Jun 23, 2011, 12:46 PM Ik heb het niet gedaan! I am certain any prospective investors will be well lubricated as well ...for their own comfort. The more savvy will not get to that point.
Jun 23, 2011, 02:19 PM
Registered User
Just right to RC...

Quote:
 Originally posted by monkeysandbearspants Having digested the content of the thread i conclude that the answer could be one of these !! However weight may be an issue and mostly certainly there would need to to be some boot modifications!

double bottom fo foam

large swimmer:

Regards Andrew
 Jun 23, 2011, 02:21 PM Scott I have the perfect plane for that engine, but I would need 2 of them. Oh well...
Jun 24, 2011, 05:36 AM
Registered User
Quote:
 Originally Posted by Pylonracr I have the perfect plane for that engine, but I would need 2 of them. Oh well...
Better Way:

Quote:
 Originally posted by Bill Sherwood The fans normally do about 4,000rpm maximum. On the RB211 engines the intermediate compressor section does about 7,000rpm and the high-pressure section does about 11,000rpm.
60 „cylinder” star half rotate engine parameters:
Diesel engine, sum 250-liter work volume, 4000 RPM,

20 000 KW, 170 g/KWh.--- 5,8 KW/ KG, full power: 3,5 Ton /h

250 L / 15 =16 liter work /4 cylinder x 2 = ~~ 32 liter full cylinder volume dimmer

long cylinder about 300 mm .(3 dcm), 32 / 3 = 10,5 dcm^2 S cylinder

10,5 / 3, 14 = 3,34 (r^2) r = sqrt 3,34 =1,8 dcm (180 mm) d cylinder = 360 mm

Sum D = 900 mm , long 1200 mm, d cylinder 360 mm
V all engine = 4,5 x 4,5 =20,25 x 3,14 =53,5 (S dcm) x 12 =642 dcm^3

All weight (aluminum) 642 liter –250 liter =392 liter x 3,5 KG =1372 KG ( 1,37 Ton max weight) ~ ~ ~ ~ 2 Tones weight. . And birds no afraid

Regards Andrew

P.s. If you need in left side next 60 cylinder

Service life air not have....
 Jun 24, 2011, 07:09 AM Registered User Quite a few yrs ago, I took a Saito 45 and modified it for more power. I figured, why not use the crankcase pressure as a supercharger. What I did was, make a rotary disc valve attached to the rear of the crankcase and attached the carb to the rear crankcase cover and driven by the rod journal. I cut slots around the bottom of the cyl. to act as transfer ports. I also rotated the intake valve so both valves become exhaust valves. Not hard to do as the lifters are pressed onto a brass sleeve. Runs fine but overheats as it's putting out more power and with no intake valve in the head, it doesn't get the normal cooling air through the intake. I would have to take pics if interested. Gord.
Jun 25, 2011, 07:02 AM
Registered User
Quote:
 Originally Posted by Pylonracr I have the perfect plane for that engine, but I would need 2 of them. Oh well...
Than you can build the engine of the garage at home. Even though these two would fit....

Star engines were characterized biggest always force density

Below picture of the star half rotate around 10 (40) with "cylinders". for the transparency of the picture one can see only 3 additional "cylinders" more than is at the animated film.
One can also see dimensions of the whole of the engine in the assumption that every cylinder has such dimensions for the picture half rotate with the set connecting rod of the Sulzer D= engine of 900 mm and stroke 2500 mm .

So 10 (40) "cylindrical" engine half rotate about the same working capacity in comparing to the Sulzer 10 engine cylindrical on the picture below .

Sulzer: 10 Cylinders 20 m long , 15 m hight , 1500 Ton weight

Half rotate star : 10(40) "Cylinders" 4,5 m diameter , 4,5 m long

And most importantly.. Since in the engine half rotate mass innertia are several times Sulzer smaller than in the engine, engine half rotate can work with the much greater rotation speed.
Slzer : 102 RPM 60 000 KW

Half rotate 250 RPM 150 000 KW

In same intake work volume .

Regards Andrew

Sure the engines of cars will be similar proportions
Jun 25, 2011, 11:08 AM
Ik heb het niet gedaan!
Quote:
 Originally Posted by Feliks Than you can build the engine of the garage at home.
Some could but not all can. Beware the guy who claims he makes a living from "performance engines" . They may need more than a little help with such things as metallurgy ,castings, machining ,bathing, tying shoelaces etc !
Jun 26, 2011, 03:50 PM
Registered User
Quote:
 Originally Posted by Gary Cee Some could but not all can. Beware the guy who claims he makes a living from "performance engines" . They may need more than a little help with such things as metallurgy ,castings, machining ,bathing, tying shoelaces etc !
Surely you have some reason... but, for example, " cylinders " you can make using the aluminum extrusion to willingness, without any treatment. Like the large heat sinks are made ​​to the transistors, or a large controlled rectifiers. Here, " a cylinder: Aug NO grinds...
That was enough to cut into the grace of aluminum stretched into smaller sections....
Well, maybe the crankshaft and connecting rods of steel desired to..
Well, some sealed ball bearings with grease...

Seals may be lubricated by diesel fuel only, because the lubrication is only necessary to lubricate ONLY the seals, and no need for lubrication of the piston to cylinder.
And stuff yet different, as the shoes..
But as a total would be able to file it in the garage, then you know how much money you could get for him?
With these parameters..
Andrew
Jun 26, 2011, 07:42 PM
Ik heb het niet gedaan!
Quote:
 Originally Posted by Feliks Surely you have some reason... but, for example, " cylinders " you can make using the aluminum extrusion to willingness, without any treatment. Like the large heat sinks are made ​​to the transistors, or a large controlled rectifiers. Here, " a cylinder: Aug NO grinds... That was enough to cut into the grace of aluminum stretched into smaller sections.... Well, maybe the crankshaft and connecting rods of steel desired to.. Well, some sealed ball bearings with grease... Seals may be lubricated by diesel fuel only, because the lubrication is only necessary to lubricate ONLY the seals, and no need for lubrication of the piston to cylinder. And stuff yet different, as the shoes.. But as a total would be able to file it in the garage, then you know how much money you could get for him? With these parameters.. Andrew
How much I could get for what ? A "Performance" engine guy that knows how to tie shoelaces ? Why they are rare as chicken lips !Yet totally worthless.

Make the seals from hardened carbon and the diesel fuel would probably provide plenty of lube.

Extrusions would be nice for production cylinders. However I would expect very low demand for these buggers. In that case you could easily wire EDM the cylinders . Wire EDM would suffice for many of the parts. Ball bearings are not real happy with the reciprocating motions , in fact plain journal bearings may do just fine. Probably Grade 3 unobtanium ?
The connecting rods could be fashioned from plain old 7075 aluminum alloy, if the "performance guys approve. In order to garner the favor of the "performance" minions you may consider Jet Chrome Steel for all shafting unless they care to substitute induction hardened metallic clay .
 Sep 20, 2011, 03:48 PM Registered User Thread OP Yes This EDM i nice solutions... But some news: Old ideas in new study: This gear drive in a helicopter that is bothering me. Another way to get rid of her. By the way, turned out that the rear propeller and also you can get rid of , because the helicopter does not have the torque of the main propeller. The helicopter had already been built. But it had drawbacks: no, for example, could not take full advantage of autorotation, because the propeller with a hole through the center did not have good aerodynamic properties.... http://en.wikipedia.org/wiki/Sud-Ouest_Djinn http://en.wikipedia.org/wiki/File:He..._and_blade.jpg I missed this problem and the propeller is as it is most optimal. Also today after assuming control of the helicopter adjustable nozzle (vectoring nozzle) on the outlet gases from the turbine driven, will be very precise. http://en.wikipedia.org/wiki/Turbomeca_Palouste http://upload.wikimedia.org/wikipedi...ne_of_F-35.jpg In summary the lack of a gear transmission and rear propeller helicopter will certainly reduce weight. Andrew
Sep 21, 2011, 05:12 PM
Registered User
Here PhotoStream proposal, which has improved aerodynamics and a little stiffness to the system add..

some histo:

 Fairey Rotodyne (4 min 19 sec)

http://www.new4stroke.com/percival.pdf

http://www.new4stroke.com/AIAA-Presentation.pdf

[quote]Originally posted by Chopper

Quote:
 Originally posted by Chopper Welcome back Andrew. One day it will fly :eureka
http://tipjet.com/tj_pho_gallry.htm

Andrew:
 Sep 22, 2011, 07:33 PM Registered User Thread OP If you do not want to lose a large diameter fan operating in the Venturi nozzle, you should use " internal Venturi nozzles ". These are just two cones inside a circular tube Their convergence must be in accordance with the Bernoulli's principle, just like a normal venturi nozzle. So must be kept laminar flow. But we gain a large diameter fan. Theoretically, the energy gain obtained is 10 times larger in relation to the windmill in a narrow place of the normal venturi nozzle.... Field cross-sections must be changed in the same function as in classical venturi Andrew
 Sep 28, 2011, 05:26 AM Registered User Thread OP Forged pistons And this looks like their production Andrew
 Sep 28, 2011, 07:59 PM Registered User Thread OP Heron's apache to drive propellers you may use electrically driven motors Motorjet. Then you can harness the power of their relatively high.. http://www.angelfire.com/art/jetengine/ https://www.rcgroups.com/forums/atta...hmentid=777461 Well if he gave such ichyba two engines to the Hero's apache model, it is even quite good size, it could be... https://www.rcgroups.com/forums/show...&pp=15&page=11 Regards Andrew
Sep 29, 2011, 06:01 PM
Registered User
Thanks to the new Heron's Apache we can build a pretty good quality helicopter

When we begin to design a small personal helicopter similar to this:
http://rotorfx.com/mosquito_experime...s_for_sale.htm
We see the need to drive to the main rotor diameter of 18 feet (5.5 meter)
We see the need to drive to the main rotor diameter of 18 feet (5.5 meter) and 540 rpm rotational speeds. To achieve such a speed we could use a torque 800 Nm ( ~ 80 kgm ).
Returning now to the Hero 's Apache, we can assume that the torque on the main propeller tubes produce more than us four propeller.
Let's say that in May they long 3.5 feet (1 meter ). So, as at the end of each of those tubes you put the engine that gives us a sequence of 10 N (2 Lbs) values ??(1kg) it will be added to the rotor torque of 10 Nm (1 kgm)
So four of these tubes with motors will give us a 40 Nm (4 kgm).
Now, assuming that our helicopter will be lighter with a big motor, gears and tail rotor, we can assume that he will need to drive only the main rotor diameter of 600 Nm at, say, 16 feet (4.9 m).
So if we placed the total at the end of the tube Heron's Apache silnki of values ??within 600/40 = 15
15 X 2 lbs = 30 lbs of force within, we get has fully functional helicopter....
As it turns out, these motors have already modelers....
http://www.wrenturbines.co.uk/media/...structions.pdf
Weight engines 8 Kg (14 Lbs)....
http://wn.com/jetkart 10 position video
If you want to build a crane helicopter, use these eight:
 Jet Kart !!! (1 min 32 sec)
:tsk
http://www.vortechinternational.com/review.html
http://www.jetcentral.com.mx/english/mammoth.html

Or a combination of hybrid electric..
 DIY EDF afterburner. (2 min 42 sec)

 Afterburner Design (3 min 0 sec)

https://www.rcgroups.com/forums/atta...hmentid=777461
Or Only electric: