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About Mark Janus
(Top Expert on this page)

Expertise
I can answer questions regarding aerodynamics, fluid flow, and computational simulations.

Experience
turbomachinery flow analysis, computational fluid dynamics

Organizations
Mississippi State University

AIAA

SIAM

Education/Credentials
Ph.D. in Aerospace Engineering

   

You are here:  Experts > Science > Aerospace/Aviation > Aerospace/Aviation

SubjectDate AskedExpert

Career as a Pilot/Edu10/12/2007Dottie Norkus
  Q: Although i live in Canada, i think that my question is relevant. Im interested in a career as a ...
  A: Sebastian Well, if the airlines in Canada are like the airlines in the USA then...... 1) My ...
Rocket Engines10/11/2007Mark Janus
  Q: I was once told that a rocket engine is actually an inertial propulsion device (totally unlike a jet ...
  A: No it is not true that you must have something (surrounding you) to "push" on for propulsion... A ...
Rocket Engines10/10/2007Mark Janus
  Q: I was once told that a rocket engine is actually an inertial propulsion device (totally unlike a jet ...
  A: I would have to say that the "speed limit" you refer to for air, land and sea vehicles is imposed by ...
Rocket Engines10/10/2007Mark Janus
  Q: I was once told that a rocket engine is actually an inertial propulsion device (totally unlike a jet ...
  A: A rocket engine and a jet engine operate on the same basic principle yet the jet must capture its ...
DUIs and Flight Attendants10/4/2007Dottie Norkus
  Q: Is there a policy within the FAA that states that those with DUI convictions are not able to be ...
  A: Maria No, there is no FAA regulation of any sort prohibiting getting hired with a DUI. In fact, ...
Thrust from inlet + diffuser10/2/2007Mark Janus
  Q: I've read that only 8% of the thrust for a supersonic aircraft is generated by the engine, but the ...
  A: Rajesh, I'm not sure of where you read that, but... For an aircraft that goes supersonic (like ...
''Differences''9/27/2007David J Bentley
  Q: I BELIEVE YOU ARE DOING FINE IN YOUR WORK OF HELPING US, THANKS ALOT. I DO HAVE ONE QUESTION ABOUT ...
  A: Sorry Joseph, you got me there. As the training at Embry Riddle is oriented towards pilot training, ...
BA degree in aviation9/26/2007Dottie Norkus
  Q: I have been taking flying lessons since I was 12. I am a junior in HS. I am planning on earning a ...
  A: Chase 1) I would like to have your ideas of colleges and the type of degree I should look at for ...
looking for good University9/18/2007David J Bentley
  Q: This is md anwar completed my B.tech Aeronautical engg looking for good opportunity in aerospace ...
  A: Aerospace is not my speciality. Embry-Riddle has a good reputation all round. The other universities ...
looking for good opportunity9/18/2007David J Bentley
  Q: This is md anwar completed my B.tech Aeronautical engg looking for good opportunity in aerospace ...
  A: I am not an expert in this subject but I know that Flight International magazine produces a very ...
Cervical laminectomy9/17/2007Curtis J. Edwards, MD, FACS
  Q: I was diagnosed with Brown-Sequard syndrome, in which spinal stenosis places pressure on the spinal ...
  A: You will be required to complete a certification physical. If you have significant range of motion ...
Scope of Avionics9/16/2007Marc Ebelini
  Q: sir, I am Arslan from Pakistan.I have gotten Admission in avionics engineering at CAE,Pakistan. ...
  A: Which is better? That's is open to what you perceive is better. Higher pay or better working ...
Cluster plane crashes9/15/2007Christopher McKenna
  Q: During the search for Steve Fossett... I noticed there were areas where several old plane wrecks ...
  A: Assuming that we're not talking about the Bermuda triangle :), I can only hazard a guess. I'm not ...
about aerospace engineering9/9/2007Joel Osborne
  Q: this is suji from india... i am doing my under graduation in information technology... my question ...
  A: Suji, thanks for the question. You would need to consult with the university to see if they can ...
DWAI & Class 2 medical certificate9/7/2007Dottie Norkus
  Q: I was convicted of a DWAI while in NY in May. I have no flight hours/experiance and am trying to ...
  A: John, You don't need to show anything to your AME regarding a DUI/DWAI. There is a box on the ...
avation9/6/2007Harris Boyiatzis
  Q: How many and what are the different signs at airports??
  A: This is a good question and it might be slightly challenging to find the right answer. First of all ...
pressure in space vs pressure in water9/2/2007Joel Osborne
  Q: Before I ask my question, I just want to Thank You for devoting your time to answer questions. I ...
  A: Jacqui, thanks for the great question, not a lot of people think about this. Okay, the problem is ...
Query regarding LASIK8/30/2007Curtis J. Edwards, MD, FACS
  Q: sir, as i am myopic with high powers.i would like to ask you if I'll be eligible for a CPL after ...
  A: I am assuming the acronym CPL is "civilian pilot license." What you are really asking is, "am I ...
Getting Started With an Aero/Astro Science Project8/29/2007Joel Osborne
  Q: Osborne, I am currently a junior in high school. I am very interested in pursuing a career as an ...
  A: Patrick. Okay if you want an experiment that you could actually do, why don't you build a basic ...
mba in aviation8/28/2007David A. NewMyer
  Q: i am a final year student doing my bachelor degree in computer science and engineering. I have ...
  A: This is a good question. The answer is, yes, there are normally pre-requisite classes for any MBA ...
Aeronautical/Aerospace engineering8/25/2007Joel Osborne
  Q: Respected Sir, Can I get direct admission in Master Degree Aerospace Engineering course in US of CAN ...
  A: Swati, thanks for coming back. Yes, it will be admittted, however it might have limitations, you ...
Getting Started With an Aero/Astro Science Project8/24/2007Joel Osborne
  Q: Osborne, I am currently a junior in high school. I am very interested in pursuing a career as an ...
  A: Patrick. Sorry for the delay. I should have written you sooner, but I thought about this question ...
aeronautical engineering8/24/2007Joel Osborne
  Q: i have cleared my 12th grade last year(2006) with physics,chemistry and biology. but i am interested ...
  A: Lalit, thanks for coming back. Okay basically broken down: More math, up to vector level math. ...
aeronautical engineering8/22/2007Joel Osborne
  Q: i have cleared my 12th grade last year(2006) with physics,chemistry and biology. but i am interested ...
  A: Lalit, thanks for the question. Answer really is inside of you. I do not have enough experience to ...
engine assembly by a private a&p/ia8/21/2007Marc Ebelini
  Q: Mr Marc: my friend and i have 2 to 3 hi time 1966 io 360 continental in sky masters that need ...
  A: Living in Florida is too far for me to help I would not know anyone in your area. An engine with no ...
continental io360 piston engine assemblers8/21/2007Joel Osborne
  Q: my friend and i own two skymaster with three high time engines all non turbo, we have two cores. i ...
  A: Ben, to be quite honest, I've never been near where you are. However I will give you some alternate ...
Application for foreigners?8/21/2007Dottie Norkus
  Q: I am a SriLankan(South Asian Country). Also an holder of valid CAA PPL license. Allthough I am ...
  A: "I am interested in joining NTSB, as a student Volunteer & work there itself." There are limited ...
Aeronautical/Aerospace engineering8/20/2007Joel Osborne
  Q: Respected Sir, Can I get direct admission in Master Degree Aerospace Engineering course in US of CAN ...
  A: Swati, thanks for the question. Good news, is that you can go for the masters, better news is you ...
Yaw and bank8/19/2007Joel Osborne
  Q: To my understanding, yaw will cause a change in heading. So why do we bank to turn, i.e. change ...
  A: Shearer, thanks again for coming back. Okay, I have to go a bit more technical here. The velocity ...
Yaw and bank8/19/2007Joel Osborne
  Q: To my understanding, yaw will cause a change in heading. So why do we bank to turn, i.e. change ...
  A: Shearer, thanks for the question. Yaw does not produce turns, it actually just changes the actual ...
space ships8/18/2007Mark Janus
  Q: I know this is'nt exactly your area, but if you were in space on a space ship and you lit up a ...
  A: First of all, you would NEVER do this, but in theory the flame would extinguish itself because there ...
why use bank instead of just yaw8/18/2007Mark Janus
  Q: To my understanding, yaw will cause a change in heading. So why do we bank to turn, i.e. change ...
  A: The question is a bit out of my area (i.e. stability and control), but yes a turn from yaw alone is ...
3rd class medical after cancer8/15/2007Curtis J. Edwards, MD, FACS
  Q: Edwards, I recently got over leukemia in the orbit of my eye. It left me with a little wave in my ...
  A: I would call FAA at 405.954.4300. The waiting period for certification consideration varies with ...
Information8/12/2007Marc Ebelini
  Q: I Mohd Younus Ahmed from INDIA did my Bachelor of Technology in Electronics & Instrumentation ...
  A: Now you have me confused. You can work in any field you want regardless of your degree. In the ...
Information8/12/2007Marc Ebelini
  Q: I Mohd Younus Ahmed from INDIA did my Bachelor of Technology in Electronics & Instrumentation ...
  A: Did you followup and contact Embry Riddle? An educational institute are the only ones that can ...
Information8/11/2007Marc Ebelini
  Q: I Mohd Younus Ahmed from INDIA did my Bachelor of Technology in Electronics & Instrumentation ...
  A: I am not familiar with the education in your country but I will try to response the best I can. The ...
regarding aerospace and aeronautical engineering8/9/2007Joel Osborne
  Q: i want to go to nasa and i have interest in making aeroplanes , space shuttle and i also want to go ...
  A: Rahul, I too have this dream. However the deam comes with an incredible amount of hard work. I ...
stress on space shuttle8/9/2007Joel Osborne
  Q: is their more structure stress on the space shuttle at launch or re entry
  A: Answer is really at the launch since there is more weight on the shuttle. However there is a double ...
Flight Simulator8/7/2007David A. NewMyer
  Q: I live in San Francisco and this question may be off-topic to what you anwser, if it is, perhaps you ...
  A: I am not specifically aware of Level D sims that are available for hourly use. Normally, operators ...
Course after Bachelor in Electronics8/6/2007David A. NewMyer
  Q: I am in final year of electronics engineering. I wanted to know what courses are available so that ...
  A: I think your best bet would be to find an Avionics (or Aviation Electronics) course to take--this ...

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Questions by
Active Experts:
Cal TaylorChristopher McKennaMark Smith
Capt PaulMark JanusLaura Laster
Harris BoyiatzisDavid J BentleyDottie Norkus
David A. NewMyerMarc Ebelini 

     
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