X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 18 [X] Return-Path: Received: from ms-smtp-02.southeast.rr.com ([24.25.9.101] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 1962669 for flyrotary@lancaironline.net; Mon, 02 Apr 2007 13:47:02 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.101; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-103-061.carolina.res.rr.com [24.74.103.61]) by ms-smtp-02.southeast.rr.com (8.13.6/8.13.6) with SMTP id l32HjuWI012869 for ; Mon, 2 Apr 2007 13:45:57 -0400 (EDT) Message-ID: <002301c7754e$eb28b180$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Engine Stress!!! Off Topic Date: Mon, 2 Apr 2007 13:47:01 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0020_01C7752D.63BC6E60" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0020_01C7752D.63BC6E60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Well, I don't think my heart could stand that kind of excitement. My = full throttle take off provides sufficient - thank you, Kelly. Must say = the stats are incredible - but I think the comparison of the 200 MPH = corvette really makes the case - WOW! Ed ----- Original Message -----=20 From: Kelly Troyer=20 To: Rotary motors in aircraft=20 Sent: Monday, April 02, 2007 1:06 PM Subject: [FlyRotary] Engine Stress!!! Off Topic And you thought our "Rotary" engines had a hot exhaust !!! Ever wonder just what makes a top fuel dragster go....=20 =20 FANTASTIC STATS.=20 ACCELERATION PUT INTO PERSPECTIVE=20 =20 =20 =20 * One Top Fuel dragster 500 cubic-inch Hemi engine makes more = horsepower than the first 4 rows at the Daytona 500.=20 =20 * Under full throttle, a dragster engine consumes 11.2 gallons of = nitro methane per second; a fully loaded 747 consumes jet fuel at the = same rate with 25% less energy being produced.=20 =20 * A stock Dodge Hemi V8 engine cannot produce enough power to = merely drive the dragster's supercharger.=20 =20 * With 3000 CFM of air being rammed in by the supercharger on = overdrive, the fuel mixture is compressed into a near-solid form before = ignition. Cylinders run on the verge of hydraulic lock at full throttle. = =20 * At the stoichiometric 1.7:1 air/fuel mixture for nitro methane = the flame front temperature measures 7050 degrees F.=20 =20 * Nitro methane burns yellow. The spectacular white flame seen = above the stacks at night is raw burning hydrogen, dissociated from = atmospheric water vapor by the searing exhaust gases.=20 =20 * Dual magnetos supply 44 amps to each spark plug. This is the = output of an arc welder in each cylinder.=20 =20 * Spark plug electrodes are totally consumed during a pass. After = 1/2 way, the engine is dieseling from compression plus the glow of = exhaust valves at 1400 degrees F. The engine can only be shut down by = cutting the fuel flow.=20 =20 * If spark momentarily fails early in the run, unburned nitro = builds up in the affected cylinders and then explodes with sufficient = force to blow cylinder heads off the block in pieces or split the block = in half.=20 =20 * Dragsters reach over 300 MPH before you have completed reading = this sentence.=20 =20 * In order to exceed 300 MPH in 4.5 seconds, dragsters must = accelerate an average of over 4 G's. In order to reach 200 MPH well = before half-track, the launch acceleration approaches 8 G's.=20 =20 * Top Fuel engines turn approximately 540 revolutions from light = to light!=20 =20 * Including the burnout, the engine must only survive 900 = revolutions under load.=20 =20 * The redline is actually quite high at 9500 RPM.=20 =20 * THE BOTTOM LINE: Assuming all the equipment is paid off, the = crew worked for free, & for once, NOTHING BLOWS UP, each run costs an = estimated $1,000 per second.=20 =20 * The current Top Fuel dragster elapsed time record is 4.441 = seconds for the quarter-mile (10/05/03, Tony Schumacher). The top speed = record is 333.00 MPH (533 km/h) as measured over the last 66' of the run = (09/28/03, Doug Kalitta).=20 =20 * Putting this all into perspective:=20 You are driving the average $140,000 Lingenfelter twin-turbo = powered Corvette Z06. Over a mile up the road, a Top Fuel dragster is = staged & ready to launch down a quarter-mile strip as you pass. You have = the advantage of a flying start. You run the 'Vette hard up through the = gears and blast across the starting line & pass the dragster at an = honest 200 MPH. The 'tree' goes green for both of you at that moment. = The dragster launches & starts after you. You keep your foot down hard, = but you hear an incredibly brutal whine that sears your eardrums & = within 3 seconds the dragster catches & passes you. He beats you to the = finish line, a quarter-mile away from where you just passed him. Think = about it - from a standi ng start, the dragster had spotted you 200 MPH = & not o nly caught, but nearly blasted you off the r oad when he passed = you within a mere 1320 foot long race!=20 =20 That's acceleration! -- Kelly Troyer=20 "Dyke Delta"_13B ROTARY Engine=20 "RWS"_RD1C/EC2/EM2=20 "Mistral"_Backplate/Oil Manifold=20 ------=_NextPart_000_0020_01C7752D.63BC6E60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Well, I don't think my heart could stand that = kind of=20 excitement.  My full throttle take off provides sufficient - thank = you,=20 Kelly.  Must say the stats are incredible - but I think the = comparison of=20 the 200 MPH corvette really makes the case - WOW!
 
Ed
----- Original Message -----
From:=20 Kelly = Troyer
Sent: Monday, April 02, 2007 = 1:06=20 PM
Subject: [FlyRotary] Engine = Stress!!! Off=20 Topic

 =20 And you thought our "Rotary" engines had a hot exhaust = !!!
 
 
Ever=20 wonder just what makes a top fuel dragster go....

 

FANTASTIC=20 STATS.

ACCELERATION=20 PUT INTO PERSPECTIVE

 

 

 

*=20 One Top Fuel dragster 500 cubic-inch Hemi engine makes more = horsepower=20 than the first 4 rows at the Daytona 500.

 

*=20 Under full throttle, a dragster engine consumes 11.2 gallons of = nitro=20 methane per second; a fully loaded 747 consumes jet fuel at the = same rate=20 with 25% less energy being produced.

 

* A=20 stock Dodge Hemi V8 engine cannot produce enough power to merely = drive the=20 dragster's supercharger.

 

*=20 With 3000 CFM of air being rammed in by the supercharger on = overdrive, the=20 fuel mixture is compressed into a near-solid form before ignition. = Cylinders run on the verge of hydraulic lock at full throttle.=20

 

* At=20 the stoichiometric 1.7:1 air/fuel mixture for nitro methane the = flame=20 front temperature measures 7050 degrees F.

 

*=20 Nitro methane burns yellow. The spectacular white flame seen above = the=20 stacks at night is raw burning hydrogen, dissociated from = atmospheric=20 water vapor by the searing exhaust gases.

 

*=20 Dual magnetos supply 44 amps to each spark plug. This is the = output of an=20 arc welder in each cylinder.

 

*=20 Spark plug electrodes are totally consumed during a pass. After = 1/2 way,=20 the engine is dieseling from compression plus the glow of exhaust = valves=20 at 1400 degrees F. The engine can only be shut down by cutting the = fuel=20 flow.

 

* If=20 spark momentarily fails early in the run, unburned nitro builds up = in the=20 affected cylinders and then explodes with sufficient force to blow = cylinder heads off the block in pieces or split the block in half. =

 

*=20 Dragsters reach over 300 MPH before you have completed reading = this=20 sentence.

 

* In=20 order to exceed 300 MPH in 4.5 seconds, dragsters must accelerate = an=20 average of over 4 G's. In order to reach 200 MPH well before = half-track,=20 the launch acceleration approaches 8 G's.

 

*=20 Top Fuel engines turn approximately 540 revolutions from light to = light!=20

 

*=20 Including the burnout, the engine must only survive 900 = revolutions under=20 load.

 

*=20 The redline is actually quite high at 9500 RPM. =

 

*=20 THE BOTTOM LINE: Assuming all the equipment is paid off, the crew = worked=20 for free, & for once, NOTHING BLOWS UP, each run costs an = estimated=20 $1,000 per second.

 

*=20 The current Top Fuel dragster elapsed time record is 4.441 seconds = for the=20 quarter-mile (10/05/03, Tony Schumacher). The top speed record is = 333.00=20 MPH (533 km/h) as measured over the last 66' of the run (09/28/03, = Doug=20 Kalitta).

 

*=20 Putting this all into perspective:

You=20 are driving the average $140,000 Lingenfelter twin-turbo powered = Corvette=20 Z06. Over a mile up the road, a Top Fuel dragster is staged & = ready to=20 launch down a quarter-mile strip as you pass. You have the = advantage of a=20 flying start. You run the 'Vette hard up through the gears and = blast=20 across the starting line & pass the dragster at an honest 200 = MPH. The=20 'tree' goes green for both of you at that moment.   The = dragster=20 launches & starts after you. You keep your foot down hard, but = you=20 hear an incredibly brutal whine that sears your eardrums & = within 3=20 seconds the dragster catches & passes you. He beats you to the = finish=20 line, a quarter-mile away from where you just passed him. Think = about it -=20 from a standi ng start, the dragster had spotted you 200 MPH & = not o=20 nly caught, but nearly blasted you off the r oad when he passed = you within=20 a mere 1320 foot long race!

 

That's=20 = acceleration!

--
Kelly Troyer
"Dyke = Delta"_13B=20 ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil = Manifold=20



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