9A21301 Aircraft Engineering Drawing With CAD

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Code: 9A21301

B.TECH II Year I Semester (R09) Regular & Supplementary Examinations November 2012

AIRCRAFT ENGINEERING DRAWING WITH CAD

(Aeronautical Engineering)Time: 3 hours Max. Marks: 70

All questions are to be answered

First angle projection to be adopted

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1. Answer any two of the following: [5x2= 10 M]

(a) Sketch the following conventional representations of the following materials;(i) Fibre.(ii) Lead.(iii) Aluminum.(iv) Oil.(v) Plywood.

(b) Draw the following types of threads with all the proportions where pitch of the thread is P:(i) Whitworth.(ii) Worm.

(c) Show by sketches:(i) Unidirectional system of dimensioning.(ii) Polar co-ordinate dimensioning.


(a) Draw sectional front view and top view of double riveted zig-zag lap joint where diameter of therivet is 16 mm.(b) Draw hal f sectional v iew from the front and v iew f rom t he si de o f a r igid f lange coupling to

connect two shafts, each of diameter 30 mm.(c) Draw the sectional front view and t op view of cotter joint with gib. Assume that the shaft is a

square cross-section with 25 mm side.

3. Details of knuckle joint are given in fig.1. Assemble al l the parts and d raw the sectional frontview and top view of the assembly. All the dimension are in mm. [20 M]

4. Write the co mmands in se quence i n C AD t o generate t he model sh own in t he f ig.2Dimensions are in mm. (write in drawing sheet only). [20 M]

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Code: 9A21301


AIRCRAFT ENGINEERING DRAWING WITH CAD(Aeronautical Engineering)

Time: 3 hours Max. Marks: 70



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(a) Sketch the conventional representation of the following:(i) Helical tension spring.(ii) Leaf spring with eyes and centre band.

(b) Draw the following types of threads with all the proportions where pitch of the thread is P:(i) Whitworth.(ii) Worm.

(c) Draw the following types of threads with all the proportions where pitch of the thread is P:(i) Buttress thread.(ii) Witworth thread.


(a) Draw sectional f ront view and top view of double riveted, double strap chain butt joint wherediameter of the rivet is 12 mm.

(b) Draw the front and top views of the knuckle joint with proportions where the diameter of theshaft is 30 mm.

(c) Sketch t he following t ypes of keys in t wo vi ews. T ake sh aft di ameter as 30 m m and hub

diameter as 60 mm.(i) Hollow saddle key.(ii) Flat saddle key.(iii) Taper sunk key.

3. Details of screw j ack are g iven i n fig.1. Assemble al l t he par ts and draw t he sectional f rontview and top view of the assembly. All the dimensions are in mm. [20 M]

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Code: 9A21301


AIRCRAFT ENGINEERING DRAWING WITH CAD(Aeronautical Engineering)




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(a) Sketch the conventional representation of the following:(i) Square on shaft.(ii) Internal screw threads.(iii) Splined shaft.(iv) Interrupted views.(v) Square on shaft.

(b) With an example show all the elements of dimensioning.(c) Draw the following types of threads with all the proportions where pitch of the thread is P:

(i) Buttress thread.(ii) ACME thread.


(a) Draw the following screws whose nominal diameter is D.(i) Flat head screw.(ii) Round head screw.(iii) Oval head.

(iv) Socket head.(b) Draw the sectional view from the front, and view from the side of a cotter joint with sleeve usedto connect two rods of 50 mm diameter each.

(c) Sketch the following types of keys two views. Take shaft diameter as 30 mm and hub diameteras 60 mm.

(i) Hollow saddle key.(ii) Flat saddle key.(iii) Taper sunk key.(iv) Single headed feather key.

3. Details of knuckle joint are given in fig.1. Assemble al l the parts and d raw the sectional frontview and top view of the assembly. All the dimensions are in mm. [20 M]

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Code: 9A21301


AIRCRAFT ENGINEERING DRAWING WITH CAD

(Aeronautical Engineering)




*****


(a) Sketch the conventional representation of the following:(i) Helical tension spring.(ii) Leaf spring with eyes and centre band.

(b) Show by sketches:(i) Unidirectional system of dimensioning.(ii) Polar co-ordinate dimensioning.

(c) Sketch the following thread profiles for a nominal diameter D.(i) Witworth thread.(ii) ISO Metric thread.


(a) Draw the sectional front view and top view of the single riveted double plate butt joint with diaof the rivet as 16 mm.

(b) Draw the front and top views of the knuckle joint with proportions where the diameter of theshaft is 30 mm.

(c) Draw the representations with illustrations of the following welded joints:

(i) Single U butt joint.(ii) Double V butt joint.(iii) Continuous fillet weld.

3. Details of an eccentric are shown in the fig.1. With dimensions in mm. Assemble all the partsand provide front view and top view of the assembled part. Take suitable scale. [20 M]

4. Write the co mmands in se quence i n C AD ( any) t o generate the model sh own i n t he f ig2Dimensions are in mm (write in drawing sheet only). [20 M]

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9A21301 Aircraft Engineering Drawing With CAD