Youve been retained by NASA to design a fish tank quality pr

You\'ve been retained by NASA to design a fish tank (quality protein source) for a proposed Mars orbit way-station for the up and coning Mars expeditions. The way station design will be a 300-foot diameter circular ring. To simulate gravity, the way-station will rotate at a revolution per minute. The station\'s \"artificial gravity\" is determined by normal acceleration, by shown below. a_n = V^2/r The fish tank will be bolted to the outside wall of the way-station. The water in the tank will be 20 feet deep. The tank is open to the atmospHere, Determine a_s the way-station artificial gravity. Determine y_s the specific weight of the water in apace. Determine the pressure at the bottom of the tank. Name the two fish in the tank.

Solution

a) Acceleration shall be generated due to rotation of the ring.

Acceleration a = V² / r

Velocity V = x D x N / 60

D-Ring diameter, N - No. of rotation per minute(rpm)

Diameter=30 feet = 9.144 meters

Velocity V = x 9.144 x 4 / 60 = 1.92m/s

Hence acceleration, a = 1.92²/(9.144/2) = 0.8 m/s²

b) Specific weight = Density x acceleration = 1000 x 0.8 = 800 N/m³

c) Static pressure at bottom of tank

= Density × acceleration x Depth

=1000 x 0.8 x 6.096 (20feet = 6.096 m)

=4876 Pa = 4.87 Kpa

d) Space fish (Anonymous)