**Predicting Drag on a Sonar Transducer Using Wind Tunnel Test Data****Objective:**This exercise involves predicting the drag on a sonar transducer based on data obtained from wind tunnel testing.**Experiment Details:**- **Prototype Specifications:** - Shape: Sphere - Diameter: 1 ft - Towing Speed: 5 knots (nautical miles per hour) - Environment: Seawater at 20°C- **Model Specifications:** - Diameter: 6 inches**Tasks:**1. **Determine Required Test Speed:** - Calculate the necessary test speed in air at 20°C for accurate drag prediction.2. **Estimate Prototype Drag:** - Given Data: Drag on the model under test conditions is 5.58 lbf. - Use the provided model drag data to estimate the drag on the full-scale prototype.

First we need to calculate the speed of airBy equating the Reynolds no → Re model = Re prototype →…

The drag on a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 1 ft diameter sphere, is to be towed at 5 knots (nautical miles per hour) in seawater at 20°C. The model is 6 in. in diameter. Determine the required test speed in air at 20°C.

The drag on a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 1 ft diameter sphere, is to be towed at 5 knots (nautical miles per hour) in seawater at 20°C. The model is 6 in. in diameter. Determine the required test speed in air at 20°C.

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

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Question

**Predicting Drag on a Sonar Transducer Using Wind Tunnel Test Data**

**Objective:**
This exercise involves predicting the drag on a sonar transducer based on data obtained from wind tunnel testing.

**Experiment Details:**

- **Prototype Specifications:**
- Shape: Sphere
- Diameter: 1 ft
- Towing Speed: 5 knots (nautical miles per hour)
- Environment: Seawater at 20°C

- **Model Specifications:**
- Diameter: 6 inches

**Tasks:**

1. **Determine Required Test Speed:**
- Calculate the necessary test speed in air at 20°C for accurate drag prediction.

2. **Estimate Prototype Drag:**
- Given Data: Drag on the model under test conditions is 5.58 lbf.
- Use the provided model drag data to estimate the drag on the full-scale prototype.

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