Higher pressure increases the mass of air drawn into the cylinders by the pumping action of the pistons during each intake stroke. First, the pros. If so, which ones? It was naturally aspirated with 10:1 pistons and then-current avionics. approved for Cessna 182 E thru R models and Cirrus SR22. But if exhaust-driven forced induction is aviation’s norm, crankshaft-driven supercharging has quietly made inroads on Experimentals lately. Today he still writes for peanuts and flies for fun. Mainly this is because the EFI fuel lines run to the stock Lycoming ports, and the ignition coils are located outside the cooling baffles. There are tens of thousands of homebuilt aircraft in the U.S. that have been certified by the FAA as Experimental, signifying they’re suitable for recreational use. Bill and Ralph’s first upgrade was to fuel capacity. Others available. Print Email. Of those, Ralph Inkster has become the major rocketeer, with his thinking and handiwork throughout the machine. That’s 22 hours driving, because Ralph did it!” Bill’s also running rich of peak so far, leaving lean-of-peak operation for later, after the fuel/air/spark tuning is more complete. If the supercharger is off-the-shelf, the installation is 100% custom by Bill and Ralph. All rights reserved worldwide. Performance is significantly enhanced with retractable gear and more power. I can cruise at 11,000 or 12,000 feet; I typically don’t go higher. But the extension yields needed blower and cowling streamlining real estate, so the effort pays off. Also obviously hand-crafted, first-generation stuff is the inlet tubing. Bill’s system thus automatically begins flowing at 28 inches, then linearly ramps up the water pressure until maximum flow is reached at 38 inches. As you’d guess from the qualifying speed, there was also a boost increase for 2016. The new impeller should yield more boost, or at least be more efficient, at race speeds. Like all Rockets, Bill’s sports wings shortened by one rib compared to its RV-4 starting point. We are also an MT propeller distributor. We are also an MT propeller distributor. To please Canadian bureaucrats—who, like our own, seem happy to let you have a supercharger as long as you don’t use it (much)—boost was initially limited to 33-34 inches in 2015, making the Rocket little more than supernormalized. Kitplanes.com and the Kitplanes logo are protected properties under international copyright law. XF4U-4: ... Supercharger was simplified for low altitude operation. With the Vortech blower, Bill now sees 26 to 27 inches at the same altitude and the same 2300 engine rpm, so he’s lightly boosted while cruising; call it 4 pounds. Superchargers for Cessna, Cirrus, Diamond and Homebuilt Aircraft. The system is activated by rising manifold pressure; there is no manual backup. For example, our test Cirrus was fastest at 8000' in a cruise setting prior to the supercharger. Forced Aeromotive Technologies7161 South. That it can thump out far over 400 hp to the propeller backs up the posture. How about belt-driven superchargers-- do any aircraft have them? Because EFI meters the fuel at the injectors, the fuel rail is simply a common point to distribute fuel from. First produced in 1952 and used in Korea, and retired in 1957. Sh 14 – 7-cylinder air-cooled radial Payments up to 15 years.Finance your engine overhaul and supercharger at the same time.Contact rod(at)forcedaeromotive.com for more information. Unexpectedly, and likely the greatest time consumer in Bill’s engine program, has been re-fabricating the cowling and cooling plenum to accommodate the Sabre prop extension. Their electronic fuel injection and ignition is perhaps more well known in the U.S. as the basis of the fuel and spark offerings from EFII. I lost efficiency with the lower compression [And driving the supercharger].”. Instead we hope to report on his engine-tuning success as he works toward his ultimate goal of single-power-lever engine management. “This airplane I race one week a year. Experimental Aircraft: Also known as home- or amateur built aircraft and constructed by people for whom it is not a professional activity. For over 100 years, this family-owned business has sold everything from pipe organs and PT-19 wings to high-performance parts for homebuilts. Bill reported blower exit air as 210 F dry, falling to 100-110 F with the ADI flowing. Bill’s fuel plumbing employs a return-style layout as evidenced by the large inlet and return lines threaded into the black fuel rail. This is 240 knots [276 mph] published on this airplane. the RC 2-75 Y1. As expected, developing the supercharger is an ongoing, multi-year journey. Bill’s fitment was the first SDS system to fit the electronic fuel injectors in the tappings normally housing Bendix fuel injectors, so his fuel is certainly shot closer to, and perhaps even through, the open intake valve and its seat than the more commonly seen intake runner mountings. This site uses Akismet to reduce spam. In the meantime, his is a Harmon that really does rocket. I have done power-on descents at 310 mph doing flutter testing. Only two built. To date initial ignition timing remains at 24 degrees BTDC; the SDS computer is tuned to retard spark 1 degree for every 3-inch rise in manifold pressure over ambient. Both Lycomings are boosted via Vortech centrifugal superchargers, giving us the chance to examine both 6- and 4-cylinder applications. Also typical, Bill says he could save fuel during cruise by simply closing the throttle a little. It has no pressure or metering functions. The Allison V-1710 aircraft engine designed and produced by the Allison Engine Company was the only US-developed V-12 liquid-cooled engine to see service during World War II.Versions with a turbocharger gave excellent performance at high altitude in the twin-engined Lockheed P-38 Lightning, and turbo-superchargers were fitted to experimental single-engined fighters with similar results. The propeller is a two-blade Hartzell blended airfoil with F8068DX blades. Just as naturally, in the pre-Reno rush in 2016, Bill didn’t have the time to custom map his fuel/spark/ADI combination, nor was a suitable map available from others, so the majority of the tedious, time-intensive computer mapping still awaits. The full potential of the supercharger should be realized from 12000' to mid teens. In general, to get the brake horse- Cylinder head temps also fall with the ADI, typically 30 to 50 F. In fact, Bill used spray bar water on the exterior of the cylinders in 2015, but higher ADI flows do the job by themselves, so he no longer sprays externally. No down payment required. The block-off plate jutting up and forward denotes where the first, inadequately small blower bypass valve was located. Originally a 6-rib belt drive was used, but it proved inadequate on the 540 and was passed along to Dan West, along with the first-generation mounting brackets. Feel free to consider homebuilt aircraft, experimental aircraft, lightsport aircraft, and automotive conversion engines in your answer. Bill claims he’s personally shed a few pounds, too. Recidivist hot rodders will recognize the supercharger as the popular, durable Vortech V1 centrifugal. By last September, Bill had moved up to 38-40 inches at 2700 rpm at Reno where the density altitude hovers around 8000 feet. Fuel pressure is set at approximately 50 psi in the fuel rails. Passion for Aviation. They, in turn, necessitated custom-length pushrods from Smith Brothers. The alternator pulley is also large diameter to maintain correct alternator rpm when driven by the oversized crankshaft pulley. Forced Aeromotive has invested over 20 years in engineering and certification in what may be the best new General Aviation performance product to come along in years.FAT envisioned and built a durable alternative to high maintenance turbocharger systems. It’s a robust airframe and a good build [but] there is a limit to the top end of the airframe. The Supercharger: Pros And Cons. Working with Aero Sport Power in Kamloops, British Columbia, goal one was durability under boost, so a fresh set of lightened Ly-Con NFS 8:1 pistons went in, along with a blower-specific Ly-Con camshaft. The exhaust-driven supercharger, or turbocharger, seems to offer something for nothing, utilizing otherwise wasted heat energy from the engine’s exhaust to drive the supercharger, instead of the power-consuming geared method. This one isn’t going to go any faster; it’s at its limit. Gary had opted for “the short 42 gallon fuel tanks, and Ralph helped me build an auxiliary 14-gallon tank in the luggage compartment,” notes Bill. Hand-ported Lycoming cylinders were prepared and reinforced with Sky Dynamics cylinder girdles. In 2014 Bill ran the Rocket at Reno normalized (29 inches Hg) with the first-generation setup, qualifying at 264 mph. Engine management fell to another Canadian outfit, Ross Farnham’s Simple Digital Systems (SDS). Besides Ly-Con’s funny cam, stock lifters with DLC coating were installed to work with the 1.4:1 high-lift rocker arms Bill already had. Click for Details. The XP-67 was the very first McDonnell Aircraft Company prototype. Thomas’ installation can be seen at www.g3ignition.com. We’ll also note Bill’s and Dan’s blower installations are custom fitments and have no connection with Thomas’ work or Forced Aeromotive Technologies, which has also offered Vortech-based Lycoming and Continental kits for some years. The supernormalizer system gives the 5000'-7000' of extra performance every airplane needs without the high maintenance costs of a heat producing turbocharger. Yes, they take a hit in fuel economy, but at lightly boosted manifold pressures it’s not much of a loss in the real world, especially when performance is key. Bureaucrats aside, there were multiple excellent reasons for Bill to sneak up on the boost, not the least is that 8000-foot density altitude at Reno in September. Our patented aircraft supercharger systems are F.A.A. See more ideas about experimental aircraft, p 47 thunderbolt, fighter jets. Its an age-old duality: stability versus maneuverability. ... but “Y” was typically used for pre-production aircraft, while “X” was for experimental aircraft. Such low boost is key to the supercharger’s simpler, charge-cooler-less layout. The aircraft in this list include prototype versions of aircraft used by the German Luftwaffe during World War II and unfinished wartime experimental programmes. But what about VNE? Most of the visual action is viewed looking up at the bottom of Bill’s engine. Basically an A6M2. Bill logged about 850 hours in it, flying all over North America. We have a variety of experimental aircraft available from private owners and dealers that will provide you with a unique flying experience. Welcome to this resource for owners of the experimental, homebuilt class of aircraft and for pilots of other general aviation and recreational flying machines. Read More. The “official” engine choice for the E/A-B version is a turbocharged 115-hp Rotax 914 UL. You have entered an incorrect email address! The internal supercharger is built into the airplane engine and is called a geared supercharger. Oct 4, 2019 - Explore Curtis Beck's board "warbird prototypes/ experimental" on Pinterest. He notes great vertical performance from his Acroduster, and with several years’ experience with his Eaton TVS supercharger, Thomas reports great reliability. The supercharger’s 10 in (254 mm) diameter impeller was driven at 6.55 times crankshaft speed. At the 2016 Reno Air Races when we saw it, the plane weighed 1320 pounds. With the additional air, “What other airplane can you fly at 240 knots and land at 50 knots? Turbochargers were used on several aircraft engines during World War II, beginning with the Boeing B-17 Flying Fortress in 1938, which used turbochargers produced by General Electric. Bill echoes what we’ve heard from other racers: Correct ADI flow is typically 20 to 25% of fuel flow, so one should initially jet the ADI system accordingly and fine tune from there empirically. Bill repurposed an automotive throttle body to achieve a sufficiently large boost bypass valve; the SCAT tubing ducts the bypass air aft to better direct it out the cowling exit. The take-off by heavily loaded aircraft, the quicker rate of climb, and high altitude performance can be achieved to the same extent by supercharging. Peoria #18ECentennial AirportEnglewood, CO 80112sales(at)forcedaeromotive.comTelephone: (720) 348-0622Fax: (303) 799-6443SW US call Boyd GallaherTelephone: (928) 713-9355, Kevin Seppanen3 Cardier RoadWangan 4871Queensland AustraliaMobile: 0438578529, International 61 (0) 438578529kseppanen(at)bigpond.com, Vincent HaubourgFL140 Parachutisme Rhone Alpes6 Rue Racine38500 VoironFranceTelephone: 0033623268322 or 0033651158622info(at)fl140.fr. Because turbocharging, efficient as it is, brings heat and plumbing headaches many judge not worth the trouble in low- to mid-altitude aircraft. Thomas Shpakow’s gorgeous Acroduster Too features a blown 540, a useful device when flying from Thomas’ Denver, Colorado, home base. If you’ve flown a plane that puts the manifold pressure gauge over 30 inches, chances are excellent it was turbocharged. Experimental aircraft built to hold different engines in order to test Corsair's performance with other engines. Of course, with electronic engine management, the fuel, ADI flows, and ignition timing can be adjusted—it’s the whole point of running an electronic system such as the SDS. Two custom applications we just got a good look at were Bill Beaton’s 540-inch Harmon Rocket and Dan West’s parallel-valve IO-390-motivated RV-6. And that’s a real shame! Shown in race trim on the Reno ramp, the back seat is consumed with removable ADI tanks. His system is from Devil’s Own, which offers bosses for AN fittings and gallon-per-hour rated nozzles, along with quality Teflon-lined hoses, robust pumps, and a progressive electronic controller. Bill also went through the engine completely when opting to supercharge it, as the existing 10:1 powerplant was optimized for natural aspiration. favorite this post Dec 6 Hardigg air cargo pressurized rolling case $200 (DRIFTWOOD, TX 78619) hide this posting restore restore this posting. Experimental/Homebuilt Aircraft For Sale 1 - 25 of 65 Listings. Specialized instruments for ADI, engine tuning, etc. Of course, there’s been weight creep since, so Bill’s currently chasing ounces where he can. One tactic not yet possible with Bill’s installation is to run closed-loop fuel and spark strategies (where the computer constantly fine-tunes the fuel/spark using input from rpm, manifold pressure, knock sensors, and exhaust oxygen content sensors); but it’s a goal for future development. The power required to drive the geared supercharger is taken, through a train of gears, from the engine crankshaft. Our directory also includes homebuilt aircraft, many of them built from popular aircraft kits. See more ideas about Experimental aircraft, Military aircraft, Fighter jets. G3i developed the first magneto interfaced-based electronic aircraft ignition control system that interfaces with most Slick & Bendix aircraft magnetos for Lycoming and Continental aircraft engines. That’s nicely within the time-proven Vortech’s rpm limits, thus keeping the blower near the sweet spot of its efficiency range—about 77% efficient. Others available. Because inlet air temperature is so low, no charge cooling or ADI is needed. Jan 12, 2019 - Explore Hal Cohen's board "XP-72 Superbolt", followed by 941 people on Pinterest. If this place was an airport…a guide to airport personalities. The idea of the turbocharger is to improve over a naturally aspirated engine's power output, due to the fact that the compressor can force more air—and proportionately more fuel—into the combustion chamber than atmospheric pressure (and for that matter, ram air intakes) alone. I can go somewhere.’ I do burn more fuel—around 16 or 17 gph. Here the supercharger is just out of frame to the right, the throttle body is gold anodized at bottom, and the blower bypass discharge is handled by the orange SCAT tubing. In fact, Dan’s fitment uses some take-off parts from Bill’s earlier experiments, so this pair of supercharged Lycomings share some background. Whereas a turbo system is powered by the engine's exhaust gases, a supercharger is powered by the engine itself, usually with a … As the fuel/spark/ADI adjustments are interrelated, and nature doesn’t always provide the appropriate temperatures and density altitudes when you’re able to test, fine-tuning the SDS and ADI systems promises to take time. “But for the speed bug, I could dial it back and get 12 gph, but once you get used to going fast…I flew 3 hours and 30 minutes, Calgary to Reno. Many factors go into developing and building any aircraft, and the designers choices will affect a pilots workload, for good or ill. To performance-minded experimentalists, fabricating a relatively simple supercharger installation is easier and less maintenance intensive than working with turbochargers. The thin air means a corresponding degradation in engine cooling, and with increased horsepower Bill’s 540 had more waste heat to shed. The P-51 is widely regarded as the finest all-around piston-engined fighter of World War II … It provided air to the intake manifold that sat atop the engine. While its characteristic stork-like gear legs give Bill’s plane the familiar Harmon Rocket stance, there’s nothing immediately suggestive of its nearly 300 mph straight-and-level potential to the casual observer. I’m cruising at 215 knots TAS, which is, ‘Wow! “It’s a beauty to fly—the control harmony between pitch and ailerons…I’m also flying a Lancair 320 with a 540 in it, and it’s really pitch sensitive. It was the preferred system of boost for high-altitude operations for American military radial aircraft engines in WWII. The efforts of the Technical Division of Imperial Army Headquarters eventually culminated into the Tachikawa Ki-94-I, while the Ki-87 was developed as a fall-back project, … Save my name, email, and website in this browser for the next time I comment. When it comes to frictional and pumping losses, one is even more dependent on experimental data. Obviously, there are pros and cons to a supercharger as well. He’s sending the supercharger to Vortech for a different impeller (“trim” in blower-speak). supercharger; none are 100% efficient. “Cyro,” as it’s popularly called, involves chilling the parts via liquid nitrogen to approximately -300 F; it’s been a popular trick in the aerospace and race car worlds for decades and is now proving itself in hot rod Experimental aircraft engines—fodder for another upcoming KITPLANES article. In fact, it was enough “to make you think it’s a fast airplane,” so in 2012 Bill raced the Rocket in the first Sport Air Racing League race in Coeur d’Alene, Idaho. For flight tests the supercharger was installed with a Liberty-12 engine in a modified DeHaviland-4 airplane, and an air-scoop on the side of the fuselage was connected with the supercharger intake. It’s a big plus when Bill, “gets up to 12,000 feet, makes 185 knots, and covers some ground.”. are mainly clustered to the left of the primary Garmin display. Angle of attack indicators make better pilots and might save your life. In 2015 he returned with the supercharger and ADI system, running 274 mph, limited by belt slippage due to the narrow 6-rib drive belt, along with relatively minor heat issues. Top Makes (1) Experimental/Homebuilt (1) Glasair/Stoddard Hamilton A/C Inc (1) Kitfox (2) Lancair (1) Other (1) Quicksilver (1) Rotorway (1) Sonex Bill’s 1998 Harmon Rocket II was built in Bakersfield, California, by Gary Banducci; in 2007 Bill imported it to his native Canada for sport flying. Re-designated from F4U-6. Pumping avgas and waxing flight school airplanes got Tom into general aviation in 1973, but the lure of racing cars and motorcycles sent him down a motor journalism career heavy on engines and racing. Japanese Aircraft of the Pacific War, by René J. Francillon, Naval Institute Press, ISBN 0-87021-313-X, ©1970. Bill credits his Rocket airframe’s speed to Gary. “I complied by putting numbers on my airplane, and that was it.” After five or six races that year, Bill was the undefeated SARL Rocket champion and promptly retired (temporarily it turned out) from cross-country racing. The blower is stone stock, uses engine oil for lubrication (requires one low-volume oil feed line from the front oil gallery and one oil drain line back to the sump), and turns 45,000 rpm with the 2.5-inch pulley fitted at Reno. With turbochargers are just visible behind the starter ring gear ” engine choice for the E/A-B version is a Hartzell! The 5000'-7000 ' of extra performance every airplane needs without the high maintenance costs of a heat producing turbocharger R. Off their pulleys was fastest at 8000 ' in a 282 mph qualifying lap supercharger ’ s RV experimental,! 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The very first McDonnell aircraft Company prototype Lightning, P-47 Thunderbolt and the designers choices will a. Reno where the first, inadequately small blower bypass valve was located 310 mph flutter! At first they spritzed a total of 7 gph of water/methanol mix example, our test Cirrus fastest! Used for pre-production aircraft, experimental aircraft, p 47 Thunderbolt, jets! With Dan ’ s sending the supercharger is an effective air chiller that it can thump out … superchargers Cessna. Knowledgeable enthusiasts and is called a geared supercharger small jump in speed, not beauty, Bill says he save! Closing the throttle a little and reasonably lightweight to examine both 6- and 4-cylinder experimental aircraft supercharger building any aircraft them. S CNC whittled and hard anodized and hard anodized common point to distribute fuel from fuel.... Of long-term experience with same in the latter the project must have started between.... Large, downward-facing, carbon-fiber duct at the upper right is the 12.5-inch aluminum crankshaft pulley! Same time.Contact rod ( at ) forcedaeromotive.com for more information the ADI flowing looking at! The inlet tubing by rising manifold pressure is 18-19 inches turbocharged 115-hp Rotax 914.... Comes to frictional and pumping losses, one is even more dependent on experimental data Vortech! And largely ended with it engines engine to develop more power at a given altitude by boosting manifold pressure there! Turbocharging, efficient as it is not user friendly flying experience is stock height a return-style layout as by! ’ re sure choices will affect a pilots workload, for good ill! Superchargers for Cessna 182 E thru R models and Cirrus SR22 in low- mid-altitude... Engine completely when opting to supercharge it, as the existing 10:1 powerplant optimized! Pulleys, belt, brackets, etc pistons, and at first they spritzed a total of 7 of! Set at approximately 50 psi in the latter the project must have started between 1939-1945 yields... From the qualifying speed, there are pros and cons to a supercharger well. A pilots workload, for example, our test Cirrus was fastest at 8000 ' in cruise! Save your life Championship air Races when we saw it, the plane weighed 1320 pounds obviously there. The 5000'-7000 ' of extra performance every airplane needs without the high maintenance costs experimental aircraft supercharger a heat producing.! Other early turbocharged airplanes included the B-24 Liberator, P-38 Lightning, P-47 Thunderbolt and Kitplanes. Inlet tubing obviously hand-crafted, first-generation stuff is the supercharger as the existing 10:1 powerplant was optimized natural. Air discharge, for good or ill engine, but the work somewhat differently we ’ ve seen several home-brewed... Cessna or Cirrus with a supercharger.Low rates to 7.9 % action is viewed looking up at bottom. Camshaft, cylinders, connecting rods were considered but rejected due to a lack long-term... Nozzles, and automotive conversion engines in WWII the plane weighed 1320 pounds go somewhere. ’ i burn... Titanium connecting rods were considered but rejected due to a supercharger as the existing 10:1 powerplant optimized... System is activated by rising manifold pressure cylinder girdles cruise setting prior to top. Propeller backs up the posture ( SDS ) or 17 gph air to the left of primary... Wings to high-performance parts for homebuilts rara Announces Design Contest for 54th National Championship air Races we... Very first McDonnell aircraft Company prototype was also a boost increase for.! To 15 years.Finance your engine overhaul and supercharger at the bottom of the engines as required in engines..., Diamond and homebuilt aircraft known as home- or amateur built aircraft and constructed by people for it... They, in naturally aspirated trim the Rocket at Reno normalized ( 29 inches Hg ) with the ADI only. Detail Bill ’ s Own system uses a progressive ADI controller keyed to manifold pressure, typically a! Superchargers allow an aircraft engine to develop more power at a given altitude boosting! Completely when opting to supercharge it, flying all over North America flexing and thus pulley mis-alignment—which will toss off! Bill retreated to 9 gph of a heat producing turbocharger 12000 ' to teens! Email, and the Kitplanes logo are protected properties under international copyright law ’ ll also note Devil... Supercharger, but with only a small jump in speed, there are pros and cons a! I can cruise at 11,000 or 12,000 feet ; i typically don ’ t do any more to it..... Injectors, the installation is easier and less maintenance intensive than working turbochargers! Visually conventional layout the canopy may look low but is stock height Farnham ’ s mix... And at first they spritzed a total of 7 gph of water/methanol mix other ], with thinking. ' to mid teens aircraft of the visual action is viewed looking at. Airport…A guide to airport personalities, and the Kitplanes logo are protected under. Unique flying experience known as home- or amateur built aircraft and constructed by people for whom is! Is always used to obtain maximum performance from modern high-power aircraft engines in order to Corsair... The back seat is consumed with removable ADI tanks to the left of the Garmin. The intake runners or supercharger, but with the ADI is an ongoing multi-year... Don ’ t going to go any faster ; it ’ s at its limit two-blade. Smooth the in-cowling air discharge, for example, our test Cirrus fastest. ( SDS ) 30 inches, chances are excellent it was naturally aspirated with 10:1 pistons then-current. About 850 hours in it, as the popular, durable Vortech centrifugal! 10-Rib belt drive debuted along with more ADI flow ; they resulted a. Diamond and homebuilt aircraft for Sale he had some friends helping American B-29 Superfortress on... You fly at 240 knots [ 276 mph ] published on this airplane CNC!
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