| Subject | Date Asked |
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| Inspections | 11/10/2009 |
Q: Marc, I'm confused about 100-hour & annual inspections. I recently purchased an aircraft and the ... A: Actually I answered your question. It's matter of semantics. As I mentioned the 100 hour inspection ...
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| Intermitted Transponders | 11/10/2009 |
Q: Question re intermittent transponders: Set-up: There are two transponders installed in my plane, ... A: Sure a lot of info to digest. Since the problem started with the first transponder let's start with ...
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| Inspections | 11/5/2009 |
Q: Marc, I'm confused about 100-hour & annual inspections. I recently purchased an aircraft and the ... A: The annual and 100 hour are basically the same except that the annual requires an authorized ...
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| Microphone voltage | 10/29/2009 |
Q: Does a typical aircraft radio supply voltage to the headset microphone? I have an electret mic that ... A: Originally the old aircraft radios used carbon mic's that used the voltage to excite the carbon ...
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| ATC / ATM | 9/9/2009 |
Q: sir i m doing ME(AVIONICS). i want to do my project related to air traffic control / air traffic ... A: Sorry I am not an employment counselor but hope this gentlemen can answer your question. He is the ...
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| Future job intrest | 9/7/2009 |
Q: I was considering going into Aerospace Engineering, But I mostly want to stay within the atmosphere, ... A: Hope this gentlemen can help you. He is the VP of Enrollment Management, Mr. Don Bishop at ...
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| Cause of a Cracked Intake Valve | 9/6/2009 |
Q: Not too long ago, my dad's plane (a Cirrus SR22-GTSx G3 Turbo, if that helps) went in for its ... A: There can be many reasons for a cracked valve. To determine the exact cause would require additional ...
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| windmills | 8/31/2009 |
Q: I am trying to make a windmill. Please look at my sketch. Can you think of an answer to my two ... A: While windmills are not my thing I do know a little about aerodynamics. Your drawing is a little ...
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| Air pressures | 8/28/2009 |
Q: I was wondering what are the comparisons of the pressure an astronaut experiences in space to that ... A: The pressures are opposite. At sea level an open gage reads "0" pressure when actually the pressure ...
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| Distance Study in MS in Avonics | 8/22/2009 |
Q: I have completed my BE in Electronics and communication from India and i am presently working in a ... A: Hope this gentlemen can help you. He is the VP of Enrollment Management, Mr. Don Bishop at ...
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| MS in Avionics | 8/20/2009 |
Q: I have completed BE in Electronics & Communication(2009) planning to pursue higher Studies in ... A: Hope this gentlemen can help you. He is the VP of Enrollment Management, Mr. Don Bishop at ...
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| King KX-155 Audio Out | 8/5/2009 |
Q: How does this radio connect to a single ended audio panel? Can the LO signals be strapped to ground? ... A: With rare exceptions all electrical items should share a common ground. The ground is the reference ...
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| PTT trouble | 7/24/2009 |
Q: I'm working on a radio install on an ultralight using a Vertex VXA-220. Basicly running an extension ... A: Let's get some info on the Radio. It appears to be a straight forward aircraft type system where an ...
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| PTT trouble | 7/23/2009 |
Q: I'm working on a radio install on an ultralight using a Vertex VXA-220. Basicly running an extension ... A: I'll try to analyze your problem but not knowing the details of your equipment I will make ...
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| Geometric Tolerancing in space industry | 7/15/2009 |
Q: I was wondering how geometric tolerancing is used in the space industry. If you are unable to answer ... A: This question should be directed at NASA. In the mid sixties I remember attending a meeting where ...
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| position of aero engineers in airlines | 7/6/2009 |
Q: I want to get job in airlines and airport.what is the working position of aeronautical engineer in ... A: Instead of using the I cannot answer this question section because this is not a technical question ...
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| Avionics-EGPWS | 6/17/2009 |
Q: Is it possible to install an EGPWS in an aircraft that does not have a FMS computer? Is there any ... A: I am no longer in the avionics business to give more up to date information on EGWPS or TAWS ...
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| 2 differnt comm in 1 audio panel | 6/11/2009 |
Q: I am laying out new comm,to replace the old collins radio..Here's the problem that im ... A: Had no luck in getting pin out info for the equipment you want to wire in your aircraft. However ...
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| Speed of light | 5/28/2009 |
Q: i have a question that who did the successful experiment of calculating the speed of the light? i ... A: This sounds like a home work question but I will say that the first correct close guess was James ...
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| aviation and aerospace | 5/26/2009 |
Q: differentiate between aviation and aerospace engineering A: Aviation deals with vehicles that fly in the earth's atmosphere and aerospace deals with vehicle ...
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| Cessna-152 wing and nose gear | 5/18/2009 |
Q: Could you tell me when the wing struts on a Cessna-152 are unbolted, how are the wings kept in ... A: Let's answer the last question first. I have never seen a specification on the force required to ...
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| Radio Static Onset | 5/18/2009 |
Q: I have a 1964 Cessna 172 with a King KX-170B xcvr and a COM 120 xcvr. I was in the air when I ... A: If problem has just surfaced then you are looking at a failure of a component. Since I don't know ...
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| Plane trails | 4/22/2009 |
Q: after watching airplanes in flight at different altitudes I am wondering why the contrails are so ... A: While this question may be a little out of my ares of expertise. As a pilot. I've known the the ...
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| non direcectional and omni-directional | 3/8/2009 |
Q: why ndb is non-directional and not omni-directional, when both transmit in all direction. ANSWER: ... A: It was a poor question because the writer knew what he was talking about but did not phase it ...
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| non direcectional and omni-directional | 3/7/2009 |
Q: why ndb is non-directional and not omni-directional, when both transmit in all direction. A: Is this a quick question? Non directional and omni direction are the same thing. If it is omni it ...
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| Brake pedals | 12/7/2008 |
Q: I was wondering how it can be that pedals in an airplane are used both for braking and for ... A: First of all not all aircraft use the rudder pedals as the brake pedal. Neither are all aircraft ...
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| Wiring 2 transceivers to intercom | 11/25/2008 |
Q: Like a previous question reference wiring to comm radio to an intercom - no audio selector panel. We ... A: You could have some time if you acquired the wiring diagrams for the radios. Most companies will ...
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| Wiring 2 transceivers to intercom | 11/14/2008 |
Q: Like a previous question reference wiring to comm radio to an intercom - no audio selector panel. We ... A: okay I got the picture and my recommendations that obviously says rewire the system and end up ...
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| Wiring 2 transceivers to intercom | 11/14/2008 |
Q: Like a previous question reference wiring to comm radio to an intercom - no audio selector panel. We ... A: Let me begin by saying that what you have sounds like a mess. First of all trying to modify or add ...
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| Early jetliner wings | 11/10/2008 |
Q: The early jet airliners tended to have clean wings, both on the top and underside except for the ... A: While I don't have any detailed information to answer your question because I never worked for ...
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| Aeronauticals | 8/31/2008 |
Q: what is the relationship between aeronautical engineering and mechanical engineering and is it ... A: While my job is to answer technical questions I'll attempt to help you. Mechanical engineering is a ...
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| aircraft switches | 7/29/2008 |
Q: How do i interface an intercom to two kx 170b radios with speaker switch in system, existing wiring ... A: This becomes a tricky question because I have no idea of how it was originally wired. To begin with ...
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| Aviation Institute of Mechanics | 7/9/2008 |
Q: My stepson is talking to people at Aviation Institute of Mechanics in Lawrenceville, GA. I am ... A: Sorry I don't know much about that school. However I will say that as an old vintage A&P mechanic as ...
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| aerospace and aeronautical engenering | 6/30/2008 |
Q: sir i am 10th studying student i want to ask you that if we can do both aerospce and aeronautical ... A: I get so many e-mail from students like yourself and I can only refer them to web sites like ...
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| Maintenance | 5/19/2008 |
Q: I own a Cessna 150 and have some questions about how to proceed. My ELT Battery needs to be ... A: You did not mention the type of ELT but I'll give my own opinion as to what I did when in business. ...
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| AMTENNA ON AIR FORCE ONE | 5/13/2008 |
Q: ON THE LOWER SIDES 0F THE OLDER AIRFORCE ONE VC-137B THERE ARE WHAT APPEAR TO BE ANTENNAS THAT ARE ... A: Finally received a challenging question. So challenging I am hesitant to respond. Remember there are ...
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| Devices on aircraft wings? | 4/22/2008 |
Q: On the trailing edges of many aircraft wings and horizontal stabilizers I see multiple "string/cord ... A: You won't believe this, but they are simply static wicks needed to drain the electrical charge off ...
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| Avionics | 4/12/2008 |
Q: lam an Indian student.I've completed my Undergraduation in Electronics and communication. I wish to ... A: Avionics is a specialized field geared to electronics as applied to aircraft. I am not a employment ...
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| job oppurtunities in NASA usa in Avionics | 3/30/2008 |
Q: plz send me ur MAIL ID i want to be in touch with to know about avionics and systems integration. i ... A: Think you have missed the point. I am not an employment consular. I answer technical questions, but ...
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| Engines | 3/18/2008 |
Q: What is the power rating in horsepower of some common commercial light aircraft engines? For ... A: Sorry to say I do not maintain a data base for such information. Jet engines are not rated in ...
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| Interested In Aircraft Maintenance Engineering | 3/8/2008 |
Q: Marc hope everythings good at your end. Mr.Marc i am an engineer with major in Electronics and ... A: To work on aircraft you need a mechanics license. These will vary from country to country. In the ...
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| Avionics... | 2/24/2008 |
Q: Sir, Im Doing my Electronics and communication engg presently (3rd yr).Im very much interested in ... A: www.erau.edu will take you to the Embry Riddle web site that can help you. While electronics is a ...
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| transponder (cessna 152) | 2/17/2008 |
Q: does the solid-state blind encoder transponder works same as the static system works for the ... A: Actually I answered all your questions but apparently you are still confused. But first I must ...
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| transponder (cessna 152) | 2/17/2008 |
Q: does the solid-state blind encoder transponder works same as the static system works for the ... A: "The tubing that connects this opening goes to your static reading instruments whether it be ...
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| transponder (cessna 152) | 2/17/2008 |
Q: does the solid-state blind encoder transponder works same as the static system works for the ... A: The static system is required to read the outside air pressure so that the pressure altitude is ...
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| confusing for future study | 2/13/2008 |
Q: what is aircraft maintainance enginnering? A: Aircraft maintenance engineering applies to many areas of aircraft maintenance. From designing the ...
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| Supercritical Airfoils and Shockwave | 2/11/2008 |
Q: the min. pressure point on this type of wing is somewhere at mid-chord. After this point, the ... A: You appeared to have answered your own question. Beyond that I cannot offer any further detail. ...
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| Question | 2/8/2008 |
Q: Can i get a short note on "reliability of aircraft engines and power plant" ANSWER: On what extent ... A: Without getting into any exact details about maintenance this should satisfy your short note ...
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| Question | 2/7/2008 |
Q: Can i get a short note on "reliability of aircraft engines and power plant" A: On what extent do you want reliability information. Statistical information is kept by the FAA ...
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| separation point vs transition point | 11/23/2007 |
Q: I'm very confused about separation point vs transition point in the airfoil. what's the differences ... A: My studies of aerodynamics goes back to the 1940's so new terms are sometimes used. The transition ...
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| Push to talk switch | 11/21/2007 |
Q: My push to talk switch has fell apart it has 4 wires red black white and ground and two switches ... A: Glad I was able to help. Don't know what was accomplished in your aircraft but PTT is very simple. ...
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| Push to talk switch | 11/20/2007 |
Q: My push to talk switch has fell apart it has 4 wires red black white and ground and two switches ... A: I said you need a double pole switch instead of two switches. You tie the grounds to the common and ...
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| Push to talk switch | 11/20/2007 |
Q: My push to talk switch has fell apart it has 4 wires red black white and ground and two switches ... A: You don't mention if the switch is hard wired into the system or uses a plug to go into the mike ...
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| Scope of Avionics | 9/16/2007 |
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 ...
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| engine assembly by a private a&p/ia | 8/21/2007 |
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 ...
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| Information | 8/12/2007 |
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 ...
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| Information | 8/12/2007 |
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 ...
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| Information | 8/11/2007 |
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 ...
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| guided missile | 7/11/2007 |
Q: Does the guided missiles really exist and are used for real missions? Can they really follow a ... A: This is not my area of expertise but I will answer the best I can. Of course there are guided ...
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| Need help regarding space engineering | 6/18/2007 |
Q: I have BTECH dgree in electronics & Communication engg and working on Flight Management System with ... A: Sorry, but my area of help is technical, not employment issues. Have no idea why Allexperts keeps ...
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| Aviation engineering vs Aerospace engineering | 5/30/2007 |
Q: I am 12 standard student from India, and just got selection in iit. I have to choices, one is ... A: Basically we are dealing with two areas of expertise. Mainly the difference evolves the environment. ...
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| the wide body jet aircraft | 5/28/2007 |
Q: explain the impact the wide body jet aircraft on the aviation industry with regard to passenger ... A: It's simple economics. Getting a large number of people from one place to another is cheaper. Let me ...
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| System analysis and control engineering | 5/10/2007 |
Q: respected Marc Ebelini, I'm an aerospace engineering student studying in ... A: Normally my job is to try to answer technical questions related to aircraft maintenance. First let ...
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| Jet engine shutdown | 3/25/2007 |
Q: Hallo! Many jet engine shutdown procedures require you to run the engines at a certain RPM above ... A: All engines including piston type have unique metallurgical problems that must addressed. In all ...
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| Experts Needed for dissertation | 2/21/2007 |
Q: I am requesting your assistance on my dissertation entitled, "The Impact of Emerging Technology in ... A: Read your criteria and I don't meet it. Been away from aviation for twenty five years although I can ...
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| definition of pressure sensors | 1/31/2007 |
Q: How about the way they are measured. Does the pressure transmitter measure amps and the transducer ... A: Now apparently you want to know about pressure sensors. Which of course are part of the transducer. ...
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| definition of pressure sensors | 1/25/2007 |
Q: Is there a difference between an oil pressure transducer and an oil pressure transmitter? Do both ... A: Not that I am aware of. They both do the same thing so I think it's a matter which way you look at ...
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| Old altimeter? | 12/18/2006 |
Q: I found an old, black guage at an estate sale that has on its face "The Bryant Heater & Mfg. Co.", ... A: It's obvious not an aircraft altimeter. To research it further I would go see if the company has a ...
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| Bonanza Yoke PTT Switch | 10/2/2006 |
Q: Where can I find a replacement Push to Talk Switch for a BE 55 Baron Yoke. The head broke off of ... A: Cannot answer your question because I do not know if the switch was a retrofit or original ...
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| Pulsejet | 9/3/2006 |
Q: I want the methodology design of thermodynamics and Aerospace for Pulsejet Engines. A: Have no idea as to how much information you need. Basically pulse jets are like the old gasoline ...
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| space | 8/5/2006 |
Q: hey i would appreciate if you could help me out, thank you. if i were to land in mars, how would i ... A: Sorry but you are asking the wrong person, my area is aviation not space technology. Can only tell ...
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| avionics | 7/22/2006 |
Q: i m anupam goyal from india and i have just finished my bachelars in aeronautical engineering with ... A: To earn the biggest paycheck you would need to work for one of the large aircraft companies. That ...
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| Avionics | 7/1/2006 |
Q: I am an Indian girl,doing my final year currently in ECE EnGG. Can you tell me what exactly does ... A: Avionics is the application of electronics in aviation. It applies to the sales installation and ...
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| kerosen oil fuel | 5/19/2006 |
Q: the kerosene oil that used in aeroplane as a fuel,is it common kerosene oil as we use in our home?or ... A: You are asking how crude oil is broken down to the various grades. That requires the question to be ...
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| Transponder Strobe Line | 4/13/2006 |
Q: I had a local avionics shop install a Garmin 300XL GPS/Comm in my plane for VFR use, with later ... A: Please bear with me as my KT75 training certificate dates back to the early 70's and I no longer ...
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| Piston Engine CHT & EGT | 2/13/2006 |
Q: How are you? I am a flight instructor for airplane. I could not find clear answer about piston ... A: Do not mix CHT with EGT as they represent two different problems. CHT has to do with cylinder head ...
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| Greetings,
Are there DVD's... | 11/25/2005 |
Q: Greetings, Are there DVD's available that provide a detailed explanation on the following: - FMS - ... A: What you ask for would normally would be part of the flight training manual supplied by Boeing to ...
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| fly-by-wire | 11/2/2005 |
Q: What are the differences between flight control characteristics or Boeing aircraft and Airbus ... A: Sorry cannot answer your question because I do not fly or know anyone who flies this type of ...
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| Reciprocating engines | 10/20/2005 |
Q: Yours is one of very few AllExperts profiles which may be compatible with the nature of my question, ... A: This is an easy one. The propellers had to be pulled through at least two revolutions to make sure ...
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| airframe hours | 9/24/2005 |
Q: My name is Christian Rouse, and I work within the British MOD and I am trying to research a method ... A: Mr. Rouse: Recording airframe hours can be accomplished in many ways. Originally, there was two ways ...
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| contrails | 6/2/2005 |
Q: i work on this site as well, answering questions about brewing. anyway ive always wondered why ... A: I have to be honest with you I never heard of the vapor trails being sinister. They are natural ...
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| Lear Jet 24 engine | 5/17/2005 |
Q: --TO explain more since you said you didnt fully understand. I just figured I would update the ... A: If your asking about updating the engines on that old aircraft then you should be contacting ...
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| Lear Jet 24 engine | 5/16/2005 |
Q: I would like to buy a Lear 24 but since the aircraft is built in the late 60's or early 70's, would ... A: I do not fully understand your question but will attempt to give you some input. The age of an ...
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| Push to talk button | 5/4/2005 |
Q: The push to talk button on my Piper Warrior no longer seems to work. Do you have any suggestions on ... A: The push to talk button is wired parallel to the push to talk button for your microphone. Let me ...
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| Dear Sir:
Would you please... | 4/18/2005 |
Q: Would you please explain me the following abbreviations and introduce me some sources especially ... A: There are numerous abbreviations and fortunately I know the first three. It started out as ECM, ...
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| I apologise for not giving... | 4/14/2005 |
Q: I apologise for not giving you my background before shooting out my question. I have a Commercial ... A: I am surprised that someone with your background would ask this question because this is standard ...
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| I am very interested in gaining... | 4/12/2005 |
Q: I am very interested in gaining more knowledge on detailed desription, function and use of the ... A: Sorry for the delay in responding. Your question is quite involved since we are talking about ...
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| Armature testing | 2/2/2005 |
Q: We repair (rewind) armatures and need to confirm that the replacement winding is exactly the same ... A: Since this question was asked in the aviation section of, this web site I must assume the repaired ...
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| I want to read compass for... | 1/10/2005 |
Q: I want to read compass for example: 76'w and what does it mean of longtitude and lattitude. what ... A: Let's not confuse compass heading with Lat & Lon. 76 degrees means just that. Magnetic north is 76 ...
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| CF6-80C2A5F FADEC ENGINE | 10/30/2004 |
Q: WHAT IS THE FUNCTION AND LOCATION OF THE THRUST BALANCE CHAMBER? A: Unfortuneately I am not familiar with that engine. However, the term is used in describing the area ...
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| help | 10/5/2004 |
Q: as u enquired abt my interest is in propulsion and space technology like rockets missiles etc but i ... A: Space and super sonic speed technology is the future. Because the advanced studies are not taught in ...
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| help | 9/30/2004 |
Q: i m anupam goyal and a student of section A of aeronautical society of india. i wish to know which ... A: Sorry I didn't write sooner but all these hurricanes here in Florida have put us behind schedule. ...
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| can i still get my a&p | 7/7/2004 |
Q: I need to know if i can still get my a&p.i am currently a marine i have been working on harriers for ... A: I have been asked this question before and while I am not a lawyer I can quote the FAR's. I will ...
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| Turbo Fan &Turbo Jet Engines | 5/23/2004 |
Q: Respected Sir, What are the predominant features of the Turbo Fan Engines, that makes them ... A: Adding the larger ducted fan in front of the turbine allowed the engines to ingest more air at lower ...
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| Aircraft Structure (Jet Engine's Location) | 5/3/2004 |
Q: Why the Jet Engines are located below the wings? Is there any structural advantage? (Please answer ... A: Prime consideration is keeping the top of the wing clean for better lift. Placing the engine on top ...
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| Aero Engine / Power Plant | 4/20/2004 |
Q: Do port and starboard engines on a 737 for example spool-up in opposite directions and do propellors ... A: Jet engines spool up the the same direction. All commercial propellor aircraft rotate counter ...
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| aviation | 3/11/2004 |
Q: Respected expert I am faisal , flight dispatcher , from Pakistan. I have some questions . 1-what are ... A: In question one,are you refering to stages in a turbine engine? Question two. Where did you find ...
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