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The Ave mar ferry, shown in Figure P10.9 (a), is a large 670-ton ferry hydrofoil built for Mediterranean ferry service. It is capable of 45 knots (52 mph) [29]. The boat's appearance, like its performance, derives from the innovative design of the narrow "wave piercing" hulls which move through the water like racing shells. Between the hulls is a third quasi hull which gives additional buoyancy in rough seas. Loaded with 900 passengers and crew, and a mix of cars, buses, and freight cars trucks, one of the boats can carry almost its own weight. The Ave mar is capable of operating in seas with waves up to 8 ft in amplitude at a speed of 40 knots as a result of an automatic stabilization control system. Stabilization is achieved by means of flaps on the main foils and the adjustment of the aft foil. The stabilization control system maintains a level flight through rough seas. Thus, a system that minimizes deviations from a constant lift force or, equivalently, that minimizes the pitch angle 8 has been designed. A block diagram of the lift control system is shown in Figure P10.9 (b).The desired response of the system to wave disturbance is a constant-level travel of the craft. Establish a set of reasonable specifications and design a compensator Gc(s) so that the performance of the system is suitable. Assume that the disturbance is due to waves with a frequency o) = 6 rad/s.
Assume that the profit from each sale is $750 for the situation in additional problem #1. What is the expected weekly profit for a salesperson?
the average age of doctors in a certain hospital is 45 years old . suppose the distribution of ages is normal and has a
A test was conducted to find out whether gender of a spokesperson affected the likelihood that consumers would prefer a new product. A survey of consumers at trade show employing a female spokesperson determined that 70 out of 150 customers prefe..
researchers at the university of california-berkeley have designed built and tested a switched-capacitor circuit for
What advisory group, composed of the commanders of the U.S. Army, Navy, Air Force and the Marines, counsels the President on military affairs?
Jill wants to do her MBA in Statistics at a B.C. university. She applies to two universities that offer post-graduate degrees in Statistics.
a high school math teacher gave her 30 students a math exam. in this exam the average scores for the high school
The probability of failure of a battery is described by the probability density function f(t) = kt2 for 0 ≤ t ≤ 120 hours. Determine the probability of the batteries failing within 60 hours
There are three nursing positions to be filled at Lilly Hospital. Position one is the day nursing supervisor; position two is the night nursing supervisor; and position three is the nursing coordinator position.
perform linear regression analysis to obtain an equation to predict age at death given a specific cholesterol level.
The New York Times recently reported that 60% of college entrants into elite public and private colleges in the U.S. have parents that earn over $150,000/yr.
steam enters an adiabatic nozzle at 4000 kpa 440 degrees celsius with a velocity of 75 ms. at the exit the pressure and
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