Rough surface of swift wings
Do you thing swift birds(most aerodynamics birds; 10months in the air without landing,fastest birds in horizontal flapping flight -169km/h) have some benefits of overlaping feathers which gives rough...
View ArticleA jet engine's shaft is neutral in the direction of thrust?
I think i read somewhere that jet engine shaft is neutral,because forces at turbine and compressor cancle out,so that mean axial berings dont have force on it in direction of thrust!? (this cant be...
View ArticleTianwen 1 Mission Live Streaming URLs
https://www.douyu.com/9019378 https://live.bilibili.com/22078631?from=search&seid=6442157386321698249 https://live.bilibili.com/22361339?from=search&seid=6442157386321698249...
View ArticleOrbital equations in polar coordinates
The equations of motion are: [itex]\ddot{r}-r{\dot{\theta}} ^{2} = -\frac{1}{r^{2}}[/itex] for the radial acceleration and [itex]r\ddot{\theta} + 2\dot{r}\dot{\theta}= 0[/itex] for the transverse...
View ArticleWhy don't airplanes explode due to pressure difference?
My question might sound trivial (I'm just a first year physics student anyways) , however I really feel the need to get an answer. Since the pressurized cabins inside an airplane are regulated at about...
View ArticleLife in domed cities
Lets suppose we could build domed cities on Mars. The surface of the planet has major temperature shifts. Would people inside the domes experience such things too, or no, since if the dome can provide...
View ArticleSpaceX Falcon Heavy Launch
All the Wild dang We're Going to Do in Space and Physics in 2018 (forum censors the original title) Featuring all the interplanetary probes and various missions and milestones closer to Earth, the...
View ArticleLift, Drag, Magnus, Bernoulli, Tennis ball fuzz, etc.
Hello, My background is not fluid mechanics. Yet, I am trying, very late in life (near retirement) to understand some things, now that I have time. I have always been confused about the qualitative...
View ArticleWall to wall airfoil in a wind tunnel
Does wall to wall airfoil produce downwash in wind tunnel ?
View ArticleHow to set the Magdeberg hemispheres in motion (propulsion)?
This is about the famous, classic experiment of Magdeburg hemispheres with the Wikipedia link below: https://en.wikipedia.org/wiki/Magdeburg_hemispheres. "The experiment was designed to demonstrate the...
View ArticleCelera 500L -- A much more efficient private aircraft
I saw this on CNN's website today: https://www.cnn.com/travel/article/celera-500l-plane/index.html The main claim is that the shape and overall design is more efficient than traditional aircraft...
View ArticleWhat type of letters are used in aero-engineering when hand writing?
Which type of letters is rule to use in aero-engineering when hand writing? All capitals-block letters, cursive, upper and lower case-block letters. .?
View ArticleDoes the title "Masters of Aerospace Engineering" exist?
Do title master of aerospace engineering exist or you can only be master of aeronautical or astronautical engineering?
View ArticlePotential Flow Theory: Circulation and the Kutta-Jukowski Theorem
Homework Statement:: What is the convention for ## \Gamma ## for the streamline ## \Psi = \frac{\Gamma}{2\pi} ln(\frac{r}{a} ) ## and how can we interpret the Kutta-Jukowski Theorem? Relevant...
View ArticleDrag on a Supersonic Baseball (from SmarterEveryDay)
In a recent video from SmarterEveryDay, a baseball is launched from an air cannon faster than the speed of sound. I used the video with my 2nd year HS physics class, and we put the high speed segment...
View Article2D vs 3D Method of Characteristics for Rocket Nozzle Design
Hi all, I'm working on programming a simple 2D method of characteristics program to design the nozzle wall contour for a supersonic rocket nozzle. I'm wondering roughly what sort of difference I should...
View ArticleQuaternions and Direction Cosine Matrix changing in time
I've already posted this question on the mathematics website of stack exchange, but I've received more help here in the past so will share it here as well. I am developing a tool for missile trajectory...
View ArticleIntroduction to Pitot-Static Systems in Gliders
Like many others, I have been seeking new and fun things to do during a pandemic. I decided on the new Microsoft Flight Simulator 2020, but the Condor 2 Soaring Simulator is my intermediate step. I...
View ArticleKerbal Space Program Tutorial Series - Open Access to 1.7
"How hard can rocket science be anyway?" Kerbal Space Program is a sandbox type computer game that leans heavily on concepts of physics (don't let that scare you though, you don't need a calculator nor...
View ArticleStudy about high frequency mosquito flight
Please see article here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5412966/?report=classic
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