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USN No:
III / VII Semester B. Tech Examinations – December 2020 / January 2021
Course Title: Introduction to Aerospace Engineering / Course Code: 19AS2301 /
Fundamentals of Aerospace Engineering 16IE469
Duration: 03 Hours Date: 30-12-2020
Time: 10:00 AM to 01:00 PM Max Marks: 100
Note: 1. ALL SECTIONS ARE COMPULSORY
2. Each Section carries 20 Marks
3. Draw neat sketches wherever necessary
4. Missing Data may be suitably assumed
SECTION – 1
1.a.
Describe the features of Troposphere, Tropopause and Stratosphere in the
atmosphere. Draw a sketch showing the variation of temperature from sea
level to Stratosphere as per ISA and indicate the respective temperatures.
(06 Marks)
1.b.
If an aircraft flies at Mach 1 at sea level, what would be its speed at an
altitude of 11 kM at the same Mach number?
(06 Marks)
1.c.
Draw neat sketches of typical symmetric and asymmetric airfoils and their
respective CL-Alpha curves. Describe “Stall” of an airfoil based on neat
sketches.
(08 Marks)
SECTION – 2
2.a.
Draw neat sketch of an aircraft and name the major components and
control surfaces. Describe how trim tabs are useful on control surfaces.
(08 Marks)
2.b.
If aircraft with a wing area of 20 sq. m flies at 200 Knots at sea level and
generates a lift force of 15000N, what are its Mach number and Lift
Coefficient?
(06 Marks)
2.c.
What are the differences between Center of Pressure and Aerodynamic
Center of an airfoil?
(03 Marks)
2.d
What are the advantages and disadvantages of solid and liquid rocket
propellants?
(03 Marks)
