http://www.talkaboutaviation.com/group/sci.aeronautics/ $ en-us Copyright 2003-2005, Talk About Network. All Rights Reserved. 2008-11-22T09:11:44+00:00 TAN rss@talkaboutnetwork.com Discussion hourly 1 1970-01-01T00:00+00:00 http://tan12.talkaboutnetwork.com/images/spacer.gif http://www.talkaboutaviation.com/group/sci.aeronautics/ http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15210.html Sporge flooding of sci.aeronautics will commence in a few hours. This will render sci.aeronautics useless. For an example, see Sci.Crypt. Supernews filters out this sporgery spam. Get a better Usenet experience. Sign up for our risk-free trial t... supernews@[EMAIL PROTECTED] Discussion 2007-08-09T02:00:44+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15209.html I want to design a supersonic diffuser for a supersonic wind tunnel. i would like to know some bibliography about diffusser efficiency, entrance angle, second throat length . Can anyone help me?. Thanks Also look at Shapiros book on compressibl... Olin Perry Norton ltnorton@[EMAIL PROTEC... Discussion 2007-01-30T18:18:00+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15208.html And someone tell us how to explain how circulation induces lift to a budding pilot. Track the path of a single air particle as the airfoil approaches and passes. It will move, roughly, in a circle (aka circulation). A particle going over th... Jan-OlovNewborg ltnewborg@[EMAIL PROTECT... Discussion 2007-01-30T18:13:12+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15207.html what do you think about the spoilers mounted on the rear window? Id like to install one on my Audi A3 (for the aesthetics effect) but Im insecure about his effect on boundary layer. Do you think it can raise the drag? Short answer: Yes. The que... Paul Hovnanian P.E. ltpaul@[EMAIL PROTEC... Discussion 2007-01-30T18:12:03+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15206.html Im an aeronautical engineering student who is thoroughly confused about the difference between total and stagnation pressures in a flow (if any). When do we measure total pressure and when do we measure stagnation pressure in a given flow? Why d... steve podleski ltsteve.d.podleski@[EMAIL... Discussion 2007-01-30T18:11:14+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15205.html My feeling is that there is no full circulation because it stops at the stagnation points where there is upwash at the leading edge and downwash at the trailing edge BECAUSE of Bernoullis theory, however Bernoullis theory alone does not expla... Merlin Dorfman ltdorfman@[EMAIL PROTECTE... Discussion 2007-01-30T18:10:14+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15204.html Is Kutta Joukowski theorem still applicable in compressible (subsonic) flow? In other words, does the same circulation produces the same lift at 0.2 and 0.8 mach (V being the same, of course)? Marco Murmur ltMurmur@[EMAIL PROTECTED] gt Discussion 2007-01-30T18:06:06+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15203.html I want to design a supersonic diffuser for a supersonic wind tunnel. i would like to know some bibliography about diffusser efficiency, entrance angle, second throat length . Can anyone help me?. Thanks There is some discussion about supersonic... Olin Perry Norton ltnorton@[EMAIL PROTEC... Discussion 2007-01-30T18:16:40+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15202.html Unfortunately, there IS no simple explanation of the effect of airfoil camber without getting into advanced fluid mechanics and differential equations. I liked the explanation of a former sci.aero moderator, Mary Shafer- action of the lift daemons. ... T o d d P a t t i s t lttpattist@[EMAIL ... Discussion 2007-01-30T18:04:00+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15201.html If you are able to get very close to the approach end of a runway serving heavy jets (727 and up) you can usually see the downwash effect on the smoke trail as the airplanes cross the fence. AMAF if you can get very close to the centerline of the ru... WaltBJ ltwaltbj01@[EMAIL PROTECTED] gt Discussion 2007-01-30T18:08:51+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15200.html what do you think about the spoilers mounted on the rear window? Id like to install one on my Audi A3 (for the aesthetics effect) but Im insecure about his effect on boundary layer. Do you think it can raise the drag? Maybe, maybe not. The devi... Don Stauffer ltstauffer@[EMAIL PROTECTED... Discussion 2007-01-30T18:08:11+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15199.html Can anyone recommend me any book on UAV design or guide to build one from scratch? or experience doing them starting from the sizing equations to the final prototype? Thanks The laws of aerodynamics do not change depending on whether there is ... Don Stauffer ltstauffer@[EMAIL PROTECTED... Discussion 2007-01-30T18:07:29+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15198.html I choose not to teach the circulation theory to my students because I dont think it exists in the manner the term suggests it does. I understand what people are trying to explain by using the term circulation (basically upwash and downwash),... Don Stauffer ltstauffer@[EMAIL PROTECTED... Discussion 2007-01-30T18:06:54+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15197.html I choose not to teach the circulation theory to my students because I dont think it exists in the manner the term suggests it does. I understand what people are trying to explain by using the term circulation (basically upwash and downwas... Tom Sanderson lttdscanuck@[EMAIL PROTECT... Discussion 2007-01-30T18:05:23+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15196.html Think normal car differential - with the power input at the wheel shafts and power output at the input shaft. Considering the sync portion of the question: The problem here is to provide for load sharing without a tendency of the two engines t... PJ ltpj4380@[EMAIL PROTECTED] gt Discussion 2007-01-30T18:14:18+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15195.html I am researching professional societies in aeronautics. I am aware of the start of the IAS in 1930-32, I was also aware that the SAE has an aerospace division. In reading the history of the later, it turns out there was an American Society of Aeron... Don Stauffer ltstauffer@[EMAIL PROTECTED... Discussion 2007-01-30T18:09:39+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15194.html Can anyone tell me how a noise suppressor for a turbojet engine works? Most of the noise from a turbojet comes from shearing between the high-speed hot exhaust jet and the stationary cool ambient air. Most of the noise suppressors (aka hush-kits... Tom Sanderson lttdscanuck@[EMAIL PROTECT... Discussion 2007-01-30T18:04:39+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15193.html And someone tell us how to explain how circulation induces lift to a budding pilot. ..... A particle going over the wing will initially move forward and up due to positive pressure from the leading edge, then get pulled back and down ..... Any s... T o d d P a t t i s t lttpattist@[EMAIL ... Discussion 2007-01-30T18:03:17+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15192.html I have just done my Msc thesis on circulation control of a marine propeller duct. It also proposes a new type of non ducted propeller that can utilise the effect. It may be of interest to some people now or in the future so just in case anyone is i... Craig ltcraigward2000@[EMAIL PROTECTED] ... Discussion 2006-12-11T10:27:11+00:00 http://www.talkaboutaviation.com/group/sci.aeronautics/messages/15191.html Think normal car differential - with the power input at the wheel shafts and power output at the input shaft. amorrisonca1@[EMAIL PROTECTED] ltamorri... Discussion 2006-12-11T10:26:02+00:00 Search talkaboutaviation.com Aeronautics (aircraft design and construction) q http://talkaboutaviation.com/group/sci.aeronautics/search.html