An airship with a displacement volume of 2400 cu – m and total mass of 1.6 tonnes is released into the atmosphere with a polytropic index equal to 1.24. Assuming that the airship displacement volume does not change with altitude, determine (i) the temperature lapse rate of the atmosphere. (ii) the maximum height above sea level to which the aircraft can rise. NB: Atmospheric temperature and pressure at sea-level are 15°C and 101kPa, respectively. For air, the characteristics gas constant is equal to 287J/kg.

An airship with a displacement volume of 2400 cu – m and total mass of 1.6 tonnes is released into the atmosphere with a polytropic index equal to 1.24. Assuming that the airship displacement volume does not change with altitude, determine (i) the temperature lapse rate of the atmosphere. (ii) the maximum height above sea level to which the aircraft can rise. NB: Atmospheric temperature and pressure at sea-level are 15°C and 101kPa, respectively. For air, the characteristics gas constant is equal to 287J/kg.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

The figure below shows a spherical buoy, having a diameter of 1.7 m and weighing 6500 N, anchored to the floor of a lake by a cable. The density of the lake water is 10³ kg/m³ and g = 9.81 m/s². Determine the force exerted by the cable, in N. Water p = 10³ kg/m³ Buoy Cable
Calculate the mass of air (in kg) contained within a room 10 m long, 8 m wide, and 3 m high. Assumeatmospheric pressure and temperature of 79,501 N/m2 and 20°C, respectively.
The Louisiana Superdome has an interior volume of 125 million ft3, covered by a 440,000 ft² roof. On a particular day, the interior air pressure gave a manometer reading of 19 inches mercury (pHg = 13.6 g/cm³). Local atmospheric pressure is 102 kPa. 1. kg Calculate the mass of the air inside, assuming an average temperature of 20 °C. 2. kN Calculate the net force applied to the roof by the interior/exterior air (do not account for the weight of the roof). Assume the roof is flat.
A pilot notices that the barometric pressure outside his aircraft is 85 kPaa. The airport below the planereports a barometric pressure of 100 kPaa. If the average air density is 1.15 kg m /m 3 and the local gravityis 9.75 m/s 2 , determine the height of the aircraft above the ground in meters.
I need the answer as soon as possible
The barometer of a mountain hiker reads 729.66 mbars at the beginning of a hiking trip and 644.42 mbars at the end. Neglecting the effect of altitude on local gravitational acceleration, determine the vertical distance (meters) climbed. Assume an average air density of 1.20 kg/m3. (Use 2 decimal places for the final answer.)
In an exothermic process, the volume of a system expanded from 213 mL to 2135 mL against a constant pressure of 752 torr. During the process, 29.1 calories of heat energy were given off. What was the internal energy change for the system in joules?
A manometer attached to a gas tank indicates that the pressure within is greater than the surrounding atmosphere. The manometric fluid is mercury, which has a density of 13.6 g/cm3. The manometer shows a reading of 54 cm. The atmospheric. pressure is 101 kPa, and the acceleration due to gravity is 9.8 m/s2
A spring exerts a force of 17 lbf on a piston inside a piston cylinder device. The mass of the piston is 3.5 lbs and the cross sectional area of it is 0.00018 ft^2. Determine the pressure inside the piston cylinder device.
barometric pressure or 1 atmospheric 1 pressure is equal to 0 kgf/cm2 O 1.019 kgf/cm2 O 0.9 kgf/cm2 O 1 kgf/cm2 O