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Balsa wood has been used for many years as a model making material. However, light weight modern, alternatives are also available. One such material is depron foam. It is a form of polystyrene sheet. It is lightweight and does not absorb moisture making ideal for model aircraft. It is available in two colours - grey and white. It is also available in three thickness 2, 3 and 6mm. Depron is a polystyrene foam, popular as a material for the manufacture of fast food trays and packaging. It is much lighter than balsa wood and can be cut with a sharp blade, sawn with a fine.
toothed mod- elling saw or fretsaw with a very fine blade. It can be sanded and smoothed using the usual files and abrasive papers (eg. wet and dry paper). Heat can be used to shape it although great care should be taken. Glue guns can be used to join depron or zepron although solvent free glues can also be used effectively. Using Figure 1.9 in the text-book, develop a system of equations and solution for free deflection of a morphing wing in the d33 operating mode. (Hint: Refer to class formulations on piezoelectric characterizations in Chapter 3). Show the constraint differences between 2, 3 and 6mm of Depron foam.
With reference to basic constructional features, contrast the methods of compression employed by positive displacement and dynamic air compressors.
The system on site is a pressure sand filter, with a service curve. The filter is backwashed using the feed pump, at a higher flow rate, shown as backwash curve. What is the speed of the pump to achieve the service and backwash flow rates ?
Applied Loads, Young's modulus, Poisson's ratio, The Young's modulus and the Poisson's ratio for copper are 124.8 GPa and 0.36 respectively. When a tensile load is applie to a 1.5cm diameter copper rod
Find the stoichiometric A/F ratio (by mass) for the combustion of benzene (C6H6). Compute the actual A/F ratio and do a wet and dry analysis of the products by volume at a mixture strength of 95%.
Motor coming to rest, A motor is running at 12 rpm and the switch is flipped and cuts the power. The rotor weighs 75 lbs.
Determine the coordinates x' and y' of the centroid C of the area shown in the figure and calculate the moments of inertia of the area shown, about ox and oy axes.
All calculations and assumptions must be provided together with a full explanation of all the terms
A heat pump with a COP (coefficient of performance) of 2.8 is used to heat an air-tight house. When running, the heat pump consumes 5 kW of power
Why do you suppose that service jobs have lower productivity than manufacturing jobs? How can a company gain a competitive advantage by having higher productivity than its compettitors have?
An ideal vapor-compression refrigeration system operates at steady state with Refrigerant 134a as the working fluid. Superheated vapor enters the compressor at 30 lbf/in2, 20F, and saturated liquid leaves the condenser at 140 lbf/in2. The refriger..
Prepare a Journal paper on Renewable Energy
Complex loading (bending and compression), A steel chimney is 28m high, 1.4m external diameter, and 20mm thick. It is rigidly fixed at the base and is acted upon by a horizontal wind pressure of intensity 1.
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