Recent content by DanRow93

I have put these as my answers (online homework), and my three values for range are wrong. Values for payload (1400, 200, 0) are correct. The only thing that I can spot that might be the reason is that we are given CL(max) in the known variables. Perhaps I am supposed to use it in the range...

Homework Statement Assume that m(fuel, climb) = 1300kg is the mass of fuel required for the climb to the cruising altitude of 10,000m, independently of the take-off weight. Assume that the distance covered during the climb is always 100km. Consider the typical payload-range diagram shown and...

I actually don't know, I've confused myself. At point B the axial force along BC is downwards, so axial force in X is opposite which means it should be tension doesn't it? I put the answer 5.08 into the online test that I had to do and I got it wrong...

Which right hand part do you mean I could have isolated, from point X to C? It would be compression I think, so should be -5.08?

Homework Statement I have to find axial force at X for the following structure: https://i.imgur.com/8o01fkC.jpg The Attempt at a Solution These are my workings https://imgur.com/JfSfk9Z https://imgur.com/3HuDN4d I didn't work out moments because the question only asks for axial force, is...

Homework Statement A Chinook helicopter’s rotor blades and hub have a top speed of 300 revs/min and a combined mass of 300 kg. On a maintenance test the blade assembly is allowed to stop without applying the brake, in this condition the blades take 48 seconds to come to a standstill. The...

Homework Statement http://imgur.com/qBXvrGz Above is a sketch of the circuit, a two stage symmetrical attenuator consisting of two symmetrical T attenuator pads connected in cascade, with the values that I have worked out for the resistors. The reduction is 15dB in the first stage, and 8dB in...

Great, thanks!

So to clarify, it makes sense that the current flows in the opposite direction around the circuit when the supply voltage is switched off and the capacitor is discharging, when compared to the current direction when the supply voltage is switched on?

I wasn't quite sure about q_0 = VC ; if I should use 120v or 0v as the voltage supply has been switched off.

Homework Statement A step voltage of 120v is applied to a series CR circuit. C = (4x10^(-6))F R = (20x10^(3))Ω When the capacitor is fully charged the supply voltage is removed. Using KVL and Laplace transforms obtain an equation for the transient circuit current, given when t = 0, the voltage...

Homework Statement A step voltage of 120v is applied to a series CR circuit. R = 20KΩ, C = 4µF 1. Deduce, using Kirchoff's voltage law and Laplace Transforms, an expression for the transient circuit current. 2. Using the equation obtained in 1. deduce the equations for the transient voltages...

g(x)= √(19x) = upper curve f(x)= 0.2x^2 = lower curve Firstly, I found the point of intersection, which would later give the upper values for x and y. x=7.802 y=12.174 Then I found the area under g(x) and took away the area under f(x) to get the area between the curves. 31.67 units^2 This is...

Ok thank you! I guess I was looking into it too much.

I do understand the equation, so: x = (arctan(21/22) + 1π)/3 I'm just stuck with how to know what n equals. I know this is dumb because it's probably the simplest part of the whole task, thanks for being patient.