What would be the important criteria and constraints to consider on a transatlantic flight?
1 answer:
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Answer:
battery life in year = 9 years and 48 days
Explanation:
given data
Battery Ampere-hours = 1.5
Pulse voltage = 2 V
Pulse width = 1.5 m sec
Pulse time period = 1 sec
Electrode heart resistance = 150 Ω
Current drain on the battery = 1.25 µA
to find out
battery life in years
solution
we get first here duty cycle that is express as
duty cycle = ...............1
duty cycle = 1.5 ×
and applied voltage will be
applied voltage = duty energy × voltage ...........2
applied voltage = 1.5 × × 2
applied voltage = 3 mV
so current will be
current = ................3
current =
current = 20 µA
so net current will be
net current = 20 - 1.25
net current = 18.75 µA
so battery life will be
battery life =
battery life = 80000 hours
battery life in year =
battery life in year = 9.13 years
battery life in year = 9 years and 48 days
Answer:
The minimum diameter is 1.344 in
Explanation:
The angular speed of the driveshaft is equal to:
Where
N = rotational speed of the driveshaft = 2900 rpm
The torque in the driveshaft is equal to:
Where
P = power transmitted by the driveshaft = 134 hp = 73700 lb*ft/s
The minimum diameter is equal to:
Where
T = shear stress = 6100 psi
τ = 242.68 lb*ft = 2912.16 lb*in