The soft landing phase of a lunar module descending on the moon can be modeled assin off shown in Fig. 2.26. The thrust generated is assumed to be proportional to m, where m is2.20FIGURE 2.26mgThrust = kmLunar surfacethe mass of the module. Then the system can be described by my = -km - mg, where g 2.21is the gravity constant on the lunar surface. Define state variables of the system as x₁ = y,x2 = y, x3 = m, and u = m. Find a state-space equation to describe the system.Find the transfer functions from u to y₁ and from y₁ to y of the hydraulic tank systemshown in Fig. 2.27. Does the transfer function from u to y equal the product of the twotransfer functions? Is this also true for the system shown in Fig. 2.16? [Answer: No,

Given data my··=-km·-mg ....... (1) x1=y ..... (2) x2=y·…

Answered: 2.20 The soft landing phase of a lunar…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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The outer radius of a coaxial cylindrical electrode system is given in 32 cm. The system is the most suitable sized according to puncture. Penetration of the insulator between the cylindrical layers Its strength is Ed = 72 kV / cm and the relative dielectric constant of the insulator is Er1 = 10 a) - Calculate the capacity of the system and get the highest possible application without puncture to the system. Please respect what the voltage should be b) - For the case of U = 120 kV application, the maximum and minimum occurrence on the system Calculate the electric field values?
The outer radius of a coaxial cylindrical electrode system is given as 38 cm. The system is the most suitable sized according to puncture. Penetration of the insulator between the cylindrical layers Its strength is Ed = 78 kV / cm and the relative dielectric constant of the insulator is r1 = 40. a) - Calculate the capacity of the system and get the highest possible application without puncture to the system. Please respect what the voltage should be. b) - For the case of U = 180 kV application, the maximum and minimum occurrence on the system Calculate the electric field values? c) -Calculate the actual distance (d) of the system, the utilization factor (n) of the electrode aperture (alpha)? (Ɛ0 = 8,854x10-12 F / m)
A rigid bar AB 9 m long is suspended by two vertical rods at its end A and B and hangs in horizontal position by its own weight. The rod at A is brass: L = 3 m, A = 1000 mm^2, E = 100,000 MPa. The rod at B is steel: L = 5 m, A = 445 mm^2, E = 200,000 GPa. At x distance from A, a vertical load P = 4300 N is applied. a)What is the value of distance x? b)What is the stress at the brass? c)What is the stress at the steel?
High Voltage Technique For the most puncture-related arrangement of a concentric spherical electrode system with a voltage of 100 kV to be applied between the electrodes and with Ed=80 kV/cm (insulator puncture strength), Emax = 0.6. Ed a) Inner and outer sphere radii, b) Maximum and minimum field strengths, c) Equivalent electrode opening and utilization factor, d) Its capacity (Ɛ0=8,854x10-12 F/m, Ɛr=1) and insulator volume, e) By keeping the outer sphere radius constant, calculate the inner sphere radius value range that can be used in the system without discharge. ANSWERS: a) r1=4.16 cm, r2=8.32 cm b) Emax=48 kV/cm, Emin=12 kV/cm c) α=2.08 cm, η=0.5 d) C=9.257 pF, Vinsulator=2110 cm3 e)1.53<r1<6.8 cm
An electric wire having a mass of 0.5 kg/m along the horizontal is suspended between supports of the same elevation which is 50m apart. If the maximum tension in the wire is 800N, find a. the minimum tension b. the sag c. the length cable
A thin insulator rod of mass m and length L=40 cm, as shown. thresholdon the surface of the plane and in an outer bend from the rails placed on the edges. It slides frictionlessly with a constant velocity of V=0,8 m/s. Itrails at the lower edge of the inclined plane. to each other with a rail parallel to the bar connected so that the bars and rails are closed, a rectangular frame they form. Rail plane is Ɵ=50° angle with horizontal plane (xz plane) is doing. Before the rod begins to weld, it must be tilted above the inclined plane. It stood above the lower edge of the plane at a distance of S=4m. Inclined plane and the rod shows a magnetic field of uniform B=0,5i+0,8j+0,20k(T) is under the influence. When the bar starts to slide, at t=3s moments the bar, the edge magnetic passing through the frame surface formed by the rails and the rails at the bottom edgewhat is flux?
A cylindrical drum, 750 mm in diameter and 543 mm high, is filled with a fluid whose density is 570 kg/m3. Determine: (a) the total volume of the fluid in m3; (b) its total mass in kg; (c) it's specific volume in m3/kg; (d) its specific weight in N/m3 if g = 9.8 m/s2.
Copper wire has a resistivity ρ = 1.7 × 10-8 Ω⋅m when at 20°C and it has a temperature coefficient α = 3.9 × 10-3 K-1. A solid cylinder of copper of length L = 85 cm and diameter D = 3.5 mm has one end held at T1 = 14°C and the other end is held at T2 = 210°C. The temperature increases linearly between the two ends of the cylinder. A) Consider a thin slice of the copper cylinder of thickness dx that is located a distance x from the left end of the cylinder. Write an equation for the temperature of this slice in terms of the variables x, L, T1, and T2. B) Determine the total resistance in milliohms.
1 - A square chip, with side ? = 5 mm, operates under isothermal conditions.The chip is positioned on a substrate so that its side and bottom surfaces are thermally insulated, while its top surface is exposed to theflow of a refrigerant at ?∞ = 15°C. From reliability considerations, the chip temperature cannot exceed ? = 85°C. The refrigerant being air, with a convection heat transfer coefficientcorresponding ℎ = 200 W/(m2K), what is the maximum allowable power for the chip? Since the coolant is a dielectric liquid for which ℎ = 3000 W/(m2K), what is the maximum allowed power?
The outer radius of a coaxial cylindrical electrode system is given in 32 cm. The system is the most suitable sized according to puncture. Penetration of the insulator between the cylindrical layers Its strength is Ed = 72 kV / cm and the relative dielectric constant of the insulator is Er1 = 52 c) -Calculate the actual distance (d) of the system, the utilization factor (n) of the electrode aperture (alpha)? (E0 = 8,854x10-12 F / m)
Q4. A Transmission Line has a span of 250 meters between two level supports. The conductor has a cross-sectional area of 1.29 cm2, weighs 1170 kg/km and has a breaking stress of 4218 kg/cm2. Calculate the sag for a safety factor of (5), allowing a wind pressure of 122 kg per square meter of projected area. What is the vertical sag?
A) Sketch the complex plane and locate poles for 2 cases: 2 Second Order underdamped systems where both systems have the same settling time, but system #1 has a larger overshoot. B) Sketch the time response for each system in part A to a unit step input. Show clearly which system is 1 and 2. Show the relative values of the overshoot for both systems, the overshoot time, damped natural frequency and time to steady state .

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2.20 The soft landing phase of a lunar module descending on the moon can be modeled as shown in Fig. 2.26. The thrust generated is assumed to be proportional to m, where m is HOUS 1.26 f mg Thrust = km Lunar surface 02 the mass of the module. Then the system can be described by my=-km-mg, where g