Introduction to Aerospace Engineering Mid - II, November - 2014

1.If the forces and moments on the body caused by a disturbance tend initially to return the body toward its equilibrium position is called as
  • statically stable
  • dynamically stable
  • both a & b
  • resulting forces
Answer: A
2.An airplane is in pitch equilibrium when the _______________
  • Mcg = CM, cg = 0
  • Mac = CM, ac = 1
  • Mac = CM, ac = 0
  • Mac = CM, cg = 0
Answer: A
3.The data storage center is the main storehouse of
  • Uplinked information
  • downlinked information
  • both a & b
  • None
Answer: B
4._______uses angular momentum of the rotating satellite to maintain stability and control
  • spin-stabilized satellites
  • 3-axis stabilized satellites
  • De-stabilized satellites
  • all
Answer: A
5.The _____________________ is responsible for maintaining the components of the satellite within operational temperature limits.
  • Power subsystem
  • thermal control subsystem
  • attitude determination and control subsystem
  • Propulsion and station-keeping subsystem
Answer: B
6.Scientific missions are initiated with the intent to____________________
  • Discover
  • Protect, monitor, and learn
  • help society
  • telecommunications
Answer: A
7.Total emitted or radiated power is given by
Answer: D
8.One of the challenging problems to solve in the early stages of a design is how to represent __objects on a __ surface.
  • 3D, 2D
  • 2D, 3D
  • big, small
  • high, low
Answer: A
9.A _________is a method to represent a 3D object by extending all its points with straight lines to a plane of projection.
  • Design
  • projection
  • Both a & b
  • Representation
Answer: B
10.______________is an extension of CAD usually following from solid modeling, in which the tool paths for fabrication are defined within the computer model.
  • Computer-aided machining
  • Mechanism Design
  • Finite Element Meshing
  • Systems Analysis
Answer: A
11.Satellite missions are categorized into ______________________________
Answer: Scientific, Military and national security, Civil & Commercial.
12.The __________&__________is responsible for processing the raw downlinked data into some form of interpretable information.
Answer: data analysis and distribution center
13.The satellite designer plans according to three budgets: ________________________
Answer: The mass budget, the power budget, and the cost budget
14.The ____________________________functions to keep the satellite in its intended orbit.
Answer: Propulsion and station-keeping subsystem
15.IMU: ___________________
Answer: Inertial measurement unit.
16.Life support functions fall into two categories:_________________________.
Answer: Non-regenerative and regenerative
17.The design is beginning to formulate on a systems level, and the analysis will help to verify the ___________________statement.
Answer: original problem
18.The __________________design provides an opportunity for the concepts and approaches of aerospace engineering in the context of the design.
Answer: lighter-than-air vehicle
19.WRM : ____________________________________
Answer: Water recovery and management
20.___________________________________are basic functions that are part of most scenarios for future human missions.
Answer: Atmosphere production, revitalization, and water recovery