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An airplane uses a pitot-static tube as a velocimeter. The measurements, with their uncertainties, are a static temperature of
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Fluid Mechanics
- Water is boiling in a 25 cm diameter aluminum pan (k=237 W/mK) at 95 degrees C. Heat is transferred steadily to the boiling water in the pan through its .5 cm thick flat bottom at a rate of 800 W. if the inner surface temp of the bottom of the pan is 108 degrees C determine the boiling heat transfer coefficent on the inner surface of the pan and the outer surface temp of the bottom of the pan.arrow_forwardplease solve and show workarrow_forwardplease solve and show workarrow_forward
- A thin plastic membrane separates hydrogen from air. The molar concentrations of hydrogen in the membrane at the innner and outer surfaces are determined to be 0.045 and 0.002 kmol/m^3 respectiveley. The binary diffusion coefficent of hydrogen in plastic at the operation temp is 5.3*10^-10 m^2/s. Determine the mass flow rate of hydrogen by diffusion through the membrane under steady conditions if the thickeness of the membrane is 2mm and 0.5 mm.arrow_forwardCalculate the vertical cross section moment of inertia for Orientations 1 and 2. State which number is the higher moment of inertia using equation 1. Given: b1=1 in, h1=1.5 in, b2=1.5 in, h2=1 in, t=0.0625 in. Then calculate the maximum deflection for a point load of 8 lb on the free end of the beam using equation 2. Given: E=10.1*10^6 psi. 1. ((bh^3)/12) - (((b-2t)(h-2t)^3))/12) 2. S = (PL^3)/(3EI)arrow_forward1-69E The pressure in a natural gas pipeline is measured by the manometer shown in Fig. P1-69E with one of the arms open to the atmosphere where the local atmospheric pressure is 14.2 psia. Determine the absolute pressure in the pipeline. Natural Gas 10 in 6 in FIGURE P1-69E Mercury SG= 13.6 Air 2 in + 25 in Waterarrow_forward
- B 150 mm 120 mm PROBLEM 15.193 The L-shaped arm BCD rotates about the z axis with a constant angular velocity @₁ of 5 rad/s. Knowing that the 150-mm- radius disk rotates about BC with a constant angular velocity @2 of 4 rad/s, determine (a) the velocity of Point A, (b) the acceleration of Point A. Answers: V₁ =-(0.600 m/s)i + (0.750 m/s)j - (0.600 m/s)k a=-(6.15 m/s²)i- (3.00 m/s²)jarrow_forward3 Answer: 002 PROBLEM 15.188 The rotor of an electric motor rotates at the constant rate @₁ = 1800 rpm. Determine the angular acceleration of the rotor as the motor is rotated about the y axis with a constant angular velocity 2 x of 6 rpm counterclockwise when viewed from the positive y axis. α = (118.4 rad/s²)iarrow_forward12 in.. 10 in. PROBLEM 15.187 At the instant considered the radar antenna shown rotates about the origin of coordinates with an angular velocity @ = ai + @j+wk Knowing that (VA) = 15 in./s, (VB), 9 in./s, and (VB), = 18 in./s, determine (a) the angular velocity of the antenna, (b) the velocity of point A. B 10 in. Answers: = (0.600 rad/s)i - (2.00 rad/s) j + (0.750 rad/s)k V₁ = (20.0 in./s)i + (15.00 in./s) j + (24.0 in./s)karrow_forward
- 3. An engine has three cylinders spaced at 120° to each other. The crank torque diagram can be simplified to a triangle having the following values: Angle 0° Torque (Nm) 0 (a) What is the mean torque? 60° 4500 180° 180° to 360° 0 0 (b) What moment of inertia of flywheel is required to keep the speed to within 180 ± 3 rpm? (c) If one cylinder of the engine is made inoperative and it is assumed that the torque for this cylinder is zero for all crank angles, determine the fluctuation in speed at 180rpm for the same flywheel. (a) 3375 Nm (b) 50kgm (c) ±21 rpmarrow_forwardProb 5. Determine the largest load P that can be applied to the frame without causing either the average normal stress or the average shear stress at section a-a to exceed o-150 MPa and 1-60 MPa, respectively. Member CB has a square cross section of 25 mm on each side. 2 m FAC 1.5 m Facarrow_forwardDerive the component transformation equations for tensors shown below where [C] = [BA] is the DCM (direction cosine matrix) from frame A to B. ^B [T] = [C]^A [T] [C]^Tarrow_forward
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