Europa-List Digest Archive

Wed 09/05/07


Total Messages Posted: 9



Today's Message Index:
----------------------
 
     1. 04:03 AM - Re: Old Sarum Fly in (G-IANI)
     2. 04:17 AM - Was Nothing new then now propeller twist (David Joyce)
     3. 06:06 AM - Re: FS 02 (rampil)
     4. 06:58 AM - New Location for FLIGHT CRAFTERS (rlaviation@aol.com)
     5. 10:15 AM - Re: Fuel Tank leak was it empty (Alan Burrows)
     6. 11:44 AM - Re: Re: Fuel Tank leak was it empty (Sidsel & Svein Johnsen)
     7. 02:35 PM - Re: ICRA rant off topic (Rowland & Wilma Carson)
     8. 05:13 PM - Re: ICRA rant off topic (Rob Housman)
     9. 05:16 PM - Re: ICRA rant off topic (Jack Hilditch)
 
 
 


Message 1


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    Time: 04:03:21 AM PST US
    From: "G-IANI" <g-iani@ntlworld.com>
    Subject: Old Sarum Fly in
    Old Sarum Europa Fly In Saturday September 15, 2007 Free Landing for Europas, Fuel available Come and meet the three resident Europas see Mod 64B (High Top with lowered cowl and bigger screen) Non Flying builders and potential owners Welcome You might even get a ride If you plan (weather permitting) to attend please contact Ian Rickard on 01483 714096 or e-mail (g-iani <mailto:g-iani@ntlworld.com> @ntlworld.com) By letting me know we can organise reserved Tables for Lunch (or Barbeque depending on numbers) Ian Rickard #505 G-IANI XS Trigear Europa Club Mods Rep (Trigear) e-mail mods@europaclub.org.uk or direct g-iani@ntlworld.com


    Message 2


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    Time: 04:17:45 AM PST US
    From: "David Joyce" <davidjoyce@doctors.org.uk>
    Subject: Was Nothing new then now propeller twist
    Bob & Ralf, There is the consideration that the central portion of most props used on Europas will have a zero or negative angle of attack at speeds over 100kts, which can't help the cooling!. Most props I have looked at have a twist (taken as the difference between pitch at the tip and at 1/3 radius) of the order of 12 degrees. This is perfectly suited for a 1600mm prop doing 2300rpm at about 35 kts, but at 115 kts at 2000 rpm you need about 27 degrees twist to have every part of the propeller having the same angle of attack in a uniform air flow through the propeller disc. It's not likely that the tip will work too well at 27 degrees AOA, and if that is run at + 5 degrees then the inner bit will be at - 10 degrees! Props that I have looked at on Spitfires, Red Bull racers, etc & fast turboprops various all have twists up in the 25 deg range. It is interesting that the graph of twist needed for a given speed is not a straight line, but a rounded top curve, rather like the course of a projectile, so that for 1600mm prop, the figures I calculate are: Knots: 36 61 100 130 184 246 307 at 2300rpm Knots 31 54 88 113 164 214 267 at 2000rpm Degrees 12 17 23 27 30 31 29 Twist needed If you take the 2/3 radius point as having the ideal AOA then with a12 deg twist the tip would have a pitch angle of 6 degrees less and the 1/3 portion of 6 degrees more. That according to my calculations is what you need at 36 kts, making our current props ideal for the initial acceleration phase, but at130 kts, the twist is 15 degrees less than ideal. That is to say that if the 2/3 point is ideally pitched the tip will be 7.5 degrees over ideal (and possibly stalled) and the 1/3 portion 7.5 degrees under ideal pitch (and close to negative AOA). On the other hand a prop with say 23 degrees of twist would be ideal for 100kts but would be only about 5 degrees off perfect twist for 150 kts, and 6 degrees off perfect for60 kts.(with the AOA off-perfect for inner and outer portions by only half these figures - probably still comfortably in the working range for positive lift). The initial acceleration would of course suffer. Going back to the original point we could hope that cooling would be improved, as well as top speed and cruising fuel consumption. I should say that these calculations are my own, based on the angles needed to "screw" your way through a solid medium without slippage, and are therefore fallible!! I would be interested to hear comments from anyone with an insight in this area. Regards, David Joyce, G-XSDJ ----- Original Message ----- From: "R.C.Harrison" <ptag.dev@tiscali.co.uk> Sent: Tuesday, September 04, 2007 9:10 PM Subject: RE: RotaxEngines-List: Re: Nothing new then .......? At least the Jabiru can't boil ove


    Message 3


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    Time: 06:06:11 AM PST US
    Subject: Re: FS 02
    From: "rampil" <ira.rampil@gmail.com>
    Craig (craigb(at)onthenet.com.au): Is it really fair to say that you found redux broke down in your fuel, when the "fuel" you were using was entirely unrelated to the gasoline or gasoline/ ethanol mixtures that Europa drivers use. What type of engine uses methanol/acetone, a very low energy density fuel anyway? An RC model? -------- Ira N224XS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=132865#132865


    Message 4


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    Time: 06:58:36 AM PST US
    Subject: New Location for FLIGHT CRAFTERS
    From: rlaviation@aol.com
    Greetings to Everyone! Flight Crafters (Experimental and Kit Built Builder Assistance Center) has completed their move to a NEW location. We are still located adjacent to the Zephyrhills, Florida Municipal Airport (www.zephyrhills-airport.com), but we have moved to a new building. The address is:? 40417 Chancey Road? #102? Zephyrhills, Fl? 33542. Our phone numbers remain the same (813-779-1156 (telephone), 813-690-1916(Russell Lepre'), 813-695-1120 (Bob Berube),813-779-7582 FAX. Keep checking our website (www.flightcrafters.com) or (www.zenithdistributing.com) for pictures, maps, and our latest projects. Russell Lepre' / Bob Berube ________________________________________________________________________ Email and AIM finally together. You've gotta check out free AOL Mail! - http://mail.aol.com


    Message 5


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    Time: 10:15:34 AM PST US
    From: "Alan Burrows" <alan@kestrel-insurance.com>
    Subject: RE: Fuel Tank leak was it empty
    Hi Ron Yes my tank was emptied for the journey from UK to the U.S. in fact it was empty for a period of about 2 months! I wonder if its worth asking the community the same question about other tank leaks, because its certainly information that should be shared if it was the cause of my leak. Has anyone else got a similar story? Kind Regards Alan -----Original Message----- From: rparigor@suffolk.lib.ny.us [mailto:rparigor@suffolk.lib.ny.us] Sent: 20 August 2007 19:42 Subject: Fuel Tank leak was it empty Hello Alan Was your tank ever empty of fuel after fuel had once been in it? (perhaps you flushed tank with fuel during build and then after a while emptied?) Thinking by some is that will cause tank to shrink and can cuase cracking? Thx. Sincerely Ron Parigoris 09:05 22:36


    Message 6


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    Time: 11:44:29 AM PST US
    From: "Sidsel & Svein Johnsen" <sidsel.svein@oslo.online.no>
    Subject: Re: RE: Fuel Tank leak was it empty
    Ron, Alan, I flushed my tank with salt water (to fascilitate removing swarf after opening holes) and then with fuel before fitting the tank into the cockpit module. Left the fuel (full tank) in for abt one week to check if any pinhole leaks. Thereafter it was left empty/dry for about 3 1/2 years. I now have 35 hours flight time and 45 landings (none hard - yet!). No cracking of the tank, but it shows clear signs of bulging around the spacers on the inside of the seat backs, which is a bit worrying although I understand it is to be expected. Best regards, Svein LN-SKJ ----- Original Message ----- From: "Alan Burrows" <alan@kestrel-insurance.com> Sent: Wednesday, September 05, 2007 7:13 PM Subject: Europa-List: RE: Fuel Tank leak was it empty > <alan@kestrel-insurance.com> > > Hi Ron > > Yes my tank was emptied for the journey from UK to the U.S. in fact it was > empty for a period of about 2 months! > I wonder if its worth asking the community the same question about other > tank leaks, because its certainly information that should be shared if it > was the cause of my leak. > Has anyone else got a similar story? > Kind Regards > > Alan > > -----Original Message----- > From: rparigor@suffolk.lib.ny.us [mailto:rparigor@suffolk.lib.ny.us] > Sent: 20 August 2007 19:42 > To: Alan Burrows > Subject: Fuel Tank leak was it empty > > Hello Alan > > Was your tank ever empty of fuel after fuel had once been in it? (perhaps > you flushed tank with fuel during build and then after a while emptied?) > > Thinking by some is that will cause tank to shrink and can cuase cracking? > > Thx. > Sincerely > Ron Parigoris > > > 09:05 > > > 22:36 > > >


    Message 7


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    Time: 02:35:13 PM PST US
    From: Rowland & Wilma Carson <rowil@clara.net>
    Subject: Re: ICRA rant off topic
    At 2007-09-04 14:17 -0400 Fergus Kyle wrote: >Somehow, I have inherited an asinine program from ICRA > One of my sources (and an excellent one at that) is the UK Aircraft >Accident Investigation Board - a long-standing and valuable preventive >source. > When I seek out the bulletins, >aaib.dft.gov.uk/publications/bulletins/May_2007.cfm, for instance, I am then >presented with a choice of particular events, or a compendium of preliminary >remarks prior to formal investigation, when I opt for a specific report, >this stupid ICRA program cuts me out Fergus - I've never heard of ICRA and don't know what software they supply. I suggest you try browsing websites with a web browser. There are many available, including my favourite Safari, now (I understand) also available for those limited to applications that run under some flavour of Windows. I've had no problems using any part of the AAIB website with Safari. But I've not heard of anyone having problems with Internet Explorer either. If you are using Windows it should be available somewhere on the machine. regards Rowland -- | Rowland Carson PFA #16532 http://home.clara.net/rowil/aviation/ | 800 hours building Europa #435 G-ROWI e-mail <rowil@clara.net>


    Message 8


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    Time: 05:13:33 PM PST US
    From: "Rob Housman" <rob@hyperion-ef.com>
    Subject: ICRA rant off topic
    DO NOT ARCHIVE Ferg: If you are using IE check your settings at Tools, Internet Options, click on the Content tab, and then click on Enable or Disable (whichever is shown). If your filter is on (Disable will be shown)then you can simply turn it off. The bad news is that if you did not set up the filter yourself, or know who did, you may be out of luck because you will need the password to make changes. Note that if your filter is on, one of the problems may be that UKAAIB site may not have a "rating" and unrated sites will be blocked. To allow unrated sites (again in IE) continue as described in the first sentence above by clicking on Settings, then in the Content Advisor that opens next choose the General tab and put a check next to "Users can see websites that have no rating." Alternatively you can click on the Approved Sites tab and add the URLs, one by one, that you will allow past the filter whether they have a rating or not. All of this assumes that you know the password. More than you probably want to know about Microsoft's Content Advisor is at http://www.microsoft.com/technet/prodtechnol/ie/reskit/6/part2/c05ie6rk.mspx ?mfr=true You can get rid of the password by throwing money at the problem. For example http://f.lostpassword.com/ie.htm with which I have no experience so this is not a recommendation for a specific program. ...and don't blame the Brits because this nonsense probably was started by those divorced or gay "family values" politicians in Washington, DC. Say, Ferg, do you think Ottawa would consider making California a Province? Best regards, Rob Housman Irvine, California Europa XS Tri-Gear S/N A070 Airframe complete -----Original Message----- From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of Fergus Kyle Sent: Tuesday, September 04, 2007 11:17 AM Subject: Europa-List: ICRA rant off topic I realise this is off the topic - if not applicable to aviators and builders. Somehow, I have inherited an asinine program from ICRA. This outfit is based in UK - so you British-based readers are personally responsible......... It is my bounden duty to research and digest the causes of aircraft accidents. These provide the answer (usually) for one of two alternatives: (a) "there, but for the Grace of God, go I" - that is, I might have done the same - oh-oh (b) "that's not me" - the man was a fool, I wouldn't have done that (right or wrong) One of my sources (and an excellent one at that) is the UK Aircraft Accident Investigation Board - a long-standing and valuable preventive source. When I seek out the bulletins, aaib.dft.gov.uk/publications/bulletins/May_2007.cfm, for instance, I am then presented with a choice of particular events, or a compendium of preliminary remarks prior to formal investigation, when I opt for a specific report, this stupid ICRA program cuts me out - perhaps it's bad for my id. Id idn't. Ferg


    Message 9


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    Time: 05:16:05 PM PST US
    From: "Jack Hilditch" <wmjack1@t3cs.net>
    Subject: ICRA rant off topic
    It is a parental Internet content filter. Try uninstalling it by clicking the following: Start > Settings > Control Panel > Add/Remove Programs Uninstall the ICRAPlus Internet Filter (The actual program should be located in the C:\Program Files\ICRAplus\ICRAplus\ folder) Further information here: http://www.castlecops.com/o23list-1854.html http://www.icra.org/icraplus/ Regards, Jack Hilditch -----Original Message----- From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of Rowland & Wilma Carson Sent: Wednesday, September 05, 2007 3:23 PM Subject: Re: Europa-List: ICRA rant off topic At 2007-09-04 14:17 -0400 Fergus Kyle wrote: >Somehow, I have inherited an asinine program from ICRA > One of my sources (and an excellent one at that) is the UK Aircraft >Accident Investigation Board - a long-standing and valuable preventive >source. > When I seek out the bulletins, >aaib.dft.gov.uk/publications/bulletins/May_2007.cfm, for instance, I am then >presented with a choice of particular events, or a compendium of preliminary >remarks prior to formal investigation, when I opt for a specific report, >this stupid ICRA program cuts me out Fergus - I've never heard of ICRA and don't know what software they supply. I suggest you try browsing websites with a web browser. There are many available, including my favourite Safari, now (I understand) also available for those limited to applications that run under some flavour of Windows. I've had no problems using any part of the AAIB website with Safari. But I've not heard of anyone having problems with Internet Explorer either. If you are using Windows it should be available somewhere on the machine. regards Rowland -- | Rowland Carson PFA #16532 http://home.clara.net/rowil/aviation/ | 800 hours building Europa #435 G-ROWI e-mail <rowil@clara.net> -- PM




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