Max Velocity, Time, Distance w/ 2 Thrusters & 1 Upward Thruster

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SUMMARY

The discussion focuses on calculating the maximum velocity, time to achieve this velocity, and distance traveled by a UROV equipped with two forward thrusters and one upward thruster. The UROV has a total thrust of 10 N (5 N per thruster) and weighs 5.68 lbs. The user is attempting to apply Newton's second law (F=ma) to determine acceleration and subsequently calculate drag force at maximum velocity, but encounters difficulties due to multiple unknowns in the scenario.

PREREQUISITES
  • Understanding of Newton's second law (F=ma)
  • Basic knowledge of thrust and drag forces
  • Familiarity with kinematic equations for constant acceleration
  • Concept of weight conversion from pounds to kilograms (1 lb = 0.453592 kg)
NEXT STEPS
  • Calculate the acceleration of the UROV using F=ma with total thrust and weight
  • Determine the maximum velocity using kinematic equations for constant acceleration
  • Calculate the drag force at maximum velocity based on the UROV's design
  • Explore the impact of buoyancy in a chlorine pool on the UROV's performance
USEFUL FOR

Engineers, robotics enthusiasts, and students working on underwater remotely operated vehicles (UROVs) who need to understand the dynamics of thrust, drag, and motion in aquatic environments.

chrispet
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Im working with a UROV and I have a technical scenario that I am supposed to solve. It seems pretty easy but i keep getting ridiculous answers.

Assuming a max thrust of 5 N for 1 motor/propeller, for the forward direction only, use the above information to determine the Max Velocity, the Time to achieve this velocity and the Distance traveled. Please be sure to state all assumptions.
Calculate the Drag Force at Max Velocity

My robot has 2 thrusters thrusting forward and 1 upward, it weighs 5.68 lbs, and we are testing them a chlorine pool.

I was trying to use F=ma to get the acceleration then use constant accel equations to get the other parts but I think there's too many unkowns.
 
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