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Aeronautical Engineering/Questions Answered by Expert Mark Janus
| Subject | Date Asked |
| Autogiro concept | 4/24/2012 |
| Q: Mark You must be familiar with the autogiro concept. What do you think of the idea of using an auto ... A: I think autogiros are quite ingenious designs... that said, to your point, Eurocopter and others ... | |
| Information regaring Spiroid Winglets | 3/15/2012 |
| Q: Good Morning, I've mailed you earlier about CFD and the answer I've received was very helpful. I had ... A: I'm not sure of what you mean when you say "how the flow over the Spiroid Winglet is generated". The ... | |
| Careers in CFD/Aerodynamics for Non-US citizens | 3/11/2012 |
| Q: I am interested to pursue a Masters/PhD in Aerospace with CFD/Aerodynamics as specialization. I have ... A: You shouldn't have any difficulties finding a job in the CFD area... no I wouldn't switch to ... | |
| Information regaring Spiroid Winglets | 3/8/2012 |
| Q: Good Morning, I am in Emirates Aviation College, Dubai, UAE doing my Bachelor of Science in ... A: Sorry for the delay, I was out of town and had no internet connection... This is kind of a broad ... | |
| Aerospace engineering jobs prospects in the States | 12/30/2011 |
| Q: Sir, I am a Malaysian citizen interested in furthering my studies in the field of aerospace ... A: You are correct that large companies have many military contracts that require US citizen labor, but ... | |
| Down wash in psi or hPa | 11/9/2011 |
| Q: I was curious... I was reading about VTOL aircraft in particular the LTV XC -142 and one design ... A: I'm not sure of what is meant by 10psi when landing unless they mean stagnation pressure on the ... | |
| Flat plate at zero incidence | 9/29/2011 |
| Q: Sir, Form drag is because of the change in effective shape of the body due to Boundary layer growth ... A: Form drag is also referred to as pressure drag... It equates to the net pressure imbalance on a ... | |
| About admission for aerospace eng. | 6/25/2011 |
| Q: What are qualification condition require for admission? A: I'm not sure if you mean grad school or as an undergrad... basically for grad school if you have a ... | |
| stall | 6/15/2011 |
| Q: Sir, At stall a plane or glider may fall at parabolic trajectory.Can you explain what cause the ... A: Basically I believe what you are referring to is that an airplane that loses lift (and thrust) is ... | |
| Scope of Aerodynamics | 6/12/2011 |
| Q: Sir, I am a student from India and have just completed my B.Tech in Aeronautical Engineering. I have ... A: I would disagree with that... basically if you are interested in experimental aerodynamics you may ... | |
| The A-Team Movie | 6/10/2011 |
| Q: "As seen in the movie, can a parachute suspended tank, wherein the A-Team escape from an exploding ... A: This is a bit out of my area also and I haven't seen the movie, .... but I'd say the short answer is ... | |
| High altitude oxygen level | 5/27/2011 |
| Q: Even though I am a graduate aero engineer (1950, 21 yrs mech. design) my question is: An airplane at ... A: Not exactly my specialty, but I'll take a stab.... The cabin is pressurized via bleed air from the ... | |
| aircraft | 5/15/2011 |
| Q: is possible aircraft stoping midair A: technically yes... practically no... a typical aircraft requires air moving over the surface in ... | |
| Basic of aeronautical | 4/13/2011 |
| Q: I want to know that at the age of 16-20... how anyone can learn basic part of that subject??Is there ... A: Certainly by the age of 16-20 one can learn the basics of aerodynamics. Regarding books, my best ... | |
| Fluid Mechanics | 4/11/2011 |
| Q: Janus I have a fan/blower that I am going to use as fume extractor; therefore I am going to direct ... A: Well reducing the inlet to 5 inches will increase the inlet velocity of the air and will lower the ... | |
| lift | 2/22/2011 |
| Q: I understand about the lift created by the design of the wing and the similar force of a sail on a ... A: The force(s) acting on an airfoil (wing) can be either up or down... basically a wing deflects (or ... | |
| Masters | 1/10/2011 |
| Q: I am in 3rd year of Aeronautical Engineering. After Completing my Engineering i want to do master in ... A: There are numerous universities that have programs in aerodynamics... The university I work for is ... | |
| Pressure exerted by wind | 12/26/2010 |
| Q: I just wanted to know just how much pressure is exerted by the air on a car's windscreen at a speed ... A: Certainly you could use that as a guide, but the vehicle's (component) aerodynamics all kind of work ... | |
| aerospace | 12/23/2010 |
| Q: sir, I'm barath from INDIA,TAMILNADU,MADURAI.I am very keen to do aerospace engineering.My ... A: I'd suggest physics and mathematics... (a good foundation in the basics is a must)... there are ... | |
| A question | 12/22/2010 |
| Q: Sorry to take your time sir, but I am doing some research on Aerospace engineers as a homework but I ... A: Sorry for the delay in getting to you.... I have an interest in designing a mechanism for ... | |
| CFD problem | 12/6/2010 |
| Q: I want to modeling a turbulent flow around a sphere. I read some paper that they said ... A: The Spalart-Almaras one-equation turbulence model is better than using an algebraic model, but I ... | |
| science fair rubric or checklist for engineering project | 11/21/2010 |
| Q: I'm trying to find a rubric or simple checklist for science fair engineering project, middle school ... A: You should be able to google science fair rubric ... This what I have received before as a science ... | |
| aircraft control | 11/5/2010 |
| Q: what effects do 'knife edge' trailing edges have on elevators and ailerons as compared to rounded ... A: Knife edges create a well-defined point of separation off the trailing edge but often times the flow ... | |
| interview | 10/19/2010 |
| Q: Janus, I'm in P.O.E and I have to interview an engineering expert and I've chosen you. I need to ask ... A: Please describe your engineering field. Aerospace Engineering What is your current job title? ... | |
| Aerospace | 10/7/2010 |
| Q: Sir. i am doing BS(HONS) in physics. i am in 5th semester.Can i get admission in MS program in ... A: I feel you would probably do well in an aerospace engineering MS program with a physics background, ... | |
| Performance specs of aircraft | 9/24/2010 |
| Q: I am researching B-17 flying fortresses. In researching the specs, the first 3 sources contradicted ... A: B-17's were built over many years and many improvements were incorporated as they came along... ... | |
| Wind Turbine | 9/13/2010 |
| Q: We wish to build a vertical axis wind turbine in an area rated for very low wind (middle TN). The ... A: Sorry for the delay in getting back to this... Basically the fewer blades the better... many ... | |
| for enquiry | 9/4/2010 |
| Q: Sir,I want some information about aeronautical engineering subjects A: This is quite a general question... basically in aeronautical engineering there is structures, ... | |
| aerodynamics | 9/1/2010 |
| Q: please explain the concepts of referenece area,wetted area,and ground effect on aircraft while ... A: In the field of aerodynamics it is advantageous and convenient to work with dimensionless ... | |
| Aeronaticaul Engineering | 8/19/2010 |
| Q: How much education do you need to be an aeronaticaul engineer? A: There are many universities that have aero programs... so you can begin practicing as an aero ... | |
| aeronautics | 8/9/2010 |
| Q: I'm measuring upthrust of various wing types and angle of attack. On a general consensus, what ... A: When you say upthrust, I'm assuming you mean lift? also, when you say wings, are you meaning 2D ... | |
Aeronautical Engineering
Answers by Expert:
Mark Janus
Top Expert on this page
Expertise
I can answer questions about aerodynamics (high speed and low speed), internal fluid flow, computational methods (CFD, some design, etc.)
Experience
25+ Aerospace Engineering, University Professor
Organizations
Mississippi State University
AIAA
SIAM
Publications
AIAA
SIAM
Education/Credentials
PhD Aerospace Engineering
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