Engineering

Front 1

Recognize what engineering majors are available at USAFA
(9)

Back 1

• Aeronautical Engineering
• Astronautical Engineering
• Civil Engineering
• Computer Engineering
• Electrical Engineering
• Engineering Mechanics
• Environmental Engineering
• Mechanical Engineering
• Systems Engineering

Front 2

Use dimensional analysis to convert quantities.

Back 2

t- tables

Front 3

List the seven main steps in the engineering method.

Back 3

• Define the problem
• Collect data
• Create viable solutions
• Analyze solutions and select the best one
• Construct the best solution
• Test and evaluate
• Draw conclusions, lessons learned, and areas for improvement; return to 2 inb

Front 4

Differentiate between requirements and criteria

Back 4

Requirements are essential or the solution can’t be considered
Criteria are optimal

Front 5

Explain how the engineering method is an iterative process.

Back 5

Process to make a decision. Evaluating stuff

Front 6

3. Use the basic laws of Boolean Algebra to express a logic function.

Back 6

The basic logic functions are represented by familiar symbols; AND is represented by * or ·, OR is represented by +, and NOT is represented by ‘ or ¯(an overbar).

Front 7

Explain various natural phenomena in terms of Newton’s laws or conservation of momentum.

Back 7

• First: stays the same unless acted upon by a force
• Second: time right of change of object’s momentum equals applied force
• Third: When A exerts force on B, B exerts opposite but equal force on A
• Univ. Gravitation: force of gravity b/w 2 bodies is directly proportional to the product of the two masses and inversely proportional to the square of the distance b/w them

Front 8

Draw a free-body diagram of a rocket being launched.
a) Identify the three primary forces acting on the rocket.

Back 8

Thrust(up), weight and drag (down)

Front 9

b) Include the five elements (BARFD) that a free-body diagram must have.

Back 9

Body, Axis, Reaction, forces, Dimenions

Front 10

Define static equilibrium

Back 10

When the sum of all forces acting on a body at rest is zero

Front 11

1. Know that rockets work by expelling high speed exhaust in one direction so that a space vehicle goes in the other direction.

Back 11

h

Front 12

Define thrust and specific impulse.

Back 12

Specific impulse is the ration of the total impulse to the propellant weight required to produce that impulse (bang for buck)
Thrust isA rocket expends energy to eject mass out one end at high velocity, pushing it (and the attached vehicle) in the opposite direction.

Front 13

Identify the primary components of a typical rocket engine: combustion chamber, throat, and nozzle.

Back 13

combustion chamber(big thing) throat(small) nozzle is the end

Front 14

Identify the advantages and disadvantages of the two types of pavement typically used in airfields.

Back 14

Both flexible and rigid pavement systems have their advantages and disadvantages. Determining which type of pavement to use in a given application will depend on the function of the pavement and the characteristics of each system. Flexible pavements are generally easier and faster to construct and typically have a lower initial cost. However, flexible pavements are also very susceptible to fuel spill and jet blast damage. Rigid pavements are good in areas with suspect soil conditions, are resistant to fuel spills and jet blast damage, and handle impact loads better. Although the initial cost is usually higher than for flexible pavements, rigid pavements are very competitive when compared on a life-cycle cost basis.

Front 15

1. Provide examples of ways to incorporate redundancy into an air base's facilities and utility infrastructure.

Back 15

Redundancy means more than having extra supplies on hand. It means having thought out and planned other ways to do business. It does not necessarily mean having two or more complete systems available and ready. The second or third backups may be "suitable substitutes" or expedient alternatives that are less efficient or less capable than the main system but still functional for a limited time or limited use:
• Utility Systems Redundancy is a primary consideration when designing or redesigning base utility supply and distribution systems. Combining on and off-base sources with looped distribution systems inherently builds in redundancy. With a looped system for water or electrical distribution, you can still supply all points on the loop even if there is a break in the line. For instance, if a mortar were to take out a portion of your water distribution line, the water in the line could still flow in either direction around the loop to reach all points on the line.
• Facilities Every essential function should have at least one alternate location on base, although the command post often has two alternate locations providing three-fold redundancy. Back-up facilities must be identified, equipped, and manned to perform the same mission as the primary. Generally, a lower level of performance is available from alternate facilities, as compared to the primary locations. Alternate sites should be remote enough from the primary facility to avoid destruction if the primary is attacked.

Front 16

Explain the advantages and disadvantages of a dispersed layout versus a conventional layout.

Back 16

• Conventional Layout. The standard arrangement for structures is in neatly organized rows, sometimes called a "military" layout. It is economical and provides the most efficient layout for daily operations. This layout provides for the most efficient use of available space and is recommended when there is no enemy air threat. In an area with a high enemy air threat, this configuration is highly vulnerable. See Figure 27.1 for an example.
• Dispersed Layout. When subject to enemy air threat, a dispersed layout is a better configuration. This arrangement provides maximum flexibility in the use of available land space and natural camouflage. In a dispersed layout, facilities may be arranged in small clusters or even individually if the situation dictates. A disadvantage of the dispersed layout is that related functional areas are sometimes separated, resulting in reduced efficiency of operations. Also, dispersal generally makes it more difficult to provide utilities to all the facilities.