a=2 b=1 A bullet is to be tested in the laboratory to determine the drag force...

a=2 b=1

A bullet is to be tested in the laboratory to determine the drag force on it. Dependent parameter the drag force D (Newton) depends on the velocity of the bullet V(m/s), the length of the bullet L(m), sound velocity c(m/s), density of fluid ρ (kg/m³) and dynamic viscosity µ(kg/ms).

Solve the problem by making the necessary assumptions and drawing the schematic figure

I-Determine the nondimensional p parameters using repeating variables

ii-a bullet with a speed of 9a,b m/s in air may be modelled in a water tunnel with a test section velocity of 2ab cm/s. Determine the length of the model, if the length of the bullet is 5a,b mm. The air and water temperature is 20 ^oC degree at 1 atm.

iii- if the drag force on the model is measured to be 2,ab N, then determine the expected drag force on the bullet. Comment on dynamic similarity equivalence?

Expert Solution

samet mamat answered 1 year ago

Can you write essay with 300-450 words related to these keywords? 1-Drag force 2- Lift force...

Can you write essay with 300-450 words related to these keywords? 1-Drag force 2- Lift force 3- Omnidirectional 4- Pitch control 5- Stall control 6- Yaw motor

A 6.2-mm-diameter electrical transmission line is exposed to windy air. Determine the drag force exerted on...

A 6.2-mm-diameter electrical transmission line is exposed to windy air. Determine the drag force exerted on a 165-m-long section of the wire during a windy day when the air is at 1 atm and 15°C and the wind is blowing across the transmission line at 65 km/h. The density and kinematic viscosity of air at 1 atm and 15°C are ρ = 1.225 kg/m3 and ν = 1.470×10-5 m2/s. _____ N

When a parachute opens, the air exerts a large drag force on it. This upward force...

When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 852 N and the drag force has a magnitude of 1018 N. The mass of the sky diver is 86.9 kg. Take upward to be the positive direction. What is his acceleration, including sign?

1. What hypothesis is being tested to determine statistical significance of a coefficient? 2. Draw a...

1. What hypothesis is being tested to determine statistical significance of a coefficient? 2. Draw a t-distribution. Identify p-value on the graph for H0: B>=0 and Ha: B<0 hypothesis and t-statistics=0. Identify α=5% on the graph. 3. Draw a t-distribution. Identify p-value on the graph for H0: B<=0 and Ha: B>0 hypothesis and t-statistics=0. Identify α=5% on the graph. 4. Draw a t-distribution. Identify p-value on the graph for two-tail hypothesis and t-statistics=1.645. Identify α=5% on the graph.

Post-Laboratory Questions 1. Determine the % yield of aspirin. 2. Compare the melting point of the...

Post-Laboratory Questions 1. Determine the % yield of aspirin. 2. Compare the melting point of the crude and the recrystallized aspirin with the theoretical melting point. a) Determine the % error b) Did the recrystallization process achieve any purification effect? c) Should the melting point of the recrystallized aspirin be higher or lower than that of the crude aspirin? 3. Discuss the FeCb test for impure and recrystallized aspirin. 4. 2.52 g of salicylic acids are reacted with 9.87 g...

.A student engineer is given a summer job to find the drag force on a new...

.A student engineer is given a summer job to find the drag force on a new unmaned aerial vehicle that travels at a cruising speed of 320 km/h in air at 15oC. The student decided to build a 1/50 scale model and test it in a water tunnel at the same temperature. (a) What conditions are required to ensure the similarity of scale model and prototype. (b) Find the water speed required to model the prototype. (c) If the drag...

If a golf ball were dropped from a significant height and the force of Drag is...

If a golf ball were dropped from a significant height and the force of Drag is modeled by Fd=0.0057*V-0.0106, where V is the velocity in m/s the Fd is the force of drag in N. The mass of the golf ball is 0.0455 Kg. h. How high will the golf ball bounce after the 5th impact with the concrete surface ignore drag force? i. If drag was included for G and H what type of analysis technique would be needed

2 There are two (2) laboratory tests can be conducted to determine the coefficient of soil...

2 There are two (2) laboratory tests can be conducted to determine the coefficient of soil permeability which is falling head test(for fine grained soil) and constant head test(for coarse grained soil). Based on your understanding about soil permeability, justify the difference of these two tests in details by using your own word. Provide the justification with references and the answers are limited to three pages only.

Laboratory activity 1) 3 testubes A , B and C with 4ml of starch solution 2)...

Laboratory activity 1) 3 testubes A , B and C with 4ml of starch solution 2) 3, A-1, A-2 and A-3 testubes with alfa amylase: testube A-1 is placed in a cold bath, and B-1 in a 37C water bath and C-1 in a boiling bath for 5 min 3) Transfer contents of tube A into ice bath and pour contents of A-1 to tube A, Mix and place tube A back in ice bath. After 10 min add 2...

4- If the drag force on a smooth sphere depends on the velocity (V), sphere diameter...

4- If the drag force on a smooth sphere depends on the velocity (V), sphere diameter (D), viscosity (?), and density (?), use dimensional analysis to show the drag coefficient on the sphere is a function of the Reynolds number only. (15%) ?

Question