This is without any filtering due to the atmosphere is that correct?
If this is so then I need to find the atmospheric filtering as a function of altitude. Any ideas where I can find this?
We are using a thermal detector located at the focal point of the HDPE lens.
What I am trying to determine now is if HDPE is an appropriate material to use.
We are trying to filter most unwanted radiation out before focusing it to prevent overheating of the detector/electronic system which is...
Actually we will be pointing directly at the sun for the entire flight. Our max altitude will be about 90kft. Currently I am not trying to make an accurate approximation only an upper limit to find the temperature on the HDPE. How can I begin to calculate the radiation signature at some...
Howdy all,
I am developing a high altitude weather balloon project and I am thinking of using HDPE as a lens material for THz optics. I need to know the total heat transfer on the sheet of HDPE to see if it will reach critical temperatures. Since I am only looking for critical temperatures I...
That is extremely helpful thank you. What I am trying to do now is to calculate the ascent rate that my balloon will have. I calculated an approximate peak altitude already to be 26km, but what I would like to calculate by hand is how long it will take to get there. What is really important is...
Howdy,
I am looking to find the rate of ascent for a weather balloon filled with helium. My assumptions as of now are total payload weight=10lbs, total balloon weight=2lbs, total balloon volume(at launch)=150ft^3, balloon diameter(at launch)=6ft.
Also, how does the rate of ascent change with...
Hello all,
I have written a python code implementing the Runge-Kutta fourth order method for higher orders to approximate the motion of a double pendulum. The problem I am having is that my plot of theta2 (angle of second rod) Vs time looks a little off and I am curious if I have it correct...
I am a physics student new to the world of electronics and I have a question that may turn out to be very simple. What I am trying to design requires that a single output given some input be held in memory for a specified time despite any differing input being sent through during that time...
From what I understand you want to store energy in the form of rotational kinetic energy so that you may use it in addition to the counterweight to produce an overwhelmingly awesome trebuchet. For a rotating object the center of mass is also the rotating axis and therefore does not have any...
I am a little unclear on the question so if I fail to answer it please let me know. Are you simply trying to calculate the kinetic energy of a projectile? If so the center of mass is an unnecessary. It is true however that you can assume that the mass of an object is concentrated at the center...