Question

An airplane has a mass of 48,000 kg, a wing area

of 300 m2, a maximum lift coefficient of 3.2, and a cruising

drag coefficient of 0.03 at an altitude of 12,000 m. Determine(a)
the takeoff speed at sea level, assuming it is 20 percent

over the stall speed, and (b) the thrust that the engines
must

deliver for a cruising speed of 900 km/h.

Answer #1

Boeing 767-400ER model airplane has two engines. Each
engine can have a maximum thrust (mechanical force) output
of 270 kN. When the plane is cruising at 717.25 km/h, the pilot
decides to increase the speed to the typical 850.0 km/h. If drag on
the plane is on average 26188 N, and the engines are engaged at
55.42 % of their maximum thrust output, and the plane weighs 149375
kg, how long does it take to reach the new cruising speed?...

A small jet airplane has a total wing area of 67.5 m2
and a mass of 8.03 104 kg.
(a) If this jet is in horizontal flight, determine the pressure
difference between the lower and upper surfaces of the wings. in Pa
?
(b) When the speed of air traveling over the wing is 247 m/s,
determine the speed of air under the wing. Use 1.29
kg/m3 as the density of air. in m/s ?
(c) Which answer is correct...

An Airbus A320 has a total wing surface area of 122.6m^2 and a
drag coefficient of 0.0872. In cruise, the aircraft files at 840
km/s (233m/s) at an altitude of 10,000m where the air density is
0.4135 kg/m^3. If the max engine is 100 kN engine, what percentage
of that thrust is the pilot going to be using in cruise?
*A380 has 2 engines

A Boeing 747-8I aircraft has a mass of 447,700 kg. This includes loading. The combined area of both wings is 554 m2. The cruising speed is M0.855 (917 km / h). Determine the speed of the wind above the wing to maintain the aircraft's lift. The air density is 1.29 kg / m3

A: An airplane has an effective wing surface area of 18
m2 that is generating the lift force. In level flight
the air speed over the top of the wings is 61.5 m/s, while the air
speed beneath the wings is 58.5m/s. What is the weight of the
plane?
B: An antifreeze solution is made by mixing ethylene glycol
(ρ = 1112 kg/m3) with water. Suppose that the
specific gravity of such a solution is 1.1100. Assuming that the
total...

A cargo plane has two wings and each wing has an area of 34.15
m2. The mass of the cargo plane is 9310 kg. When the plane is
taking off, the speed of the air over the top of the wing v2 is 1.8
times air speed under the wing v1 (i.e. v2 = 1.8 v1). If v1 is the
same as the speed of the plane, what is the minimum speed of the
plane v1 to obtain enough lift...

Consider a CJ-1 having the following characteristics: wingspan =
53.3 ft, wing area = 318 ft2, normal gross weight = 19815 lb, fuel
capacity = 1119 gal of kerosene, specific fuel consumption = 0.6 lb
of fuel/(lb thrust hr), parasite drag coefficient CD,0 = 0.02, and
Oswald efficiency factor e = 0.81. The power plant comprises two
turbofan engines of 3,650 lb thrust each at sea level. Analytically
calculate the maximum rate of climb for the CJ-1 at 12000 ft....

A Boeing 747-8I aircraft has a mass of 447,700 kg. This includes
loading. The combined area of both wings is 554 m2. The cruise
speed is M0.855 (917km/h). Determine the speed of the wind above
the wing to maintain the aircraft's lift. The air density is 1.29
kg/m3.

Delta airlines case study
Global strategy. Describe the current global
strategy and provide evidence about how the firms resources
incompetencies support the given pressures regarding costs and
local responsiveness. Describe entry modes have they usually used,
and whether they are appropriate for the given strategy. Any key
issues in their global strategy?
casestudy:
Atlanta, June 17, 2014. Sea of Delta employees and their
families swarmed between food trucks, amusement park booths, and
entertainment venues that were scattered throughout what would...

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