Delta Wing Aircraft Specifications

(do the necessary assumptions if needed)

Wing Area: 585 m²

Wing Span: 32 m

Taper ratio: 0.019

Leading Edge Sweep angle: 65.57°

Wing loading: 4070 N/m²

Cruise Mach Number: 3

Cruise altitude: 22.5 km

(L/D) _cruise = (L/D) _max = 9

Calculate the cruising angle of attack?

Write down the cruising drag polar equation?

Using the drag polar found in (b), calculate (C_L^1/2/C_D) _max and corresponding Mach number maximizing (C_L^1/2/C_D).

Calculate an overall heat loss coefficient for a plate at 50℃, facing up, when exposed to an ambient temperature of 10℃. The plate emittance is 0.88, the dew point is 3℃, and the wind heat transfer coefficient is 25 W/m2℃. Assume time is midnight

for the bourdon tube gauges , how to calibrate the pointer to zero ?

How do you find the specific volume of R-134A at P=700 kPa and T= 120 C? I know it is from the tables but I can't seem to figure out how to get the number: v = 0.43358 m^3/kg

all journal bearing has a shaft diameter=1.25in and suppports a load of 1200lbf. the bushing is 1.25-in long and has a bore diameter=1.25in. shfat speed=1500 rev/min. average film temperature=115.4^o​F and SAE grade 30 lubricant is used. average clearance =0.001125 in. Find

a) magnitud and location of min oil-film thickness

b) total lubricant volumetric flow rate

c) max oil-folm pressure and its angular location

d) power loss

A 5 MW gas turbine generating set operates with two compressor stages with intercooling between stages; the overall pressure ratio is 9/1. A high pressure (HP) turbine is used to drive the compressors. A low pressure (LP) turbine drives the generator (which generates the 5 MW). The temperature of the gases at the entry to the HP turbine is 650 °C and the gases are reheated to 650 °C after expansion in the first turbine (before entering the second turbine). The exhaust gases leaving the LP turbine are passed through a heat exchanger to heat the air leaving the HP stage compressor (before they enter the combustion chamber). The compressors have equal pressure ratios and intercooling is complete between stages. The air inlet temperature to the unit is 15 °C. The isentropic efficiency of each compressor stage is 0.8 and the isentropic efficiency of each turbine stage is 0.85. In the heat-recovery heat exchanger, the exhaust from the low pressure turbine is heating the exhaust from the high pressure compressor to 420 °C, before the LP turbine exhaust is vented and the HP compressor exhaust (now exiting the heat recovery heat exchanger) is sent to the combustion chamber (to be heated to 650 °C). The heat exchangers (the intercooler, heat recovery heat exchanger and the combustion chambers) all operate at constant pressure. Pressure losses and changes in kinetic and potential energies can be neglected.

a)Draw a diagram of this cycle.

b)Calculate the cycle efficiency.

c)Determine the mass flow rate through the process.

A pair of helical gears is used with the following properties: 14.5 degree normal pressure angle, 45 degree helix angle, diametral pitch of 8 teeth/in, 1.5-in face width, and normal diametral pitch of 11.31 teeth/in. The pinion has 12 teeth and a 1.5in pitch diameter, and the gear has 32 teeth and a 4.0 in pitch diameter. Both gears have full-depth teeth. If a right-hand pinion and a left hand gear are placed in mesh, find the transverse contact ratio, the normal contact ratio, the axial contact ratio, and the total contact ratio.

An anthracite coal has the following composition: C = 84.7 N = 1.5 A= 5.8 H = 2.9 S =0.8 W = 2.7 O = 1.6 Calculate for complete combustion per pound of coal: a)Theoretical weight of oxygen required, b) Actual air needed if 35 % in excess, can you use more or less oxygen

Semicolons and Colons
Insert semicolons and colons where necessary in the following sentences. Some sentences, however, may not require additional punctuation.

1. David, Richard approved the proposal you can start right away.
2. I spoke with engineers from Weston this morning we should have the blueprints this afternoon.
3. I would seriously consider his recommendations he is our most qualified technician.
4. Please schedule Darby McClain for a root-planing procedure and inform her of our scheduling policies.
5. I’ve surveyed the job site, completed the drawings, and prepared an estimate but, Robert, I would like you to review Section C of the proposal.
6. I removed nonlicensed software, and the error was corrected.
7. Charlie hasn’t felt well all week nevertheless, he refuses to leave work.
8. We will contact the pipe fitters and plumbers to obtain an estimate for you.
9. We had several setbacks this week however, the problems have been worked out.
10. The purpose of punctuation marks, of course, is to clarify the meaning intended by the writer.
11. Jim, our new employee, will be the project manager Michael, whom you know, will be the foreman of the electrical crew and Kyle will be the contractor from Alan’s Heating and Cooling.
12. My company sends me to our locations in St. Louis, Missouri Quincy, Illinois and Des Moines, Iowa to install and service hardware devices as needed.
13. When dealing with system-user complaints, Andy performs a number of routine tasks namely, provide instructions to system users, test PCs and networks, and provide computer-size capacity and configuration recommendations for his network supervisor.
14. I am convinced that Jim would be an excellent manager that is, he has my recommendation.
15. Amy, I wanted to give you this news myself The doctor has hired a new assistant to help you in the afternoons.
16. Robert and Karen from St. Louis will be here to visit our facility this Friday, so please make them feel welcome.
17. I need to see the following employees before they leave today Susan Olsen, Alice McCauley, and Robert Baker.
18. The electrical crew is scheduled to arrive at 8 45 A.M.
19. Have you had a chance to read Engineering Graphics Methods and Applications?
20. For the next two weeks, you will be working with the electricians at Lake Avenue Power Plant.

Triton Manufacturing Company began June 2016 with 10,000 units of inventory in process, 20 percent completed. During the period, 50,000 units were completed and transferred to the finished goods warehouse. Ending inventory consisted of 5,000 units, 70 percent completed. Materials were added at the beginning of the process. Required: Calculate the equivalent units for: I. Materials costs under the weighted average process cost method. II. Conversion costs under the weighted average process cost method. III. Materials costs under the FIFO process cost method. IV. Conversion costs under the FIFO process cost method.

This is a fluid dynamics problem. specially vortex dynamics.

Please, Explain how a secondary flow and vortex turning are related in an open channel flow.

please help to me using picture & equation.

-An initially empty canister with volume of 0.2m3 f filled with carbon dioxide from a line at 1000 kPa, 500K. Assume the process is adiabatic and the flow continues until it stops by itself. Use constant heat capacity to find the final mass and temperature of the carbon dioxide in the canister and the total entropy generation by the process.

1. Methane and oxygen exist in a stoichiometric mixture at 500 kPa and 298 K. They are ignited and react at constant volume. Combustion is complete.

a. Find the heat removed from the system per kmol of fuel if the final products are at 1500 K.

b. What is the final pressure?

c. Explain what assumptions made in this calculation are less accurate for constant volume combustion than for the constant pressure combustion we have studied before.

d. If the reaction above occurs in an insulated container, find the final temperature and pressure of the products.

e. If the same mixture reacts at constant pressure, find the final temperature.

f. Suppose the products from both #2 and #3 then undergo adiabatic expansion in a pistoncylinder device. Find the total work done for both processes in each problem and draw the P-v and T-s diagrams (two diagrams that include two processes for each problem).

g. If one approach produces more work than the other using the same amount of fuel, use the first and second law to explain why.

Thermodynamics

An insulated piston/cylinder device contains ideal CO2 gas at 800 kPa, 300 K, which is then compressed to 6 MPa in a reversible adiabatic process. Determine the final temperature and the specific work during the compression process using:

(a) Ideal gas tables A.8,

(b) Constant specific heats A.5.

In order to select the correct material to make Intake valves and Exhaust values of automobile engine.

a). List the requirements of service functions and working conditions of these Intake valves and Exhaust values.

b). Based on your answer in a), select the correct material to make these Intake values and Exhaust valves. List the material name and properties (e.g, E, Y.S., etc). Explain your reasons of selecting it.

c). Based on your answer in a) and b), when and what heat treatments are required to manufacture these Intake values and Exhaust values.

(Materials Science)