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Aeronautical Engineering/Questions

SubjectDate AskedExpert
design of wind tunnel2/3/2012Paul Soderman
  Q: sir i,m willing to design and construct a wind tunnel so what are all the basic things needed to ...
  A: Vinodh I get many questions about wind tunnel design. Like any experimental facility, a wind tunnel ...
Aeronautics at Imperial1/27/2012Rajeevlochanam B A
  Q: Hey Rajeev, This is Animesh. I am currently a IVth year undergraduate student(Mechanical ...
  A: I can only assure you that there is a lot of scope for the aero-field for job prospects and it's an ...
Longitudinal stability1/10/2012Paul Soderman
  Q: Sir, I read that the tail plane generally has a negative setting angle and that it produces ...
  A: Sangeeth - A cambered airfoil will have a nose-up pitching moment relative to the aerodynamic ...
M.S Meronautical Engineering1/8/2012Paul Soderman
  Q: SIR I am doing my BE aeronautical engineering currently and I wish to pursue MS aeronautical in ...
  A: Abdul - Do a google search on engineering schools U.S. and visit website of any school. For example, ...
about future career to persue1/7/2012Paul Soderman
  Q: am completing my bachelors degree in electrical and electronics engineering from a developing ...
  A: Klutz - The best major is one that is of most interest to you. I do not know if you have an adequate ...
wind tunnel12/30/2011Paul Soderman
  Q: sir we need information about blower type open circuit wind tunnel for our project we are new to ...
  A: Ranjith I get many questions about wind tunnel design. Like any experimental facility, a wind tunnel ...
Aerospace engineering jobs prospects in the States12/30/2011Mark Janus
  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 ...
Full deflection Va correction formula12/19/2011Paul Soderman
  Q: I'm a pilot who routinely checks out in different airplanes. Every Pilots Operating Handbook ...
  A: David - I am not a pilot and am not familiar with Pilot Operating Handbooks. However, from an ...
Wind tunnel design12/9/2011Paul Soderman
  Q: I am now trying to develop a wind tunnel. Could you please advise me the basis of assigning the ...
  A: Yati - Yes, you can use a settling chamber with screens downstream of a blower. But the blower ...
Wind tunnel design12/8/2011Paul Soderman
  Q: I am now trying to develop a wind tunnel. Could you please advise me the basis of assigning the ...
  A: Yati - You haven't told me what kind of wind tunnel you are designing (open circuit, closed return), ...
higher studies12/8/2011Paul Soderman
  Q: i am a btech mechanical engineer. i will finish ma course in june 2012 and i got placed in l&t ...
  A: Generally, mechanical engineering students are qualified to take graduate courses in aerospace ...
Gliding flight.12/4/2011Paul Soderman
  Q: Sir, Air range in glide is defined as h/tan(theta) ; where h is the altitude through which the ...
  A: The answer to your question is a little involved. In a steady unpowered glide, the forces on an ...
Space Dynamics12/3/2011Paul Soderman
  Q: Sir, Consider an mass m( say a rocket) being launched from the surface of earth. Initially the ...
  A: Yes Sangeeth, you are basically correct, but a few things could be stated more clearly. As the ...
Space Dynamics12/2/2011Paul Soderman
  Q: Sir, Consider an mass m( say a rocket) being launched from the surface of earth. Initially the ...
  A: Sangeeth In the gravitational two-body problem, the specific orbital energy of the two bodies is ...
Supersonic inlet performance11/20/2011Paul Soderman
  Q: I am interested in doing a project on the supersonic inlet designs for my final year.I have a ...
  A: I am not sure what more I can add. Most dissertations include results that show how a technology ...
Aeronautical Engineering11/19/2011Paul Soderman
  Q: I reside in Dubai and will be joining Heriot Watt University in Edinburgh for mechanical engineering ...
  A: A masters degree in the UK is a great idea. Higher education is always a good investment. Aerospace ...
Improvements on existing composite helicopter11/16/2011Paul Soderman
  Q: I am researching for my university on how to make further improvements to the AW119Ke helicopter. ...
  A: I doubt I can think of anything that the designers have not already considered. But one thing does ...
Re:Lifting line11/14/2011Paul Soderman
  Q: Sir, There is a small correction. By "exam" I meant a national level entrance exam ( Like GRE in ...
  A: You are referring to Glauert's solution for the spanwise distribtion of airloads which can be ...
Re:Lifting line11/11/2011Paul Soderman
  Q: Sir, There is a small correction. By "exam" I meant a national level entrance exam ( Like GRE in ...
  A: OK Sangeeth - Once again you are taking me back to graduate school. If I understand the problem, a ...
Supersonic inlet performance11/9/2011Paul Soderman
  Q: I am interested in doing a project on the supersonic inlet designs for my final year.I have a ...
  A: AshokRaja - Supersonic inlet design has been studied for many years. The primary objective is to ...
Down wash in psi or hPa11/9/2011Mark Janus
  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 ...
AIAA11/2/2011Paul Soderman
  Q: Sir, You are the fellow of American Institute of Aeronautics and Astronautics. Could you please ...
  A: Saurav The AIAA membership levels including Fellow are described here: ...
Contraction duct11/1/2011Paul Soderman
  Q: In my university I'll design a contraction of a skydiving( closed tunnel with subsonic range), so I ...
  A: Vinicius You can find a discussion and guidelines for wind tunnel circuit design including ...
UAV10/31/2011Paul Soderman
  Q: Sir, I want to know,is the design of a UAV is the same as any aircraft model. S= ...
  A: Aircraft engineers have many tools to help them do their job. Typically, they might have a panel ...
Quiet birds10/30/2011Paul Soderman
  Q: What is the quietest flying bird ?
  A: The owl is the quietest flying bird thanks to a special wing/feather structure. During glide it is ...
UAV10/30/2011Paul Soderman
  Q: Sir, I want to know,is the design of a UAV is the same as any aircraft model. S= ...
  A: Saurav - Your equation for wing area is correct, but only for one flight condition. The value of Cl ...
Compressors10/28/2011Paul Soderman
  Q: Sir, I am really stuck with these doubts. Kindly sort them out: 1.What is the dependency ( or ...
  A: Sangeeth - You are taking me back to graduate school. Enthalpy is a state property of a fluid: h = ...
aeronautics10/27/2011Paul Soderman
  Q: does aeronautics have any relationship with formula1 racing?
  A: Yes - All race cars have drag and must be designed to minimize that force. There is drag on the ...
Final Year projects.10/24/2011Paul Soderman
  Q: I am soon entering into my final year of my polytechnic course of study. I am currently studying ...
  A: Caroline - I have not seen a book on this subject, but if you do a google search on 'aircraft with ...
Impulse turbines10/23/2011Paul Soderman
  Q: Sir, I read in Gas turbine engines by Farookhi that "Relative inlet angle to rotor B2 and Relative ...
  A: Without seeing the book I can't be sure. But we know that an impulse turbine such as a Pelton wheel ...
Final Year projects.10/23/2011Paul Soderman
  Q: I am soon entering into my final year of my polytechnic course of study. I am currently studying ...
  A: Caroline - They all sound like interesting projects to me. VTOL is difficult to design because of ...
Rotor blades10/17/2011Paul Soderman
  Q: Sir, In turbo machinery, what exactly is the origin of the torque on rotor blades and torque on ...
  A: 1. I don't understand statement one. Once a blade moves there is relative motion between the blade ...
Rotor blades10/16/2011Paul Soderman
  Q: Sir, In turbo machinery, what exactly is the origin of the torque on rotor blades and torque on ...
  A: Yes Sangeeth, that is pretty close. I like your analysis of shaft power and energy transfer to the ...
Rotor blades10/15/2011Paul Soderman
  Q: Sir, In turbo machinery, what exactly is the origin of the torque on rotor blades and torque on ...
  A: Sangeeth The primary torque of interest in turbomachinery is the torque of the drive shaft, which is ...
Wind Tunnel Graduation Project10/13/2011Paul Soderman
  Q: I am doing BSc. in Aeronautical Engineering in Emirates Aviation College, Dubai. I've got my ...
  A: Masimuddin There is no single answer to your question because wind tunnel contraction ratio depends ...
Requirements for my Masters in US10/12/2011Paul Soderman
  Q: I am Ashish Jayandar,am undergoing my B.E Aeronautical at present.I wish to pursue my M.S in the ...
  A: Ashish Each university has unique requirements. Check school websites such as U. of Washington - ...
Parasite drag10/8/2011Paul Soderman
  Q: Sir, Profile drag contains form drag and skin friction drag. Profile drag increases with velocity ( ...
  A: Sangeeth In a plot of drag versus airspeed, the initial part of the curve will descend to a minimum ...
low speed subsonic open wind tunnel10/7/2011Paul Soderman
  Q: sir want to know about the low speed subsonic open circuit wind tunnel.i want to know how to design ...
  A: Abdul You can find a discussion and guidelines for wind tunnel circuit design including contractions ...
Finite wing10/6/2011Paul Soderman
  Q: Sir, What will be the variation of sectional lift coefficient (cl)along the span, of an Finite ...
  A: Sangeeth An elliptically loaded wing, which should not be confused with an elliptically shaped wing ...
hinge moment parameters10/6/2011Paul Soderman
  Q: I am a student of aeronautical engineering in Argentina. My question is how to measure in the wind ...
  A: Sebastian Chdelta is the change of hinge moment with flap angle. Chalpha is the change of hinge ...

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Paul Soderman

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Expertise

Aeronautics, Fluid Mechanics, Aeroacoustics, Noise Control, Muffler Design, Wind Tunnel Research.... I know nothing about India - do not ask about schools, jobs, application requirements, career choices, etc. for India. Please, no text message verbiage; I prefer full words in full sentences. Thanks.

Experience

38 years as research engineer at NASA

Publications
AIAA, NASA

Education/Credentials
B.S. and M.S. Aeronautical Engineering - U. of Washington Graduate work Standford U.

Awards and Honors
AIAA Associate Fellow (American Institute of Aeronautics and Astronautics)

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