[Aus-soaring] jets

Hi all, for those dreamers like myself, (how is your project, Mr Borgelt?) check out a jet powered ASW20, at http://www.australian-soaring-corowa.com/2005_2006/news.htm -sorry its all I could find on the owner or sailplane. Does anyone else have info on him/it? Cheerio, Wayne [EMAIL PROTECTED]

[Aus-soaring] Jets

Hi all, Ben said "The only problem that strikes me at the moment is how does one start the darn things? 1.I would guess you would have to punch VNE to get enough air through them to do a in flight start. 2.If started on the ground is a GPU Cart or HPCA Cart needed. >From my sketchy turb

[Aus-soaring] jets

Been flying jets over 20 years - real reliable ones been hearing about glider jets last 15 years or so - still haven't seen one! will not take to hacksaw for some time yet I reckon! for a serious comp pilot the weight loss on launch will restrict it to retrieve. __

Re: [Aus-soaring] Jets

Would the heat have any affect on the rear end of the glider??? Ash david lawley wrote: Hi all, Ben said "The only problem that strikes me at the moment is how does one start the darn things? 1.I would guess you would have to punch VNE to get enough air through them to do a in fli

RE: [Aus-soaring] Jets

Yes, but it isn't straightforward, which is why people keep refering to either thrust for jets and horses for props. It is probably easier to convert horsepower to thrust - but you will need a chart of your propeller efficiency. -Original Message- Anyone know the relationship between t

RE: [Aus-soaring] Jets

At 21:36 25/03/2007, you wrote: Yes, but it isn't straightforward, which is why people keep refering to either thrust for jets and horses for props. It is probably easier to convert horsepower to thrust - but you will need a chart of your propeller efficiency. -Original Message- Anyo

RE: [Aus-soaring] Jets

. Subject: RE: [Aus-soaring] Jets At 21:36 25/03/2007, you wrote: >Yes, but it isn't straightforward, which is why people keep refering to >either thrust for jets and horses for props. > >It is probably easier to convert horsepower to thrust - but you will >need a chart of your

RE: [Aus-soaring] Jets

--- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Mike Cleaver Sent: Sunday, 25 March 2007 23:02 To: [EMAIL PROTECTED]; Discussion of issues relating to Soaring in Australia. Subject: RE: [Aus-soaring] Jets At 21:36 25/03/2007, you wrote: >Yes, but it isn't straightforward, w

RE: [Aus-soaring] Jets

Behalf Of Anthony Smith Sent: Monday, 26 March 2007 7:50 AM To: 'Mike Cleaver'; 'Discussion of issues relating to Soaring in Australia.' Subject: RE: [Aus-soaring] Jets Actual Thrust = prop efficiency x power / speed. Working out the prop efficiency is the interesting bit. -

Re: [Aus-soaring] Jets

27;Discussion of issues relating to Soaring in Australia.'" Sent: Monday, March 26, 2007 8:52 AM Subject: RE: [Aus-soaring] Jets Hi all, Let me rephrase the question, what is the conversion for thrust to horsepower assuming 0 airspeed, idea being what acceleration a jet powered

RE: [Aus-soaring] Jets

At 08:52 AM 26/03/2007, you wrote: Hi all, Let me rephrase the question, what is the conversion for thrust to horsepower assuming 0 airspeed, idea being what acceleration a jet powered glider will have from a standing start, ie takeoff? Regards Dave Acceleration is force/mass The accelerati

Re: [Aus-soaring] Jets

Peter Creswick wrote: A good "rule of thumb" for take off calculations is (0.7 x static thrust) / AUW, which gives acceleration in "g" (which is a very small figure) The 0.7 is to average thrust during the ground roll, since increasing ram drag reduces net thrust with increasing speed, making

Re: [Aus-soaring] Jets

Allan Armistead wrote: Geez, I haven't seen the old "slugs" quoted for one hell of a long time. Does this mean good old "Christian" units are making a comeback? Are we going to start quantifying our outlanding paddocks in Roods, Poles and Perches? I had better dig out my old survey chain... Go

Re: [Aus-soaring] Jets

At 10:10 AM 26/03/2007, you wrote: The kicker is the static thrust - which is modified by the Froude efficiency. Basically, this is the ratio between the speed of the aircraft divided by the speed of the gas leaving the jet engine nozzle. So when the glider is stationary, the Froude efficiency

RE: [Aus-soaring] Jets

relating to Soaring in Australia. > Subject: Re: [Aus-soaring] Jets > > > At 10:10 AM 26/03/2007, you wrote: > >The kicker is the static thrust - which is modified by the Froude > >efficiency. Basically, this is the ratio between the speed of the > >aircraft d

RE: [Aus-soaring] Jets

: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Sent: Monday, 26 > March 2007 9:36 AM To: David Lawley > Subject: RE: [Aus-soaring] Jets > > For a prop aircraft: > > Thrust available = prop efficiency x power / speed. > > which so far doesn't make a lot of sens

Re: [Aus-soaring] Jets

Mike Borgelt wrote: Two engines have lots of advantages when you think about it for a while. Certainly - but they also have their downsides - increased complexity of controls, fuel runs etc. I am not too much worried about an engine failure in a jet powered glider as it will present only one ad

Re: [Aus-soaring] Jets

Derek Ruddock wrote: So I guess you won't be going the turboprop route then... http://microjeteng.com/prop.html The current self launch options are bad not because of the engine but because of the huge drag penalty of that unpowered prop prestart. The huge advantage of jet is that they cost

Re: [Aus-soaring] Jets

At 12:39 PM 26/03/2007, you wrote: I have heard (but cannot point at a source) that small turbofans are being developed with a single shaft and turbine. Doesn't sound right to me. The turbofan design I've seen had an aft fan driven by its own free turbine just like the Whittle patent. The s

Re: [Aus-soaring] jets

At 10:53 PM 24/06/2009, you wrote: Been flying jets over 20 years - real reliable ones been hearing about glider jets last 15 years or so - still haven't seen one! will not take to hacksaw for some time yet I reckon! for a serious comp pilot the weight loss on launch will restrict it to retriev

Re: [Aus-soaring] jets

launching jets I will have to wait until I see yours! Stats on the Schempp 2cxa sustainer are a joke, the rate of climb and fuel usage of yours will have to be better than theirs! Best of luck, Tom --- On Thu, 25/6/09, Mike Borgelt wrote: From: Mike Borgelt Subject: Re: [Aus-soaring] jets To

Re: [Aus-soaring] jets

luck, Tom --- On Thu, 25/6/09, Mike Borgelt wrote: From: Mike Borgelt Subject: Re: [Aus-soaring] jets To: "Discussion of issues relating to Soaring in Australia." Received: Thursday, 25 June, 2009, 9:21 AM At 10:53 PM 24/06/2009, you wrote: > Been flying jets over 20 years - re

Re: [Aus-soaring] jets

ke Borgelt Subject: Re: [Aus-soaring] jets To: "Discussion of issues relating to Soaring in Australia." > Received: Thursday, 25 June, 2009, 9:21 AM At 10:53 PM 24/06/2009, you wrote: > Been flying jets over 20 years - real reliable ones > been hearing about glider jets last 15

Re: [Aus-soaring] jets

jet at the next state comps mike? Regards, Tom                                  --- On Sat, 27/6/09, Mike Borgelt wrote: From: Mike Borgelt Subject: Re: [Aus-soaring] jets To: "Discussion of issues relating to Soaring in Australia." Received: Saturday, 27 June, 2009, 9:18 AM At

Re: [Aus-soaring] jets

: [Aus-soaring] jets "This is the engine in the 2cxa sustainer so obviously somebody thinks this is a good idea and has adequate performace." >From Schempp website: 1: size restraint reason for jet 2 : 2 strokes still for

Re: [Aus-soaring] jets

At 04:15 PM 20/07/2009, you wrote: Tom, Another factor the germans must deal with is noise, the turbine they are using is choked to keep it within Db levels. wait for FADEC, should fix it somewhat. Cheers Mark The Draline sustainer turbine used in the Ventus 2Cxa has the full 230 Newtons

Re: [Aus-soaring] jets

static thrust but >> since I have not seen one and there are NO production self launching jets I >> will have to wait until I see yours! >> Stats on the Schempp 2cxa sustainer are a joke, the rate of climb and fuel >> usage of yours will have to be better than their

Re: [Aus-soaring] jets

At 07:06 PM 20/07/2009, you wrote: Mike Recently had a look at Richard Reiser Jet Caproni which is in a trailer near Mullumbimby. Actually is is in reasonable condition considering no use for prob 15+ years. I am sure the estate would want to sell same off is somebody wants a project. Think

Re: [Aus-soaring]Jets

Check this out: http://www.yves-rossy.com/en/jetman.php Simple, reliable jet self launch is not that far away if this can be done while falling out of an aircraft. Mike Borgelt Instruments - manufacturers of quality soaring instruments phone Int'l + 61 746 355784 fax Int'l + 61 746 358796 cellp

RE: [Aus-soaring]Jets

Good on him. What a pioneer! Those exhaust pipes would get hot! He is a flying bomb! (But I guess any powered aircraft with fuel on board is) ___ Aus-soaring mailing list [EMAIL PROTECTED] To check or change subscription details, visit: http://lists.i

[Aus-soaring] `jets man, jets

GO mike, GO! Estimated deployment time in FT or MINS? Wayne Carter ___ Aus-soaring mailing list Aus-soaring@lists.internode.on.net To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring

[Aus-soaring] Jets- reply to Robert

Robert, have you heard of any of these high bypass jets being developed for models and UAV's etc? Will be interesting to see how Mikes combo goes, I would prefer a single engine solution though. Great to see some meaningful discussion where you get to learn something! Nig Peter Creswick wrote:

Re: [Aus-soaring] Jets- reply to Robert

There are quite a number of low bypass and mid bypass ratio turbo fans around. Unfortunately they are only one use engines designed for cruise missles. It isn't too much of a step to take the engine and redesign it for multiple use. > Robert, have you heard of any of these high bypass jets > b

Re: [Aus-soaring] Jets- reply to Robert

At 11:24 AM 26/03/2007, you wrote: There are quite a number of low bypass and mid bypass ratio turbo fans around. Unfortunately they are only one use engines designed for cruise missles. It isn't too much of a step to take the engine and redesign it for multiple use. Even assuming you could

RE: [Aus-soaring] Jets- reply to Robert

elating to Soaring in Australia. > Subject: Re: [Aus-soaring] Jets- reply to Robert > > > At 11:24 AM 26/03/2007, you wrote: > >There are quite a number of low bypass and mid bypass ratio > turbo fans > >around. Unfortunately they are only one use engines designed for &g

Re: [Aus-soaring] Jets- reply to Robert

nandrews wrote: Robert, have you heard of any of these high bypass jets being developed for models and UAV's etc? Will be interesting to see how Mikes combo goes, I would prefer a single engine solution though. My 'info' is that the US military are demanding a turbofan option, but there is quite

RE: [Aus-soaring] Jets- reply to Robert

At 12:27 PM 26/03/2007, you wrote: So what is the cost of the engines you are considering Mike? You can get an idea of engine cost from looking at the model jet manufacturers websites. Engine cost is only one factor in installation cost though. Mike Borgelt Instruments - manufacturers o

[Aus-soaring] jets are such an old hat

..400hp - a bit much for a glider - but how about a 100hp version

Re: [Aus-soaring] jets are such an old hat

It's a jet engine with a complex combustor system. Mike At 12:20 PM 27/05/2014, you wrote:

Re: [Aus-soaring] jets are such an old hat

..sure 1.5 litre three-cylinder turbo engine with a crank shaft and cam shaft and valves just to slow things down and add to the amount of moving parts? :-) Erich On Tue, May 27, 2014 at 4:31 PM, Mike Borgelt < mborg...@borgeltinstruments.com> wrote: > It's a jet engine with a complex combustor

Re: [Aus-soaring] jets are such an old hat

..it's actually very closely related to a horse! https://www.youtube.com/watch?v=xBUVl41A3dY&t=61 On Tue, May 27, 2014 at 4:41 PM, Erich Wittstock wrote: > ..sure > 1.5 litre three-cylinder turbo engine > with a crank shaft and cam shaft and valves just to slow things down and > add to the amou

RE: [Aus-soaring] Jets - does this count towards Gas Turbine Time?

PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Peter Creswick Sent: Monday, 26 March 2007 9:03 AM To: Discussion of issues relating to Soaring in Australia. Subject: Re: [Aus-soaring] Jets A good "rule of thumb" for take off calculations is (0.7 x static thrust) / AUW, which gives accel