Geometric Dimensionig and Tolerancing

1. Professions (desiner, manufacturing engineer, machinist, machine programmer, inspector, tool designer) and trades, that how affected by dimentions?

2. How to reduces cost? by design through teamwork (inspector, machinist, engineer)

Kate deposits P5,000 to her bank account every year when she was in high school for four years to prepare for her college degree. She took an engineering course and since then, she stopped depositing to her bank account. Right after graduation (she graduated on time), she got a job that pays P250,000 a year. If she continues to deposit to the same bank account P50,000 every year for 10 years, calculate the future worth after 30 years if the deposits are made at the end of each year and the bank pays 2% interest per year

Search the Internet and locate a job posting from a Part 121 or 135 carrier. After locating your position, read and review the required maintenance organization management positions in AC 120-16F, Chapter 4. How does the position and job description that you identified align with one of the required positions in the advisory circular? How does it differ?

(a) While shopping at a thrift store, you purchase a cheap water-heater. The heater has a total surface area of 3 m3 which you decide to insulate using a special kind of insulation material with conductivity of 0.08 W/m K. For normal operation, you want to maintain the inside surface of the insulation at 75C while the outside is at 20C. Additionally, you want to limit heat transfer loss to 200 W. Given your requirements, how thick does the insulation need to be?

(b) The heaters on a Space X spacecraft suddenly fail. Given your expertise insulating thrift store waterheaters, you are called in to help. You discover that without the heaters, the spacecraft is losing heat via radiation at a rate of 100 kJ/h. The onboard systems generate heat at 75 kJ/h. The air within the spacecraft is at a temperature of 25C and a pressure of 100 kPa, and occupies a 10 m3 volume. Your job is to determine how long it will take before the air temperature within the spacecraft reaches - 20C.

Compare and differentiate between metal matrix composite and metal alloys in term of structure, properties and applications.(6marks)

Explain the general concept behind rotary aircraft structure and construction methods.
And describe the airworthiness requirements applicable to the design and construction of a typical rotary aircraft fuselage and system such as phlone, fule storage and symmetry

Calculate the critical size for a cube shaped nucleus which forms by homogeneous nucleation

Technology management is concerned with development, planning, implementation, and assessment of technological capabilities within an organization or entity. A simple way to think of it is management of the use of technology for human advantage.  

What, in your opinion, are the most important aspects of technology management and why? Write a 200 word minimum summary of your thoughts with rationale for your assertions.

Use and include a minimum of two external sources for your assessment.

Write in yr own words introduction and conclusion about rotary turbine aeroplane structure and system of helicopter and aircraft???

Matlab

Create/write a function that takes an input of x and y data, and a string (either linear? or quadratic), sets up a linear system of equations (Ax = b), and solves and plots the model.

Compute the landing ground roll for the CJ-1, assuming the following landing configuration: • CLmax = 2.4 • Using 100% flap deflection and spoilers at touch-down: • Lift coefficient = 0.4 • Drag coefficient =0.20 • Runway braking friction coefficient = 0.30

CJ-1: Wingspan = 53.3ft, wing are = 138ft^2, Normal gross weight = 19815lb, Fuel capacity: 119 gal of kerosen, power plant: two turbofan engines of 3650lb thrust each at sea level, specific fuel consumption = 0.6lb of fuel/(lb Thrust)(h), parasite drag coefficeint CD,0 = 0.02, Oswald efficiency factor e = 0.81

Prediction: Form a hypothesis addressing: Between water and canola oil, what do the density graphs look like plotted together and how are they related to viscosity? Support your hypothesis with some justification including graphs. Specifically, draw a graph of mass vs. density for the two fluids and the other graph should represent the second question in the best way you can.

2) An Elevator with a mass of 2500 Kg rests at a level 10 m above the base of an elevator shaft. It is raised to 100 m above the base of shaft, where the cable holding it breaks. The elevator falls freely to the base of the shaft and strikes a strong spring. The spring is designed to bring the elevator to rest and to hold the elevator at the position of maximum spring compression. Assuming the entire process to be frictionless, calculate:

a) The potential energy of the elevator in its position relative to the base of the shaft.

b) The work done in raising the elevator.

c) The potential energy of the elevator in its highest position relative to the base of the shaft.

d) The velocity and kinetic energy of the elevator just before it strikes the spring.

e) The potential energy of the compressed spring.

a very thin plastic bottle contains 1.5 litres of water. if the bottle is cooled to 2c in a fridge and then put in a container where it is exposed to a convection environment of T=25c and h=2W/m2K, use the lumped heat analysis capacity analysis to estimate the time for the water to warm up to 15c. assume the bottle has a diameter of 8cms and height of 30cms and that it exchanges heat from its side only. take k=0.6 and c=4190. had the bottle been placed in a convective environment where h=10, would a lumped capacity analysis be justified or not ? give your reasons

A student conducts an experiment boiling water in a 3.96L pot. The Diameter of the base of the pot is 7-3/4” and the height is 5-1/8”.

2 Liters of water @ 23°C takes 11 minutes to boil. 500mL of water at 23°C are added to the boiling water. Producing 3-1/4” height of water and 88°C mixture temperature. It then takes till 11:29 for the water mixture to resume boiling. The whole operation takes 1 hour and 26 minutes from start to the pot boiled dry. How much energy was required for this process?