Read about aerospace | 59 Discussions | Page 1

  1. E

    Question about variations of the Sun's path over long periods of time

    Hello. I am a filmmaker writing a screenplay and I am in need of technical support to validate a method being used in the film. I am going to post this in the Earth Science forum but I'll copy it here, in case anyone reading this might know. Thank you all! "I am wondering if shadows cast...
  2. Deepesh

    Mass and vibration frequency

    My query here is, Suppose there is a 2 kg mass To oscillate it/vibrate it, it will take some force and it will have some natural frequency Now I increase the mass to 5 kg so to vibrate it, won't it take more force and so at the end, won't the natural frequency of the object increase? as its more...
  3. sully21

    Courses What is it like to work as an Astrophysicist or an Aerospace Engineer?

    Hi all. I'm currently an aerospace engineering undergraduate student in my second year, but I'm going through a very confusing process of second guessings and would greatly appreciate advice from older people who work in the Aerospace or in the Physics/Astronomy fields to help me compare the...
  4. vchi

    Engineering Need to find L/D ratio for F117

    I was trying to look for an L/D ratio published everywhere on the web and I can't seem to find it for our project. Since I couldn't find it, I wanted to try calculating myself. Can't seem to find $$C_l$$ or $$C_d$$ though without some sort of paywall on research papers. So L/D would just be...
  5. chasemcd

    Schools Ryerson vs UofT Aerospace Engineering

    I see this question has been asked here before but that was 9 years ago and I’d like to get more up to do opinions. I’m trying to make my final decision and any input would be appreciated. I’ve been accepted into both UofT’s Engineering Science program and Ryerson’s Aerospace Engineering...
  6. M

    Calculating the cl_max of a wing from airfoil characteristics

    Hi, is there an appropriate method to get the maximum lift coefficient (cl_max) of a wing from the polars of the section airfoils? The background is that I cut a arbitrary wing into a certain number of sections. After that I use Xfoil to compute the local cl_max. Since this approach neglects...
  7. S

    I Multistage continuous Rocket Eqn

    So if you have a rocket lets say that discards all the structural and engine mass continuously at zero velocity that is relative to the rocket until only the payload is traveling at the final velocity - then what will the equation of motion will look like? we can neglect the drag and...
  8. S

    Programs (Space) Industry - Different Paths Towards It

    Hello! I am a returning student, 19YO, and will be starting back in community college in a month retaking classes I failed the first go-around with college. This is hopefully less of a "tell me what to do" thread, and more of a "clarify my misconceptions." Basically, I am very interested in a...
  9. Davidkippy

    Aerodynamics course order?

    I'm going to be an aerospace/mechanical engineering student at UAH next year and I am coming up with my four year plan. Two courses, "fundamentals of aerodynamics" and "compressible aerodynamics", are not prerequisites for each other, and they are both required. Based on your experience with...
  10. M Waseem Ashraf

    Calculating Aerodynamic properties of a wing on ANSYS (Fluent)

    Greetings I am currently working on a VTOL intelligent ambulance. I am stuck with calculating CoP and pitching moment calculations on ANSYS (Fluent).
  11. C

    Aerospace engineering career advice

    Hello About me: I am a transfer junior Aerospace engineering major at U of Minnesota and will be getting a degree in physics from U of Wisconsin the same time I graduate from MN (don't ask how that works, it just does). I have had an REU nuclear physics internship (+ a year and half of nuclear...
  12. M

    Job Skills Second Bachelors Degree

    Good Morning, I'm going to be graduating with a Bachelor of Science in Sound Recording Technology at the end of this fall semester. After spending the last 4-5 years working 'in the industry', i'm thinking that working bars on nights and weekends isn't really my speed. At 22, I'm still young...
  13. E

    B Warp jet?

    I was looking at videos on how a warp drive theoretically could work: by compressing space in front and expanding space in the back. This reminded me of a jet engine compressing air and blasting it out of a nozzle. My question is, could you build a sort of warp jet that would compress space...
  14. D

    Coupling two mechanical pieces for a telescope mount

    Hello PF community! Quick introduction: I'm a fresh-out-university mechanical engineer working on a telescope altitude-azimuth mount hobby project. The mount will be designed using rotary platforms (powered by internal motors) to move the mount structure in the altitude and azimuth directions...
  15. O

    Question about the turbine of a turbopump

    I found this illustration of a turbopump. I need to know if my intuitive sense is correct here. So, the turbine is located at the bottom right. The gas coming from the gas generator is fed into the torus shaped pipe on the left of the two turbine blades. First there is the HP turbine, the...
  16. O

    Weird aerospace question to probably be corrected

    This probably is as impossible as i think, but can an airplane have slanted wings? By this I mean, can an airplane's wings operate like a see-saw with one with angling upward, and the other going equally downward while the main body of the plane doesn't move at all. This mechanism would sort of...
  17. F

    Other Possible tracks during Masters Aerospace Engineering?

    I am having a bachelors degree in Mechanical Engineering and worked in consumer products production industry for some 4 years. I decided to go for Aerospace Engineering masters, a complete change of track from my work experience, primarily due to my passion for aviation. I wanted to ask what...
  18. E

    How to Calculate Drag Load of Sticker on Fast Moving Vehicle

    Hi Great Engineers, Need you help. I am required to calculate drag load on sticker to ensure it is not peeling off in operation. The vehicle may moves as fast as 220 km/hr with rectangular sticker size of 30 cm x 40 cm, thickness 0.0635 mm on its body. Wind direction is parallel to 40 cm length...
  19. Greg Bernhardt

    NASA Test Your NASA Knowledge - Comments

    TheAdmin submitted a new PF Insights post Test Your NASA Knowledge Continue reading the Original PF Insights Post.
  20. ramzerimar

    Aerospace transferable skills?

    I would like to know what are some transferable skills a mechanical engineer working in the aerospace industry for some years could bring to other engineering areas (like renewable energies, oil and gas, structures, manufacture...). Preferably, areas of expertise in the field of fluid...
  21. Alissa95

    Career that lets you travel lots/to remote locations?

    At the moment I am about to enter my final year of an MSci Physics with Particle Physics and Cosmolgy. My final year project will have me working on particle detector R&D (looking at designs and radiation hard technologies to upgrade LHCb's ECAL). The natural progression from that was to do a...
  22. Alissa95

    What to do after MSci Physics? Physics/aerospace/etc...?

    Please excuse any rambling, I’m going to try and make this as concise as possible. My background: I’m currently about to enter my 4th (final) year of an integrated masters in ‘Physics with Particle Physics and Cosmology’ – all that means is that all the particle and cosmology modules were...
  23. navierstokes

    Engineering Career Path: From MechE to Aerospace Engineering

    I know that aerospace engineering is a branch of mechanical engineering, and as a student of mechanical engineering myself, I'm curious to know what kind of knowledge a MechE coming out of a Bachelor's Degree should have if he wants to start working with aircraft (or pursuing a Master's Degree...
  24. lord sauron

    Importing Mechanical Apdl geometry in Ansys Workbench

    hi.. i want to import only the geometry defined in mechanical apdl into ansys workbench so that i want to have the freedom to change the geometry and meshing whenever i want to. thankyou
  25. A

    Post stall airfoil data

    Hello all, Where can I find post stall airfoil data? I'm writing a numerical methods program and need lift coefficient data for airfoils at very high angles of attack. Books or websites would be great. Thank you for any help
  26. A

    Vortex theory of propellers

    Hello all, I have been attempting to perform the iterative procedure outlined in McCormic's textbook (1995) for the vortex theory of propellers. However, I have become stumped when attempting to get tangential velocity relative to tip speed after the first iteration as a part of the equation is...
  27. navierstokes

    Courses Control for Aerospace Systems?

    Hi, MechE student here! I've become quite interested in control theory recently, and I've been studying it a lot. I thought about specializing myself in this field, but also, I want to work with aerospace. The problem is that control engineering looks like a EE field, and I fear that I wouldn't...
  28. Hoophy

    Low Atmosphere Rocket Launch Stages Carry Their Own Oxygen -- Why?

    So I was wondering how come liquid rocket engines (operating in the lower atmosphere (such as launch stages)) are using Oxygen that they have packed on board. What I mean to say is why would the rocket need to waste space and mass bringing Oxygen with them in the launch stage when they could...
  29. P

    I Vortex Lift

    For an airplane, their are multiple types of lift, camber, angle of attack, pressure difference, and vortex lift. I understand that at the end of wings the low pressure at the top, and high pressure on the bottom causes their to be a vortex formed. My question is, how exactly do they use that...
  30. M

    Engineering Why are aerospace engineers paid more than MechE's?

    Everyone says that the classes are basically the same, with different examples. So why are the aerospace engineers paid more by companies? And what are the differences in the job description of an aerospace engineer and a mechanical engineer both working in aerospace?