1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natasha2012 [34]
4 years ago
14

The following information is available for an aircraft four-stroke reciprocating engine:indicated mean effective pressure (IMEP)

= 160 psistroke = 5 inbore = 5 inengine rpm = 3000number of cylinders = 9cylinder clearance volume = 15 in3engine mechanical efficiency, ηmech = 90%propeller efficiency, ηprop = 80%Calculate:brake horsepower (BHP)indicated horsepower (IHP)thrust horsepower (THP)friction horsepower (FHP)brake mean effective pressure (BMEP)Compression Ratio (is your answer reasonable for a spark ignition engine?)

Engineering
1 answer:
Strike441 [17]4 years ago
5 0

Answer:

See explaination

Explanation:

Please kindly check attachment for the detailed step by step solution of the given problem.

You might be interested in
The pressure distribution over a section of a two-dimensional wing at 4 degrees of incidence may be approximated as follows: Upp
Ilya [14]

Answer:

The lift coefficient is 0.3192 while that of the moment about the leading edge is-0.1306.

Explanation:

The Upper Surface Cp is given as

Cp_u=-0.8 *0.6 +0.1 \int\limits^1_{0.6} \, dx =-0.8*0.6+0.4*0.1

The Lower Surface Cp is given as

Cp_l=-0.4 *0.6 +0.1 \int\limits^1_{0.6} \, dx =-0.4*0.6+0.4*0.1

The difference of the Cp over the airfoil is given as

\Delta Cp=Cp_l-Cp_u\\\Delta Cp=-0.4*0.6+0.4*0.1-(-0.8*0.6-0.4*0.1)\\\Delta Cp=-0.4*0.6+0.4*0.1+0.8*0.6+0.4*0.1\\\Delta Cp=0.4*0.6+0.4*0.2\\\Delta Cp=0.32

Now the Lift Coefficient is given as

C_L=\Delta C_p cos(\alpha_i)\\C_L=0.32\times cos(4*\frac{\pi}{180})\\C_L=0.3192

Now the coefficient of moment about the leading edge is given as

C_M=-0.3*0.4*0.6-(0.6+\dfrac{0.4}{3})*0.2*0.4\\C_M=-0.1306

So the lift coefficient is 0.3192 while that of the moment about the leading edge is-0.1306.

8 0
3 years ago
A Simply supported wood beam with overhang is subjected to uniformly distributed load q. The beam has a rectangular cross sectio
irinina [24]

Answer:

q = 61.71 KN/m

Explanation:

We know that shear force at one end of the beam is;

F = wl/2

Where;

w is the uniformly distributed load and l is the span.

Thus, in this question, q is the distributed load, so;

F = ql/2

Area of beam section = breadth x depth

In this case,

Area = 200 × 250 = 50000 mm²

We are given allowable shear stress of τa=1.8MPa. This can also be written as τa = 1.8 N/mm²

We know that formula for average shear stress is;

τ_avg = Force/Area

Thus, Force = τ_avg x Area

However, we are given maximum allowable shear stress as 1.8and we know that; τ_max = 1.5 × τ_avg

Thus, τ_avg = 1.8/1.5 = 1.2

Hence;

Force = 1.2 × 50,000 = 60000 N

We need

So from the earlier equation F = ql/2,we can get; 60000 = ql/2

ql = 120000 - - - - - (1)

Now, to the bending stress, we know that section modulus of a rectangular section is;

Z = bd²/6

So,for this question, we have;

Z = (200 × 250²)/6

Z = 2083333.33 mm²

Maximum bending moment of a simply supported beam is wl²/8

So,in this case, M = ql²/8

So,formula for maximum bending stress = M/Z

So, plugging in the values, we have ;

σ_max = (ql²/8) / 2083333.33

We are given σ= 14 MPa or 14 N/mm²

Thus;

14 = (ql²/8) / 2083333.33

ql² = 14 × 2083333.33 × 8

ql² = 233333332.96 - - - eq(2)

From equation 1,we saw that;ql = 120000.

Putting this for ql in equation 2,we will get;

120000l = 233333332.96

l = 233333332.96/120000

l = 1944.44 mm

So from eq 1,q = 120000/l

q = 120000/1944.44

q = 61.71 KN/m

6 0
3 years ago
What are some tasks commonly performed in Environmental Service Systems jobs? Check all that apply.
lorasvet [3.4K]

Answer: a,c,d,f

Explanation:

5 0
4 years ago
The critical resolved shear stress for iron is 27 MPa (4000 psi). Determine the maximum possible yield strength for a single cry
jasenka [17]

Answer:

Answer is mentioned below.

Explanation:

Answer: Calculation of maximum yield strength for a single crystal of Fe pulled in tension is shown in the image attached .

value of max. Yield strength= 54MPa

7 0
4 years ago
A spur gearset has a module of 6 mm and a velocity ratio of 4. The pinion has 16 teeth. Find the number of teeth on the driven g
levacccp [35]

Answer:

NG=64 teeth

dG=384mm

dP=96mm

C=240mm

Explanation:

step one:

given data

module m=6mm

velocity ratio VR=4

number of teeth of pinion Np=16

<u>Step two:</u>

<u>Required</u>

1. Number of teeth on the driven gear

N_G=N_P*V_R\\\\N_G=16*4\\\\N_G=64

<em>The driven gear has 64 teeth</em>

2.  The pitch diameters

The driven gear diameter

d_G=N_G*m\\\\d_G=64*6\\\\d_G=384

<em>The driven gear diameter is 384mm</em>

The pinion diameter

<em />d_P=N_P*m\\\\d_P=16*6\\\\d_P=96<em />

Pinion diameter is 96mm

3. Theoretical center-to-center distance

C=\frac{d_G+d_P}{2} \\\\C=\frac{384+96}{2} \\\\C=\frac{480}{2}\\\\C=240

The theoretical center-to-center distance is 240mm

5 0
3 years ago
Other questions:
  • Tadpoles raised in water with atrazine levels of 0.1 ppb should produce a higher percentage of male frogs with gonadal abnormali
    13·1 answer
  • Air enters a tank through an area of 0.2 ft2 with a velocity of 15 ft/s and a density of 0.03 slug/ft3. Air leaves with a veloci
    5·1 answer
  • The force on a cutting tool are 2600N vertically downward and 2100 horizontal. Determine the resultant force acting on the tool
    12·1 answer
  • A worker's hammer is accidentally dropped from the 20th floor of a building under construction. With what velocity does it strik
    5·1 answer
  • The development of various technologies led to many historic events. Use information from the Internet to describe one major his
    5·1 answer
  • Water at 15°C (rho = 999.1 kg/m^3) from a garden hose fills a 1.5-L container in 2.5 s. Assume that the volume flow rate, tempe
    14·1 answer
  • The brakes are being bled on a passenger vehicle with a disc/drum brake system. Technician A says that the drums should be remov
    14·1 answer
  • Given a mass-spring-damper system. The impulse response of strength 1 can be obtained from a unit step response by: ______
    14·1 answer
  • HELP PLEASE ! TYYYY!!!!!!!!!!!!!!!!!!!!!!!!
    13·1 answer
  • Which of these items is least likely to cause an exhaust emission test failure as of a result of excessive nox emissions? a) poo
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!