Following what has become standard design protocol for electronic aircraft piston engines—like there are that many of them—the 915 iS ignition system is an automotive-type CDI design, but with dual-channel or dual-lane redundancy. Bristell Aircraft. Based on the proven concept of the Rotax 912 / 914 engine series, the Rotax 915 iS engine offers more power, the best power-to-weight ratio in its class, full take-off power up to at least 15,000 feet (4,570 m) and a service ceiling of 23,000 feet (7,010 m). This site uses Akismet to reduce spam. Learn how your comment data is processed. It’s a sophisticated engine monitoring system developed by Stock Flight Systems of Germany. Based on the proven concept of the Rotax 912 / 914 engine series, the Rotax 915 iS engine offers more power, the best power-to-weight ratio in its class, full take-off power up to at least 15,000 feet (4,570 m) and a service ceiling of 23,000 feet (7,0 min. Zenith has been talking to Rotax about a firewall-forward kit to address installation complexity. Statistics. The Rotax crankshafts aren’t that. Based on the proven concept of the Rotax 912 / 914 engine series, the Rotax 915 iS engine offers more power, the best power-to-weight ratio in its class, full take-off power up to at least 15,000 feet (4,570 m) and a service ceiling of 23,000 feet (7,010 m). To be perfectly sober about it, it’s really more of a logical continuation of Rotax’s developmental history dating to the 1970s when the company, then owned by Bombardier, had a famous what-the-hell moment when it realized it was selling far more snowmobile engines than there were snowmobiles. Vill du fråga något?, sänd ett e-mail adressen är; info(at) lycon.se That’s kind of fantastic when you think about it,” Heintz added. Inspection and/or replacement of the valve push-rod assy., rocker arm left and rocker arm right for ROTAX Engine Type 912i, 912 and 914 (Series) Rotax-Owner.com is a web based support system which provides a common access point for locating key Information - Education - Support for their Rotax Aircraft Engines such as the Rotax 912, Rotax 914, Rotax 912 iS, Rotax 915 iS, Rotax 503 and Rotax … Like all of Rotax’s four-cylinder aircraft engines, the 915 iS relies on impressively small displacement (82 cubic inches) and high RPM—4800 rpm in cruise. Also exists in a certified version: Rotax 912 S. 4 horizontally - August 28, 2020 Aircraft ; Technical details . MON 85 / RON 95, min. Are these numbers better than the typical Lycoming or Continental engine? When compared with heavier Lycomings, say the IO-360 parallel valve, the power to weight still favors the Rotax, but the Lycoming just has more raw power for an airframe that might need it for takeoff or low-altitude climb performance. 500 Airport Road. Please enquire It also has a torsion bar arrangement to damp prop and shaft harmonics. Rotax 915 iS A /iSC A. http://www.sportaviationmagazine.com – Rotax 915 iS, 135 HP, turbo-charged aircraft engine based on the Rotax 912 iS. 915 i A SERIES engine pdf manual download. Actual installation numbers will change those calcs, but the dry weights show there’s a weight hit when installing intercooling. Heretofore, Rotax engines have used a dog-and-gear arrangement to both isolate the prop from torque pulses and to serve as sort of a fuse in case of prop strike. To mark certification of the 915, BRP-Rotax invited Pilot to visit its production facility in Austria and fly a selection of aircraft powered by the new 141hp engine | Words Dave Unwin | Photos: Dave Unwin & BRP-Rotax Product Minute: Lycoming Thunderbolt Engines, Building a Tunable Carbon Fiber Induction Plenum. ROTALK NEWS Episode 4 SB-912-073/ SB-914-055 Replacement of Carburetor Circlip ASB on Exchange of Exhaust Valves on ROTAX 915iA, 915iB and 914 (Series) SB-915 i A-004/SB-915 i … “I did the numbers on the Questaire Venture, and if you subtract out the engine weight Delta, you get down close to Light Sport weight limits. Paul Bertorelli is Editor at Large at Belvoir Media Group which publishes Kitplanes Magazine, The Aviation Consumer and AVweb.com. ASB-915 i A-006, ASB-912 i-010 Inspection and/or replacement of fuel pump assy. The O-360s are typically in the 0.55 hp/lb. The Rotax 914 is a turbo-charged, four-stroke, four-cylinder, horizontally opposed aircraft engine with air-cooled cylinders and water-cooled cylinder heads.It is designed and built by the Austrian company BRP-Powertrain, owned by Bombardier Recreational Products (BRP), as part of its Rotax brand.. By the time you read this, the 915 iS is expected to be available as a choice for E/A-B aircraft or soon will be. The 915 is not a true clean-sheet engine, but rather a stretched version of the 912. In that universe, Rotax’s well-regarded four-cylinder engines have been a contender for builders and designers, especially those looking for the most power for the least weight. You would expect Rotax to know that pounding more fuel and air into the jugs would beat up the valves, and they’ve anticipated that. Rotax went to forged pistons rather than cast, and the internal lubrication is set up to squirt cooling oil on the undersides, again as a concession to the potential torture of high-boost turbocharging. Is you filter safety wired? It can be electronically or hydraulically controlled. “Rotax has shown they’re here to stay, and you can legitimately design an airplane around a Rotax engine. Description. Lockwood’s Dean Vogel told me he did just that with the Questair Venture as a thought exercise. Also for: 915 is, Om-915 i a, 898851. At the U.S. View online Maintenance manual for Rotax 915 i A SERIES Engine or simply click Download button to examine the Rotax 915 i A SERIES guidelines offline on your desktop or laptop computer. When radiators and all the associated plumbing are installed for the Rotax powerplants, the weight and complexity go up and so does cooling drag, variable with the type of airframe. The numbers paint a mixed picture. The Rotax 915 is a 135HP turbo aircraft engine manufactured by Bombardier Recreational Products (BRP) in Austria. The test aircraft we flew wasn’t equipped with a percent power indicator, so we couldn’t estimate BSFC. And like other kit providers, they know the market is price sensitive. Its layout is 4 cylinder boxer with a gear reduction. Sport Aviation Expo in Sebring, I asked a few kit builders what their impression of the engine was. It shaves a couple of seconds off the water run and boosts climb rate by about 200 feet per minute. When it introduced the 912 iS in 2013, Rotax also added electronically controlled dual-port fuel injection. Starting was as with any Rotax 9-series engine I’ve ever flown. Press. Rotax 912 ULS DCDI 100HP* 4-stroke engine specially developed for recreational aircraft. range. And that’s what the 915 iS is. With the announcement of the 135-hp 915 iS, Rotax has upped its game with a powerful, sophisticated engine that’s in a unique power and weight category for factory-provided engines. Rotax 914 UL DCDI 115HP 4-stroke turbocharged engine specially developed for recreational aircraft. The 915 iS is loaded with sensors wired into the ECU, and that data is available on an electric bus. Also exists in a certified version: Rotax 914 F. 4 - December 5, 2020 It will give builders the option of a sophisticated, electronically controlled engine with impressive high-altitude capability, at least on paper. The Searey I flew was equipped with a prototype version of a device called the EMU915iS. For reference, Lambda 1 is a stoichiometric air-to-fuel ratio of 14 to 1; 1.05 is slightly lean of stoichiometric. The name ‘TSi’ is a homage to its Rotax 915 iS engine and marks a new chapter in TAF’s vision to build the world’s most loved light aircraft. Manufacturing efficiency, mainly. This site uses cookies to provide services, customize ads, and analyze traffic. I flew in two 915-powered aircraft with Rotax pilot, Christian Sixt, an American flight school-trained aviator with an impressive list of FAA certificates. It has a dry power-to-weight ratio of 0.49 hp per pound. Engine family : 4-Stroke : Number of cylinders : 4 : Performance : 104 kW / 141 HP ~ … The engine management system has a feature called Eco. While the extra horsepower is notable in the Searey, it’s hardly night and day. Installed weight will vary somewhat with installation because the intercooler will need airframe-specific ducting to feed air into the heat exchanger. : +43 (0) 7246 6370 The list of alternative engines beyond Lycoming’s dominance is wide even if the volume isn’t deep. The 915 iS will require a constant-speed prop. This engine is due for release in 2017 . AKI 91 WWW.FLYROTAX.COM. I suspect builders are going to be writing some spreadsheets to calculate horsepower performance against the lighter overall weight of the 915 iS. So with essentially the same displacement, the power boost comes from an intercooled turbocharger, while a constant-speed three-blade prop—a requirement for the engine—makes it possible to turn the power into thrust efficiently. Don't be surprised if it inspires a new design or two. Serendipitously, the company stumbled into the nascent ultralight market, and by sheer happenstance, it became an aircraft engine company. Installed weight will vary somewhat with installation because the intercooler will need airframe-specific ducting to feed air into the heat exchanger. A fellow aviation journalist — a pilot of 300 different aircraft — Dave Unwin felt the 915 started “softer.” He also felt it seemed to run slightly smoother. Save my name, email, and website in this browser for the next time I comment. While the 914 engine gets an additional 15 HP from turbocharging, the 915 represents Rotax’s first foray into intercooled turbocharging for a … Airmaster is currently assessing propellers for this engine. Rotax’s software includes performance numbers up to 23,000 feet. Contact US. : +43 (0) 7246 6370 Move over Pratt and Rolls-Royce. If you’ve seen a Lycoming crankshaft, you know that it’s a single-piece forging. Rotax determined that the efficiency gains from direct injection in an engine operating at 75% power weren’t worth the effort and expense of redesigning the cylinders. The turbocharged 914, with its old-school carburetion, is similar to the 912 ULS at 0.70 hp per pound. The best-case power-to-weight ratio for the 915 iS is 0.76 hp per pound, while the 912 iS is 0.71 hp per pound. Naturally, he is also intimate with the 915iS. ASB-915 i A-006, ASB-912 i-010 Inspection and/or replacement of fuel pump assy. The Rotax 915 iS is an Austrian aircraft engine, produced by Rotax of Gunskirchen for use in ultralight aircraft, homebuilt aircraft, light-sport aircraft, small helicopters and gyroplanes.The engine was type certified in 2017.. Fortunately, it’s all automagic and mostly transparent to the pilot in the form of a pair of annunciator lamps in the cockpit that confirm the health of each lane. It will obviously be an upcharge over the 912 or 912 iS, but the company’s Kevin Oaks said no price has been set yet. BRISTELL LSA BRISTELL UL BRISTELL HD; Dimensions ; Wing span: 29,95 ft: 26,8 ft: 26,8 ft: Wing area: 126,48 ft 2: 113 ft 2: 113 ft 2: Wing loading: 10,45 lbs/sq ft … Looking at other engines in the Rotax line, the stalwart 912 ULS has a power-to-weight ratio of 0.68 hp per pound, using the Rotax dry weight data. ROTALK NEWS Episode 4 SB-912-073/ SB-914-055 Replacement of Carburetor Circlip ASB on Exchange of Exhaust Valves on ROTAX 915iA, 915iB and 914 (Series) SB-915 i A-004/SB-915 i … Whether the 915 iS is a great leap forward depends on how you define great leap. It’s not so simple as this, however. In addition to recording all of the engine’s critical parameters, Peter Stock told me that, in its final production form, the EMU will automatically download recorded engine data for forwarding to Rotax whenever it’s within range of an appropriate data network, at least in production aircraft. BRP-Rotax INSTALLATION MANUAL MECHANICAL INTERFACES Fusebox mount- ing points Figure 3.8: Fusebox –Connections and dimensions Effectivity: 915 i A Series 24–00–00 Edition 0/Rev. Of course, it has to have a constant-speed prop and it’s way too fast for a Light Sport, but you’re getting the weight down there with this engine,” Vogel said. According to Rotax’s side-by-side data flown in a Tecnam P92, the 912 iS achieved BSFCs below 0.40, which is among the best efficiency for gasoline engines and rivals diesel performance. Vacuum electrical connectors before installation to avoid difficult troubleshooting later. The latter may require ducting, complicating the installation. Rotax will eventually offer ongoing engine analysis and likely predictive fault and maintenance tracking. At 125 hp, Continental’s IO-240 is a fair apples-to-apples. Utförsäljningen fortsätter med priser från år 2019 ! While the carbureted 914 engine gets an additional 15 hp from turbocharging, the 915 represents Rotax’s first foray into intercooled turbocharging for a production aircraft engine. Lockwood Aviation’s Dean Vogel says the engine will require a prop governor for the constant-speed prop, and it doesn’t matter if it’s electronic or manual. At Zenith Aircraft, Sebastien Heintz said, “I think they’ve done everything right, but just as we’re seeing with cars and motorcycles and everything, with this technology, it’s just not as accessible to the typical builder.” Like Lockwood’s Vogel, Heintz thinks it will take new, clean-sheet designs to capitalize on the strength of the 915 iS. Photo by Dave Unwin Thanks to its good power-to-weight ratio and low fuel consumption, the 912 rapidly gained acceptance, even if the way it started and stopped—all at once with a shudder—made most of us wince. 84.0 mm 3.31 in 61.0 mm 2.4 in 1,352 cm˝ 82.5 cu. Paul's an ATP-CFII-MEI. And the boost is right up there, at a maximum of 50 inches, according to Rotax’s Marc Becker.