AeSI-INTRODUCTION TO AERONAUTICS QUESTION PAPER

                                                     JUNE 2013

PART A

(1) THIS WAS FIRST ARTIFICIAL SATELLITE OF EARTH

A. SPARTAN

B.SPUTNIK

C.SOYUZ

D.SHEPHERD

(2) THE FLYING BOMB MISSILE WAS DEVELOPED BY

A. JAPAN

B. RUSSIA

C.ITALY.

D. GERMANY

(3) THIS TYPE OF WING HAS MAXIMUM OSWALDS WNG EFFICIENCY FACTOR

C.ELLIPTIC WING

(4)THE DESIGN FEATURE IS CRITICAL FOR A FIGHTER AIRPLANE

A.HIGHER L/D

B. HIGHER T/D

C.HIGHER T/W

D.HIGHER W/S

(5) THIS TYPE OF AIR PLANE POWER PLANT HAS MAXIMUM TSFC

A.PISTON PROP

B.TURBO JET

C.TURBO FAN

D.TURBO PROP

(6) SHORTER TAKE OFF DISTANCE IN AIRPLANES ARE MAINLY DUE TO

A.LARGER WING LOADINGS

B.LOWER WING LOADING

C.LARGE VALUE OF e

D.HIGHER POWER LOADING

(7) THIS TYPE OF JET BASED POWER PLANT IS USED IN COMBAT AIR PLANES

A.TURBO FAN

B.TURBO JET

C.FAN JET

D.TURBO PROP

(8) THE SAFEST LOCATION OF DFDR IN AIRPLANE IS

A.CENTRE OF THE FUSELAGE

B.EXTREME END OF THE TAIL CONE

C.TIP OF THE VERTICAL TAIL

D.SOME WHERE IN THE TAIL CONE

(9)STRINGERS OF AN ALL METAL WING

A.PROVIDES SHAPE TO THE WING

B.PROVIDES COMPRESSIRE STRENGTH TO THE  WING

C.PROVIDE TENSILE STRENGTH TO THE WING

D.PROVIDE SPAN WISE STRENGTH TO THE WING

(10) FUEL TANKS FOR THE AIRPLANE POWER PLANT ARE LOCATED

A.IN THE TAIL REGION

B.CLOSE TO THE CENTRAL SECTION OF THE FUSELAGE

C.CLOSE TO THE CENTRAL SECTION OF THE WING

D.CLOSE TO THE CG OF THE AIR PLANE

PART B

2.SHOW THAT AERODYNAMIC EFFECT OF DEFLECTING TAILING EDGE FLAP IS THE SAME AS THAT OF THE CAMBER OF THE AIRFOIL.UNDER THESE CONDITIONS WHAT IS THE NECESSITY OF DEFLECTING FLAPS AT THE TAKE OFF AND LANDING OF THE AIRPLANE? MAKE USE OF SKETCHES AND PLOTS FOR CLEARING DOUBTS IF ANY

3.MAKE USE OF SKETCHES TO ELABORATE THE FOLLOWING

A. HOTOL OF AIRPLANE

B.VTOL FOR AIR PLANE

C.STOL FOR AIRPLANES

D.SEA PLANES

DESCRIBE SALIENT FEATURES OF EACH AND RESPECTIVE MERITS.

4.(A)WRITE DOWN THE DRAG POLAR OF AN AEROPLANE. HENCE JUSTIFY THE LARGER SPAN AND NARROW CHORD FOR SALE  PLANE WITH ITS ADVANTAGES.

(B).ELABORATE THAT RATE OF CLIMB OF AN AEROPLANE HAS DIRECT EFFECT ON TAKE OFF DISTANCE

5.SHOW THAT WING TAIL ARRANGEMENT OF CONVENTIONAL AEROPLANE AND HENCE EXPLAIN ITS THREE TYPES OF STABILITY(LATERAL, LONGITUDINAL,DIRECTIONAL).CAN THE LONGITUDINAL STABILITY BE PRE PLANNED FOR A NEW DESIGN.

6.WHICH ARE THE POSSIBLE LOCATIONS OF MULTIPLE POWER PLANTS(PROP AND JET BASED) ON AN AIRPLANE?DESCRIBE THE MOST OPTIMUM LOCATION FOR EACH OF THESE TWO  WITH SKETCHES AND PLOTS.WHAT ARE ITS OVER ALL MERITS?

7.(A).DESCRIBE (1) DE ICING SYSTEM (2) ANTI ICING SYSTEM ON AN AEROPLANE.WHICH ONE IS MOST USED IN MODERN AIRPLANES.

(B).DESCRIBE WITH SKETCHES THE TRANSFER OF AIR LOADS COMING ON THE AIRPLANE WING TO ITS MAIN COMPONENTS IN SMOOTHER MANNER.

PART 3

8.ELABORATE

(A).YAW ACCOMPANIES ROLL AND ROLL ACCOMPANIES YAW

(B).A JET BASED ENGINE IS NOT DESIRED IN LOW SPEED S AND LOW ALTITUDES

*(C).LAST ROWS OF BLADES OF AN AXIAL COMPRESSOR ARE FABRICATED OUT OF TITANIUM BASED alloys

(D).THE CASTING OF AN AIR SPEED INDICATOR IS SEALED AT STANDARD SEA LEVEL TEMPERATURE AND PRESSURE

(E).A CONSTANT SPEED PROPELLER EXHIBITS SAME EFFICIENCY AT ALL SPEEDS

(F).THE ACTION OF LEADING EDGE SLAT IS TO DELAY THE STALLING OF AN AIRPLANE WING.