 15 Marks
Part B 1 x 15 = 15 Marks
Part C 1 x 50 = 50 Marks
Total = 80 Marks
INSTRUCTION FOR COMPUTER AIDED AIRCRAFT DRAWING (17AEL48) EXAMINATION
1. There is no restriction of timing for sketching/ computerization of solutions. The total duration is 3 hours.
2. It is desirable to do sketching of all the solutions before computerization.
3. Drawing instruments may be used for sketching.
4. For Part A and Part B 2D drafting environment should be used.
5. For Part C 3D part environment should be used for parts assembly drawing and extract 2D views.
Graduate Attributes (as per NBA):