Aircraft Engineering Principles 2nd. Edition by Lloyd Dingle, Mike Tooley | 9780080970844 | 0080970842

Aircraft Design

Aircraft Engineering Principles

306 SOLVED PROBLEMS

3 SOLVED PROBLEMS

Question: 2.16

Two gear wheels mesh together, as shown in Figure 2.1. One has 60 teeth, the other has 45 teeth. If the larger gear rotates at an angular velocity of 150 rpm, what is the angular velocity of the smaller gear wheel in rpm? ...

Verified Answer:

We hope you can see, from Figure 2.1, that the lar...

Question: 2.21

1. Convert the decimal number 92 to binary coded decimal. 2. Convert the BCD number 11101011 to decimal. ...

Verified Answer:

1. Following procedure illustrated in Figure ...

Question: 2.32

Given that a + b is a factor of a³ + b³, find all remaining factors. ...

Verified Answer:

We can approach this problem using long division, ...

Question: 2.22

1. Find the one’s complement of the binary number 100010. 2. Find the two’s complement of the binary number 101101. ...

Verified Answer:

1. The one’s complement of 100010 is found si...

Question: 4.19

Let us assume that for our previous example (Example 4.17) 1000 kg of cargo (item 2) is removed from the forward freight bay at a transit airfield. Our problem is to calculate the new CG position. ...

Verified Answer:

From our original calculations: Total mass of ...

Question: 4.25

1. The mass airflow through a propeller is 400 kg/s. If the inlet velocity is 0 m/s and the outlet velocity is 50 m/s, what thrust is developed? 2. Assume that the mass airflow through a gas turbine engine is 40 kg/s. If the inlet velocity is 0 m/s and the exhaust jet velocity is 500 m/s, what ...

Verified Answer:

We use the simplified version of the thrust equati...

Question: 3.31

Find the modal class and modal value for the frequency distribution of the heights of adults that were given in the table in Example 3.26. ...

Verified Answer:

Referring back to the table, it is easy to see tha...

Question: 3.26

Use a tally chart to determine the frequency of events for the data given above on the assembly-line task. 1.1 1.0 0.6 1.1 0.9 1.1 0.8 0.9 1.2 0.7 1.0 1.5 0.9 1.4 1.0 0.9 1.1 1.0 1.0 1.1 0.8 0.9 1.2 0.7 0.6 1.2 0.9 0.8 0.7 1.0 1.0 1.2 1.0 1.0 1.1 1.4 0.7 1.1 0.9 0.9 0.8 1.1 1.0 1.0 1.3 0.5 0.8 1.3 ...

Verified Answer:

We now have a full numerical representation of the...

Question: 4.46

Taking atmospheric pressure as 101,320 N/m², convert the following gauge pressures into absolute pressure (give your answer in kN/m² or kPa): (a) 400 kN/m², (b) 20 MN/m², (c) 5000 Pa and (d) 3000 psi. ...

Verified Answer:

We know from above that absolute pressure is equal...

Question: 4.5

Convert (a) 450 knots into kph and (b) 120 m/s into mph. ...

Verified Answer:

We could simply multiply by the relevant conversio...

Question: 1.26

A coil of 800 turns is wound on a closed mild steel core having a length 600 mm and cross-sectional area 500 mm². Determine the current required to establish a flux of 0.8 mWb in the core. ...

Verified Answer:

Now B = Φ /A = (0.8 × 10

^{-3}

) / (5...

Question: 1.17

A coil consists of an 8 m length of annealed copper wire having a cross-sectional area of 1 mm². Determine the resistance of the coil. ...

Verified Answer:

We will use the formula, R = ρl / A. The value of ...

Question: 8.1

An operational amplifier operating with negative feedback produces an output voltage of 2 V when supplied with an input of 400 μV. Determine the value of closed-loop voltage gain. ...

Verified Answer:

Now:

A_{V(CL)} = \frac{V_{OUT}}{V_{IN}}[/...