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shawon
Questions and answers by visitors named
shawon
Questions (90)
What was the main reason why propulsion formed a hurdle initially in the quest to be able to fly? Around the year 1900:
3 answers
134 views
An aircraft flies at an altitude of 32,000 ft. Determine its altitude in metres.
3 answers
58 views
If the ground beneath the aircraft is situated 6,000 ft above sea level, what is the height of the aircraft in feet?
7 answers
59 views
The course of an aircraft with respect to the true North is 120 degree, its course with respect to the magnetic North is 122
3 answers
35 views
The course of an aircraft with respect to the true North is 120, its course with respect to the magnetic North is 122. Determine
3 answers
47 views
Between 1903 and 1940, a significant change has taken place on the skin of aircraft wings and fuselages. What change is this?
3 answers
40 views
What will have been the design philosophy behind the vertical columns of the Millau bridge?
3 answers
43 views
Some aircraft are capable of flying upside down. Suppose that an aircraft cruises upside down, then what it its load factor?
7 answers
50 views
An aircraft component has an ultimate load of 5.28 kN and a limit load of 1.32 kN. What is its safety factor?
4 answers
46 views
An aircraft component has an ultimate load of 5.28 kN and a limit load of 1.32 kN. What is its safety factor?
Based on this
5 answers
58 views
A modern jet flies at an altitude of 6,200 metres, during its climb to cruise altitude. For additional passenger comfort, the
3 answers
66 views
A young engineer has come up with a 'brilliant idea': an aircraft with a square fuselage for more space. Since all aircraft have
5 answers
57 views
What will your main argument of why a square fuselage is not a good idea be?
3 answers
40 views
A futuristic Aircraft manufacturer has come up with the idea to build a supersonic passenger jet, which is supposed to perform
3 answers
57 views
A futuristic Aircraft manufacturer has come up with the idea to build a supersonic passenger jet, which is supposed to perform
7 answers
90 views
An Airbus A380 is flying in steady, horizontal flight at Flight Level 280.
The pilot reads an Indicated Airspeed (IAS) of 290.0
3 answers
106 views
Early aircraft used wing warping to bank, modern aircraft use ailerons. Why don't modern aircraft use wing warping?
5 answers
51 views
Modern aircraft usually have two sets of ailerons: one 'inboard aileron' (close to the fuselage) and one 'outboard aileron'
5 answers
78 views
Suppose the pilot of a conventional aircraft decides to increase the thrust of this aircraft, but wants to keep the pitch angle
7 answers
111 views
how we understand that yaw angle will be positive or negative the aircraft get?
3 answers
65 views
As an aircraft flies across the globe, it must continuously pitch (with respect to an inertial frame of reference) to keep
5 answers
60 views
Below you see a picture of a mass m attached to a spring.
By what kind of stability is this system characterised?
5 answers
37 views
Consider a statically stable aircraft in the yaw direction. What direction will the aircraft straight away yaw to after the
7 answers
65 views
In a car, you basically have two controls in the forward direction: the throttle and the brake pedal. Consider this type of
3 answers
49 views
Longitudinal static stability means that an aircraft
3 answers
58 views
Below you see a figure of a flying wing, so an aircraft without a tail. Its centre of gravity is situated behind the aerodynamic
3 answers
57 views
For this aircraft, you are given the following parameters:
Furthermore we will assume that the downwash angle is equal to 10% of
3 answers
48 views
For this aircraft, you are given the following parameters:
l(wing)=34.9m, l(tail)-67.8m, S=437 m^2, S_H=93 m^2, C_=8.25m,
3 answers
54 views
For this aircraft, you are given the following parameters: l(wing)=34.9m, l(tail)-67.8m, S=437 m^2, S_H=93 m^2, C_=8.25m,
3 answers
69 views
what is l_h meaning aerospace engineering
3 answers
44 views
In the picture below you see a King Air 200, an aircraft with a so-called T-tail. One of the primary reasons of placing the tail
3 answers
66 views
In the picture below you see a King Air 200, an aircraft with a so-called T-tail. One of the primary reasons of placing the tail
3 answers
63 views
What is/are the properties of the Dutch roll regarding aircraft ?
3 answers
34 views
What is/are the properties of the Dutch roll regarding aircraft. it is statically stable or dynamically stable or unstable or
3 answers
60 views
A propeller engine for a model airplane is measured to have a jet velocity of 50 kilometres per hour. When strapped to a fixed
3 answers
102 views
A general aviation aircraft (m = 1200 kg) flies (under ISA conditions) at 850 metres altitude, with a constant velocity (true
3 answers
56 views
Which of the following is/are not (an) option(s) to let a combustion engine deliver more net work? (Multiple correct answers
3 answers
40 views
Which of the following is/are not (an) option(s) to let a combustion engine deliver more net work? (Multiple correct an 1.Expand
3 answers
68 views
Again consider the combustion cycle shown in the previous problem. What is the net work done (in Joule) by this cylinder during
3 answers
55 views
The tip of a 2.5m diameter propeller turns with a Mach number of M = 0.8 at sea level, under ISA conditions. Determine the
3 answers
53 views
The tip of a 2.5m diameter propeller turns with a Mach number of M = 0.8 at sea level, under ISA conditions. Determine the
3 answers
64 views
From the manufacturer the following data can be obtained:
Engine Power = 1200 hp Propeller Diameter=2.67m Propeller RPM=1700
3 answers
105 views
A twin-engined propeller aircraft is equipped with two engines, each rated at 98 kW shaft power. During cruise flight at 72 m/s
3 answers
68 views
A twin-engined propeller aircraft is equipped with two engines, each rated at 98 kW shaft power. During cruise flight at 72 m/s
3 answers
58 views
Why are modern jet engines so big?
To increase their jet efficiency To increase the ratio air/fuel To make them more powerful To
3 answers
49 views
What is a typical value for the bypass ratio of the most modern engines?
3 answers
45 views
In an earlier problem we considered the GE90 engine, one of the world's most powerful engines.
It was already determined that the
3 answers
66 views
It was already determined that the jet velocity of this engine is 376 metres per second. Suppose that this Boeing 777 flies at
3 answers
76 views
It was already determined that the jet velocity of this engine is 376 metres per second. Suppose that this Boeing 777 flies at
3 answers
63 views
It was already determined that the jet velocity of this engine is 376 metres per second. Suppose that this Boeing 777 flies at
3 answers
51 views
In the previous clips the ETOPS rules were shortly discussed, which prohibit aircraft with only two engines from making certain
3 answers
65 views
In the previous clips the ETOPS rules were shortly discussed, which prohibit aircraft with only two engines from making certain
3 answers
80 views
There has been an X-plane intended to investigate steering by thrust vectoring. Which number did it have?
The X-21, The X-27, The
3 answers
46 views
On a RADAR screen an operator spots some kind of aircraft, flying 1200 feet per second at an altitude of 14 kilometres. What
3 answers
60 views
At some point on its trip a Concorde aircraft flies 520 m/s at an altitude where the temperature is -56 degree C. Determine the
3 answers
70 views
What is/are the main and unique challenges for materials to be used in space? The materials need to withstand radiation, The
3 answers
95 views
Suppose an airliner is planning to fly an Airbus A319 very low over a water surface, thereby increasing its lift coefficient by
3 answers
80 views
What function(s) were the Russian ground effect planes meant to carry out:
Be invisible to radar and sonar, Transport military
3 answers
48 views
User
Why are the engines of all Russian sea planes so high up? To ensure stability whilst flying so low over water, To prevent
3 answers
49 views
Why are helicopters so hard to fly? Which is right :
There are more controls than in an aircraft, Helicopters are inherently
3 answers
49 views
What do we call the manoeuvre which is to be performed after a helicopter engine failure?
3 answers
52 views
What is/are the functions of the swashplate? which is/are right below:
It acts as a transmission between the shaft and the
3 answers
50 views
The main rotor of a helicopter produces a torque of 4.8 kNm. If the tail rotor is capable of producing 720 Newtons of thrust,
3 answers
55 views
What type(s) of stability does a hovering Harrier jet (shown below) possess? Which is/are right: Positive static stability,
3 answers
54 views
What type(s) of stability does a hovering Harrier jet
possess? Which is/are right: Positive static stability, Neutral static
3 answers
48 views
The value of cybersecurity :
What cybersecurity problems are you solving? How are you protecting your organization? How are you
1 answer
96 views
The Wright Brothers are remembered for their first flight. They were first with:
A controlled flight with a heavier than air
1 answer
50 views
You are given four statements about the NACA airfoil with code “XYZZ”:
The X stands for the camber as percentage of the wing
1 answer
48 views
You are given four statements about the NACA airfoil with code “XYZZ”:
The X stands for the camber as percentage of the wing
1 answer
47 views
What is a lift-drag polar? The curve showing the lift coefficient as function of the drag coefficient. The curve that indicates
1 answer
72 views
Which one of the following statements about “beams” is false?
Most structural elements of a wing, like spars, ribs and
1 answer
53 views
Which one of the following statements about “composites” is true? Typical examples of composites are Fibre Reinforced
1 answer
80 views
Which one of the following statements about “composites” is true? Typical examples of composites are Fibre Reinforced
1 answer
52 views
For an anisotropic material the material properties depend on the
1 answer
41 views
What measure(s) can be taken to reduce the drag at transonic and supersonic air speeds? Reduce the tip chord of the wing,
1 answer
68 views
What measure(s) can be taken to reduce the drag at transonic and supersonic air speeds? Reduce the tip chord of the wing,
1 answer
69 views
An aircraft with a wing area of 29 m flies with a velocity of 300 km/h, at an altitude where the air density is 0.92 kg/m^3. Its
1 answer
72 views
An aircraft with a wing area of 29 m flies with a velocity of 300 km/h, at an altitude where the air density is 0.92 kg/m^3. Its
1 answer
51 views
The production process for metals in their liquid state" is called:
1 answer
25 views
"The assembly of multiple components" is called:
1 answer
39 views
Positioning yarns or rovings around a cylindrical mandrel" is called
1 answer
37 views
When we compare three different materials (a steel alloy, an aluminium alloy and a composite material), what is the worst option
1 answer
50 views
When we compare three different materials (a steel alloy, an aluminium alloy and a composite material), what is the worst option
1 answer
57 views
Number of engines: 2
Wing surface: s=88.3 m^2 Diameter of engine inlet: d=1.1180 m Oswald efficiency: e=0.67 Span: b= 23.7m Mass:
1 answer
46 views
E)In reality a slightly larger tail surface area is chosen than the one computed in the previous ques-tion. What is/are the
1 answer
42 views
The airplane is being controlled by autopilot. The pilot would like to change the heading setting of the autopilot of A280.
1 answer
47 views
The airplane is being controlled by autopilot. The pilot would like to change the heading setting of the autopilot of A380.
1 answer
43 views
For the Airbus A380, the largest passenger aircraft ever built, you are given the following parameters:
Variable Value Mass
1 answer
42 views
For the Airbus A380, the largest passenger aircraft ever built, you are given the following parameters:
Variable Value Mass
1 answer
52 views
Variable Value
Mass 500,000 kg Wing Area 845 m2 Wingspan 79.75 m Number of Engines 4 CLmax flaps retracted 1.9 CLmax flaps
1 answer
67 views
