An aerospace company is developing a new fuel additive for commercial airliners.The additive is composed of three ingredients:X,Y, andZ. For peak perfor-mance, the total amount of additive must be at least 6 mL/L of fuel. For safetyreasons, the sum of the highly flammableYandZingredients must not exceed2.5 mL/L. In addition, for the additive to work, the amount ofZmust be greaterthan or equal to twice the amount ofY, and the amount ofXmust be greaterthan or equal to three quarters of the amount ofY. If the cost per mL for theingredientsX,YandZis 20 cents, 3 cents, and 5 cents, respectively, use MSexcel to determine the minimum cost of the additive mixture for each liter of fuel.

How does the ppbRAE operate and why is it not able to measure individual gases?

what is system functional decomposition ?

if we add spring and damper in series and parallel

1-Sketch and explain difference among typical metal, ceramic and polymer behavior through stress-strain diagram.Sketch and explain difference among typical metal, ceramic and polymer behavior through stress-strain diagram.

Text Book- The Science and Engineering of Materials, Askeland et al. (seven edition)

Home Work- # 6 for Chapter 6

please sovle the question and type the answer in the computer

thanks,

Question 6

Young's modulus, yield strength, ultimate tensile strength and elongation at fracture can ALL be determined by a tensile test.

True

False

Compare and contrast spin recovery procedures of two different aircraft. What makes the recoveries different for each aircraft?

A spring-loaded piston-cylinder device contains 0.5 kg of water initially at 90℃ and with an initial quality of 20.9%. At its initial state, the spring is relaxed and does not exert any force on the piston. The device is now heated until the pressure is 400 kPa and the new temperature is 250℃.

What is the boundary work done by the water during this process?

kJ

What is the total amount of heat transfer into the system?

kJ

BONUS: If the device has a cross-sectional area of 0.14 m2, what is the spring constant of the spring in this device?

kNm

1)calculate the polar moment of inertia of a wire with a 2 mm diameter

2) what is the difference between the elastic modulus (E) and the shear Modulus (G) ?

As part of a heat treatment process, cylindrical, 304 stainless steel rods of 100 mm diameter are cooled from an initial temperature of 500°C by suspending them in an oil bath at 30°C. If a convection coefficient of 500 W/m2K is maintained by circulation of the oil, how long does it take for the centerline of a rod to reach a temperature of 50°C, at which point it is withdrawn from the bath? If 10 rods of length L = 1 m are processed per hour, what is the nominal rate at which energy must be extracted from the bath (the cooling load)?

Consider a block of size 30 mm x 20 mm x 10 mm made of two metallic materials, the stronger material for the bottom half of the block and the weaker material for the top half. The displacements of 8 material points of the block have been measured after certain loading and they are given in the Table below.

(a) Determine the distributions of displacements, strains and stresses in the block, in the xyz co-ordinate system. Choose two suitable isotropic materials.

(b) Determine the stresses at the corner points of the plane at the interface of the two materials. Using these values, determine the stress distributions over that plane, and determine the maximum value of all these stresses (and its type and direction of action). Also determine the maximum value of the principal stress on this plane.

(c) Determine the stresses and strains in the directions of any two diagonals of the block, at each of the corner points of the block. Calculate also the changes in the lengths of these two diagonals.

Determine the changes in the maximum shear stress and octahedral shear stress at each of the corner points of the interface plane, and the changes in the lengths of the two diagonals after deformation due to a +10% change in material properties. Which property has more influence on the octahedral shear stress at each corner point of the interface?

Check whether the interface will fail using Tresca and von Mises failure criteria.

The elasticity of the top material is 105 GPa, G = 39 GPa, v=0.346. Bottom material E = 195 GPa, G = 77 GPa, v = 0.27

At a time on the sunny day of July 21, the sun shining onto the wall and window at an incident angle of 30 while the incident angle onto a horizontal surface is measured at 45. Assume the window glass have the properties of τD = 0.7; τd = 0.6; αD = 0.1; αd = 0.3. The emissivity of the wall is 0.9. Calculate:

Total solar radiation absorbed by the wall;

Total solar radiation into the room via window;

Total solar radiation reflected away by the window glass

You are a manager and are asking a member of your team to take on an additional project. Would you pay the team-member at the completion of the project or would you begin to structure payments that become effective right from start of the project? What Behavioral concept would you draw on in structuring the payments?

solve using Dynacam and write outputted polynomial equations

Design a single dwell cam to move a follower dwell from 0 to 100 deg, rise 3 inches in100 deg and fall 3 inches in 160 deg. the total cycle must take 2 sec. choose suitable functions for rise and fall to minimize acceleration. Plot SVAJ diagram