Aircraft Definition and 337 Threads

hey guys i just want to know if an aeronautical engineer fault in designing or in building the aircraft could cause an aircraft accident?

Hi, I hope someone can help me with this question, I originally posted this question in the homework help forumbut no one seems to be able to help me with it. I think my problem is more math related - I don't really know where to start. I have been a given a matrix containing aircraft...

Hi For an initial approximate, I am modelling an aicraft wing as a cantilevered beam. I want to model the beam to incorporate the different materials used; a composite plate is sandwiched between a foam material and therefore the stiffnesses are different. How can I take this into account or...

Hello All, My first post here - I wonder if anyone can help? I am attempting to apply fracture mechanics to an investigation of an aircraft structural component, and am having difficulty finding a suitable method of adequately calculating the total applied stress (hence 'landing...

Hi, I am trying to work out the ground run distance of takeoff for an aircraft. I can't really write the formula down because of the length and many variations of it so I am just hoping that you know what I am talking about. I am trying to work it out for a cessna 172 so i am expecting a...

I'm trying to figure out the average deceleration of an aircraft that touches the ground at 104 knots (175.53 ft/sec) and decelerates to zero in 3200 feet? Does anyone know how to do this? Thank you very much to all who reply.

Hi, I need to make changes to an existing design of a model radio controlled aircraft to increase its lift to carry more payload. Pls confirm my ideas and any suggesstions would be really appreciated. Using wingtips to reduce induced drag and increase lift. Will a Dihedral affect lift in...

Though I'd scan for ease ;) Homework Statement Check the Pendulum question out http://dl.getdropbox.com/u/37461/physhelp/secC1.png and http://dl.getdropbox.com/u/37461/physhelp/secC2.png,and the http://dl.getdropbox.com/u/37461/physhelp/secB1.png.Homework Equations Should all be in the...

I'm trying to solve a problem which involves the following scenario. Any help would be great! A landing aircraft (mass 14 tonnes) is to be slowed from 300km/hr to 180km/hr in 3 seconds, by the deployment of two identical parachutes at its rear. Determine the diameter of each parachute. The...

momentum transfer? when aircraft is in motion, it has momentum. Since it has momentum, there is momentum transfer taking place between the aircraft and the air particles. During this momentum transfer what exactly is happening between the wings and fluid particles that are present right...

Homework Statement As an aircraft approaches landing, the components of its position are given by: x=81t y=500-27t Velocity vector of aircraft during descent is given by: 81m/s (i hat) + -27m/s (j hat) The value of the speed during the descent is: 85.381m/s What angle does the velocity...

Homework Statement An Airbus A320 jetliner has a takeoff mass of 75,000 kg. It reaches its takeoff speed of 82 m/s in 35s. Find the Thrust of the engines, don't worry about air resistance, but rolling friction is substantial. Homework Equations Fnet=mass*acceleration a=(82/35)...

Heard on the radio that the aircraft that crash landed at London airport crashed because of ice in the fuel (or that is the best guess) surly this is a cop out.

An aircraft flying in a straight line at constant height h and speed U drops a package on a target at ground level. The package is subject to air resistance whose magnitude is kmv where v is the speed of the falling package, m its mass, and k > 0 a constant. (a) Show that the vertical...

Homework Statement 4) The wing of an aircraft is 60m long and the aircraft is traveling at 250ms-1. The vertical component of the Earth’s magnetic field, which the wing is cutting, has the value of 4.3 X 10-5 T. Calculate: a. The Flux cut per second by the wing b. The induced emf set up...

Homework Statement A jet aircrft climbs in a straight line at an atitude of 60 degrees to the horizontal the jet thrust amounts to 90 kn the mass of the aircraft is 8 tonne and the average air resistance amounts to 11kN calculate the time taken to reach a height of 3km if the speed at the...

This is what I understand about Kelvin's Circulation Theorem 1)for inviscid (where the viscous forces are much LESS than inertial forces) AND uniform density flow, the circulation is conserved. 2)This implies (by some arduos vector calculus manipulations) that the vorticity of each fluid...

heres the problem i was working on http://i14.photobucket.com/albums/a322/guitaristx/plane.jpg heres my work http://i14.photobucket.com/albums/a322/guitaristx/planework.jpg do my FBD's look ok?...and I am trying to figure the velocity of B first, does my a-sub-n look ok?...and to...

I've been trying to conceptualise accurately the lift forces upon an aircraft in physics terms, for a simulator flight manual I've been working on. What I've got from some rudimentary flight training is that low pressure above the wing rather than high pressure below it causes lift, obviously...

For some time I've been thinking of making a round disk shaped model aircraft that would appear to have low drag, maximum internal carrying space, and maximum load carrying ability. As you can guess, there is little available on such a design, other than the Pancake, built at the end of WWII...

Hopefully I have posted this in the correct section; Can anyone help with the equation(s) & assumptions required to specifically calculate the landing G load of a modern jet aircraft. I'm trying to calculate the G deceleration rate of an aircraft on landing based on the initial vertical...

Homework Statement The pilot of an aircraft wishes to fly due west in a 50.0 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 205 km/h. a.In what direction should the aircraft head? b. What should its speed be relative to the ground? Homework...

I am working on modeling a power system on an aircraft right now, the problem is that I have loads that are constant power drawing no matter the voltage. They will draw 5kilowatts no matter 28 volts or 22 volts. My problem is modeling them. I can model them at one particular voltage but I want a...

To go off on a tangent - I am watching a discovery channel program about the F22 fighter. A pilot (who looks about 15) is describing how the aircraft's engine is unique because it can vector thrust for manouverability and can fly supersonic without afterburner. I suppose that's true now that...

This is a differential equations problem that I've been having some trouble with. A plane is flying and always pointing towards point (0,0) on an xy plane. Wind is constantly blowing North (positive y direction). The wind speed and speed of the aircraft through the air are constant. (a)...

hey Was wondering. http://en.wikipedia.org/wiki/Aircraft_carrier 1) Does USA really have 12 4.5 billion USD Carriers ? or are some from the cold war ? Are Cold war carriers of any use ? (like to carry helicopters) ? 2) Does france really have only 1 aircraft carrier now ? That seems small...

Homework Statement The Attempt at a Solution Vch = Vce + Vhe Do I have this correct? I am guessing I need to find the velocity of the carrier with the respect to earth, and also find the velocity of the helicopter with respect to earth. Than with these two answers I can find...

Anyone know how long a typical let's say news helicopter can last in the air given how much fuel it holds? I am not sure but I heard a news helicopter or a police helicopter probably won't last more than 3 hours in the air. Some military transport helicopters can only do about 2 and attack...

A friend of mine who has a lot of experience with aircraft tells me the following:- His premise seems to be that something changes when your feet are off the floor. I think what he is saying is incorrect and that the distance jumped will be the same in either direction as the whole...

How do you figure out how fast an aircraft can travel, in Km/H ,if given the weight and the thrust. For example: the aircraft weighs 3,100 lbs and has 20,000lbs of thrust i thought it was 20,000/3,100= 6.5m/s/s which would be 23km/h ? but a 747 weighs around 850,00 lbs and has...

I selected two motion problems: 1) Aircraft landing 2) Ball falling onto the gound Using conservation of mechnical energy principles I need to fully expain and justify my reasons why its more suitable than applying Newton's laws of motion. I have already said a) Newton laws of...

Pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee I have to present a paper on Aircraft materials and I have only one month left to prepare... I've split my paper into 3 parts and for the third aspect,I need to know the material details of Jumbo Jets like 787...

wat will be the longitudinal static stability of an aircraft with a larger wing to a smaller wing?

I was reading about some recent announcements by Aeros and their competitor SkyCat, both of whom are seeking to marke large hybrid airships as a means of transporting very heavy payloads through the air. I'd like to ask, what would be the best engineering solution to safely transport the...

I have been working on a problem trying to solve the turn diameter of an aircraft in a steady state level turn. I have been using the standard equations for turn radius and rate of turn. The formulas I am using are: 1) Turn Radius = (Velocity*Velocity)/(11.26 *Tan (bank Angle)) , velocity...

My dear physics peeps, brothers, sisters, friends... PLEASE SAVE MY SOUL...... My professor asked me to do a mini research on aircraft production techniques, and submit a 200 page report... Through out the last week, I banged my head hard over the internet, and found not a single page on...

Figure shows the cross section of a single cell, thin walled beam with the horizontal axis of symmetry. The direct stresses are carried by the booms B1 to B4, while the walls are effective only in carrying shear stresses. Assuming that the basic theory of bending is applicable, calculate the...

Can an aircraft fly with just one wing? it sounds impossible but this film shows otherwise. And the pilot pulled out of a spin, the use of afterburner seems to have given the aircraft the extra speed to stabilise flight. Still very odd, i can not see how aerodynamically this aircraft flew.

does anyone know the solution of problem 9.17 of the book Aircraft structures for engineering students or help me with how to approach to solve the problem. regards,

hi all, I am new to the forum as you've probably guessed. this is probably the last thread i'll ever start, and I am probably about to make a tit of myself cause i don't really know anything about physics but.. im starting to wonder why nothing seems to be available to buy, that will simply...

Do you guys know of any books with research on aircraft wings? I would like a book which contains comparisons between many types of wings, with their advantages/disadvantages weighed out against one another.

Those in Aerospace Engineering might find this report useful in terms of walking through some of the design aspects of an aircraft. http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890009038_1989009038.pdf

1989 (eighteen years ago) an aircraft droped down its fan disk. And After that it has difficulties for landing and crashed on the gruond and more than 100 people killed. The disk was not found several months. Indeed by simple physics rules it is very easy to find the location of this disk...

Homework Statement Submarine is traveling at 12 m/s toward an aircraft carrier emits a 2400 Hz sonar pulse. The reflected pulse returns with a frequency 2310 Hz. What is the speed of the aircraft carrier? (Positive/negative means the carrier is moving toward/away from the submarine.) The...

Hi I'm very new so I'm not sure if this is the best place to put this in. I've got a problem that I'm having trouble working out and any help would be great. 'A retracting nose wheel assembly is raised by the application of a torque T applied to link BC through a shaft at B. The wheel and arm...

I am new here and i am so glad to be member here i am new graduates from aeronautical academy and hope to get work in any airline in the world (need fresh graduation) but most of the airlines need experience over 5 Y :smile: pray for me to get work and i am looking for free book on the...

A man flies a small light aircraft straight and level. Inside the cockpit is a fly flying. Does the fly’s weight contribute to the aircraft’s weight at all?

In an edition of the New Scientist it says: "The streams of water vapour and ice particles that form behind an aircraft, called contrails, are known to create cirrus clouds. These clouds can trap heat radiating from the Earth's surface and thus add to global warming" How big an addition to...

If part of the upper surface of a jet aircraft wing was replaced by a thin flat plastic sheet containing inert helium gas moving at 2-300 miles an hour (relative to the aircraft),in the direction of motion of the aircraft,the force on the upper wing surface would be reduced significantly and...

An aircraft flying at an altitude of 10 km finds that the sun is stationary in the sky. Calculate the speed of aircraft.