Draw a Koch Snowflake fractal image using MATLAB programming.

I'm pretty new to MATLAB and im not too familar with how all the plotting and drawing functions work.

2. The surface of a 0.1% C steel gears is to be hardened by carburizing. In gas carburizing, the gears are placed in an atmosphere that provides 1.2% C at the surface of the steel at a high temperature. Carbon then diffuses from the surface into the gear. For optimum properties, the steel must contain 0.45% C at a depth of 0.2 cm below the surface. Design a carburizing heat treatment schedule that will produce these optimum properties. Assume that the temperature is high enough (at least 900°C) so that the iron has the FCC structure.

1) A reciprocating compressor has two stages with inlet air going into LP stage at 1 bar, 16°C and at the rate of 12 m3/min. Air is finally delivered at 7 bar and there is perfect intercooling at optimum pressure between the stages. The index for compression is 1.25 and compressor runs at 600 rpm. Neglecting clearance volume determine intermediate pressure and total power required.

2) A reciprocating compressor of single stage and double acting type has free air delivered at 14 m3/min measured at 1.013 bar, 288 K. Pressure and temperature at suction are 0.95 bar and 305 K. The cylinder has clearance volume of 5% of swept volume. The air is delivered at pressure of 7 bar and expansion and compression follow the common index of 1.3. Determine the volumetric efficiency with respect to free air delivery.

3)1)Single stage impulse turbine has equal blade angles and nozzle angle of 15°. Determine the maximum possible blade efficiency if the blade velocity coefficient is 0.85. Determine the blade speed to steam velocity ratio if the actual blade efficiency is 90% of maximum blade efficiency.

4) The velocity of steam entering a simple impulse turbine is 1000 m/s, and the nozzle angle is 200. The mean peripheral velocity of blades is 400 m/s and the blades are symmetrical. If the steam is to enter the blades without shock, what will be the blade angles. Neglecting the friction effects on the blades, calculate tangential force on the blades and the diagram power for a mass flow of 0.75 kg/s. Estimate axial thrust & diagram efficiency.

5)1)Single stage impulse turbine has equal blade angles and nozzle angle of 15°. Determine the maximum possible blade efficiency if the blade velocity coefficient is 0.85. Determine the blade speed to steam velocity ratio if the actual blade efficiency is 90% of maximum blade efficiency.

Explain why is euler theory good mathematically but not equally good mechanically. Give one example to prove your point.

project about automotive cruise control system

AEROSPACE ENGINEERING QUESTION

1) Calculate the synodic period of Venus with respect to Earth.

I'm not sure exactly how to do this. Our professor hasn't given us a formula or anything. Can someone please give me a hand. Thank You.

EDIT: I FIGURED IT OUT. :)

In an ideal Rankine cycle with reheat, superheated steam vapor enters the turbine at 10 MPa and
480 °C, while the condenser pressure is 6 kPa. Steam expands through the first-stage turbine to
0.7 MPa and then is reheated to 480 °C
a) Calculate the total heat addition, net work of the cycle, heat extraction through condenser,
and thermal efficiency of this ideal Rankine cycle with reheat. [25]
b) Calculate the same quantities assuming that the pump and each turbine stage have an
isentropic efficiency of 80%. [25]
c) Draw p-v diagrams for these two cycles  

do only part c)

A 2500-lb automobile is moving at a speed of 35 mi/h when the brakes are fully applied, causing all four wheels to skid. a) Determine the time required to stop the automobile on dry pavement (?k = 0.75). (Round the final answer to two decimal places.) b) Determine the time required to stop the automobile on an icy road (?k = 0.10). (Round the final answer to two decimal places.)

2. Two different hardening processes, (1) saltwater quenching and (2) oil quenching, are used on samples of a particular type of metal alloy. The results are shown in the table below. Assume that hardness is normally distributed. Test whether the variances are statistically different at 90% confidence. (10 pts)

Q2. Two kilograms of air within a piston-cylinder configuration execute a Carnot power cycle between temperatures 750 K and 300 K. The isothermal expansion is associated with a heat input of 60 kJ from the surroundings. The volume after expansion has occurred isothermally is 0.4 m3 . Assuming air behaves as an ideal gas, calculate: (i) thermal efficiency for the cycle (ii) pressure and volume at the beginning of the isothermal expansion, in kPa and m3 , respectively. (iii) the work and heat transfer for each of the four processes, in kJ.

e are choosing material for a round rod. The material must be a metal or alloy. The length of the rod must be close to 1 m, and its cross-sectional diameter must be between 1 mm and 3 mm. Its natural frequency of vibration, f, should be as low as possible. (a) Clearly list the constraints, objective, and free variables. (b) What is the performance index of the material? (c) What are the best 2 material candidates?

e are choosing material for a round rod. The material must be a metal or alloy. The length of the rod must be close to 1 m, and its cross-sectional diameter must be between 1 mm and 3 mm. Its natural frequency of vibration, f, should be as low as possible. (a) Clearly list the constraints, objective, and free variables. (b) What is the performance index of the material? (c) What are the best 2 material candidates?