Problem 2: Consider the Boeing 747 jet transport, whose layout is shown in Fig. 2 and has the following characteristics: xoa 0.25, 8 5500/2, b 195.68ft, 27.31ft, AR, 3.57, V = 0.887 Determine the wing and tail contributions to the CM-a curve. You may want to assume CM, reasonable assumptions (e.g., -0.09, 0, -4°. i=0.0°, and i = -2.0°. Make any other 0.9).

Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.Very very grateful! Please do not copy other's work,i will be very very grateful!!

Cornering force and drag force on tires. Consider a tire that has lateral force behavior like the one in the following figure. Assuming that the drift angle is 4 degrees and the normal force F = 5000N, calculate the cornering and drag forces on the tire.

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8. A spherical balloon is 40 ft in diameter and surrounded by air at 60°F and 29.92 in Hg abs. (a) If the balloon is filled with hydrogen at a temperature of 70°F and atmospheric pressure, what total load can it lift? (b) If it contains helium instead of hydrogen, other conditions remaining the same, what load can it lift? (c) Helium is nearly twice as heavy as hydrogen. Does it have half the lifting force? R for hydrogen is 766.54 and for helium is 386.04 ft.lb/lb.°R. Ans. (a) 2381 lb; (b) 2209 lb

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This is a practice hw question not graded!!

(5) A pickup truck has a five liter, V6, SI engine operating at 2400 r.p.m. the compression ratio rc = 10.2:1, the volumetric efficiency y = 0.91, and the bore and stroke related as stroke S = 0.92 B. calculate :- (a) stroke length. (cm) (b) Average piston speed. m sec (c) Clearance volume of one cylinder. kg (d) Air flow rate into engine. sec (cm³)

OO O0I 94) 8:50 EXAMPLE Given: A sports car has a mass of 2 Mg and an engine efficiency of ɛ = 0.65. Moving forward, the wind creates a drag resistance on the car of F, = 1.2v2 N, where v is the velocity in m/s. The car accelerates at 5 m/s?, starting from rest. Find: The engine's input power when t = 4 s. Plan: 1) Draw a free body diagram of the car. 2) Apply the equation of motion and kinematic equations to find the car's velocity at t = 4 s. 3) Determine the power required for this motion. 4) Use the engine's efficiency to determine input power. nashat N •..

(b) A wind-tunnel experiment is performed on a small 1:5 linear-scale model of a car, in order to assess the drag force F on a new full-size car design. A dimensionless "drag coefficient" Ca is defined by C, =- pu'A where A is the maximum cross-sectional area of the car in the flow. With the model car, a force of 3 N was recorded at a flow velocity u of 6 m s. Assuming that flow conditions are comparable (i.e., at the same Reynolds number), calculate the expected drag force for the full-sized car when the flow velocity past it is 31 m s (equivalent to 70 miles per hour). [The density of air p= 1.2 kg m.]