---------------------------------------------------------- TeamGrumman-List Digest Archive --- Total Messages Posted Mon 12/01/03: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:24 PM - Acceleration (Aucountry@aol.com) 2. 06:25 PM - AA5x stats (Aucountry@aol.com) 3. 06:32 PM - Re: Acceleration (Steven Jackson) 4. 11:15 PM - Soliciting contributions (Aucountry@aol.com) 5. 11:19 PM - Re: Soliciting contributions (Cory Emberson) ________________________________ Message 1 _____________________________________ Time: 06:24:48 PM PST US From: Aucountry@aol.com Subject: TeamGrumman-List: Acceleration --> TeamGrumman-List message posted by: Aucountry@aol.com First, some useful info: One Top Fuel dragster with a 500 cubic inch Hemi engine, makes more horsepower than the first 4 rows at the Daytona 500. (on the order of 4000+ horsepower) Under full throttle, a dragster engine consumes 1 1/2 gallons of nitro methane per second; a fully loaded 747 consumes jet fuel at the same rate with 25% less energy being produced. A stock Dodge Hemi V8 engine cannot produce enough power to drive the supercharger on the dragster. 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. At the stoichiometric 1.7:1 air/fuel mixture for nitro methane the flame front temperature measures 7050 degrees F. 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. Dual magnetos supply 44 amps to each spark plug. This is the output of an arc welder in each cylinder. 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. If spark momentarily fails early in the run, unburned nitro builds up in the affected cylinders and then explodes with sufficient=20force to blow cylinder heads off the block in pieces or split the block in half. =20 In order to exceed 300 mph in 4.5 seconds dragsters must accelerate at an average of over 4G's. In order to reach 200 mph well before half-track, the launch acceleration approaches 8G's . Dragsters reach over 300 miles per hour before you have completed reading this sentence. Top Fuel Engines turn approximately 540 revolutions from light to light! Including the burnout the engine must only survive 900 revolutions under load. The red-line is actually quite high at 9500 rpm. The Bottom Line; Assuming all the equipment is paid off, the crew worked for free, and for once NOTHING BLOWS UP, each run costs an estimated US $1,000.00 per second. 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). Note: When I was a kid of 12, I read about Connie Kalitta, Doug=E2=80=99s father, being the first to break the 6 second barrier.) Putting all of this into perspective: 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 and 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 and past the dragster at an honest 200 mph. The 'tree' goes green for both of you at that moment. The dragster launches and starts after you. You keep your foot down hard, but you hear an incredibly brutal whine that sears your eardrums and within 3 seconds the dragster catches and passes you. He beats you to the finish line, a quarter mile away from where you just passed him. Think about it, from a standing start, the dragster had spotted you 200 mph and not only caught, but nearly blasted you off the road when he passed you within a mere 1320 foot long race course. That, folks, is acceleration. ________________________________ Message 2 _____________________________________ Time: 06:25:01 PM PST US From: Aucountry@aol.com Subject: TeamGrumman-List: AA5x stats --> TeamGrumman-List message posted by: Aucountry@aol.com Here is the info I have for the AA5B taken off an old American Av 1974 dwg.(accuracy ?): Main wing NACA 64,415 (modified) Area (inc fus.) 140.12 sqft Flap Area 12.14 sqft deflection +0deg, -45deg Aileron Area (inc tabs) 11.82 sqft wing incidence 3.5 deg wing dihederal 5 deg wing twist angle 0deg wing taper ratio 1 aspect ratio 7.1 Horizontal Tail airfoil NACA 66,-012 Stabilizer area 17 sqft Elevator Area(inc tabs) 15.41 sqft Tab area 3.02 sqft Horiz. tail incidence 0 deg Horiz. tail dihedral 0 deg Horiz tail twist 0 deg Horiz Tail taper ratio 1 Elevator Travel 23deg up 17deg down Tab travel 14deg up 30deg down Vertical Tail Airfoil NACA 65,-012 (modified) Vert fin area 7.02 sqft Rudder Area 4.8 sqft (inc tab) Vert tail offset angle 0deg Vert Tail sweep angle 13deg 40 min 17 sec (@ 25% cord line) Vert tail taper ratio .45 Rudder travel +/- 25deg Total aircraft length=264" width= 378.42" vert @tail = 91" with beacon ________________________________ Message 3 _____________________________________ Time: 06:32:07 PM PST US From: "Steven Jackson" Subject: RE: TeamGrumman-List: Acceleration --> TeamGrumman-List message posted by: "Steven Jackson" Now, if only I could figure out a way to get it under the cowl... ________________________________ Message 4 _____________________________________ Time: 11:15:01 PM PST US From: Aucountry@aol.com Subject: TeamGrumman-List: Soliciting contributions --> TeamGrumman-List message posted by: Aucountry@aol.com I was going through my mail today and guess what. Both the EAA and AOPA were soliciting contributions. As I was throwing them away, I thought of the brouhaha that began when Matt sent out a solicitation to help fund the bulletin board lists he maintains. I also receive, as do most of you, requests for money from the Republican National Committee (anyone know if the Dems ask for money too?), the IRS, the University from which I graduated, ASME, AIAA, Red Cross, Salvation Army, and, hell the list goes on. I used to get requests from US English but they quit asking for money; not sure why. Maybe they gave up trying to make Enginsh the official language of the US. Anyway. So, Ron, do you boycott all organizations that ask you for donations? Just wondering. Gary ________________________________ Message 5 _____________________________________ Time: 11:19:54 PM PST US From: "Cory Emberson" Subject: Re: TeamGrumman-List: Soliciting contributions --> TeamGrumman-List message posted by: "Cory Emberson" Hi Gary, I know for a fact that the DNC aggressively solicits donations ... no way they'd be left out of the loop. I was not aware that the letters from the IRS were only requests... :-) And if I only had an old car to donate to every organization that advertised for them ... the IRS would owe me a LOT of money! best, Cory ----- Original Message ----- From: Subject: TeamGrumman-List: Soliciting contributions > --> TeamGrumman-List message posted by: Aucountry@aol.com > > I was going through my mail today and guess what. Both the EAA and AOPA > were soliciting contributions. As I was throwing them away, I thought of the > brouhaha that began when Matt sent out a solicitation to help fund the bulletin > board lists he maintains. > > I also receive, as do most of you, requests for money from the Republican > National Committee (anyone know if the Dems ask for money too?), the IRS, the > University from which I graduated, ASME, AIAA, Red Cross, Salvation Army, and, > hell the list goes on. I used to get requests from US English but they quit > asking for money; not sure why. Maybe they gave up trying to make Enginsh the > official language of the US. Anyway. > > So, Ron, do you boycott all organizations that ask you for donations? > > Just wondering. > > Gary > >