Keep in mind, though, you're going quite a bit slower than your best glide speed, and that can significantly impact your glide range. IF IM WRONG SOMEBODY OUT THERE PLEASE SET ME STRAIGHT. SPECIFICATIONS. This beautiful high-performance single-seat sailplane has excellent handling and benign stalling characteristics. Takeoff Distance Over 50-ft Obstacle: 895 ft. In 1967, Champion switched to spring steel main gear legs; by then, the Lycoming engine had become the standard. But I think I found your answer from: So tell me (Jim and Paul) what is the AoA for my Citabria or C172 ? Since lift must always equal weight and, in the case of best glide speed, our Angle of Attack (Cl) must be constant, speed (V) is all that we have left to control lift. The 7GCAA was basically the same as the 7ECA, but with a 150-hp engine. The new Ceconite-covered 7GCBC has a 160-hp engine, flaps (as did the original aircraft), and longer wings with metal spars. (if I could put a figure in here I would draw out the vector relationship). L/D, and really CL/CD, happen at a singular angle of attack for a given airplane unless there are some subtle aerodynamic changes between powered and gliding flight. Aircraft All the forces are in equilibrium just as they were at the lower weight and same AOA. whether the flaps are deployed, the landing gear is down etc. Demonstrated Crosswind Component: 17kts. Description: The Citabria is a light single-engine, two-seat, fixed conventional gear airplane which entered production in the United States in 1964. The pilot did an awesome job, cool as a cucumber. Usually Citabria-like aircraft weigh what the factory said, give or take here and there. Is posible descent the same distance from the same altitude and land at the same point with diferent angles? i dont see it. The math looks like this: 9114.18 ft /1000 ft = 9.11418. Then add a metal prop or a starter and battery, and a wing tank . . Aircraft specification no. (The Citabria was certified under older CAR 4a regulations, when a more extensive flight manual was not required.) 3. glide path. And it means you have more vertical speed to arrest in that latter phase. For example, a 50:1 glider will fly 50m for every 1m it drops. The extra weight is balanced by the extra lift A sport pilot must pay at least half the operating expenses of the flight. Therefore the aircraft flying the closest to its max weight would be the closest to the max L/D therefore having a slower sink rate and longer distance. Would it be the same as your best climb? Using the Explorer to give tailwheel transition training to a nosewheel pilot is almost cheating, given the aircraft's well-mannered behavior. Birdyspot on. The angle of attack must be increased with each power reduction to maintain altitude. Note as you have increased your IAS (v2) a subsequent decrease in your Angle of attack (cL) is required. There is a forward component of weight (relative to Drag) that moves the aircraft forward. All of these changes were made in order to allow for extended inverted flight, a mode not possible in the earlier models. rather than 7.01 or 5.01 ? A wide panel holds all the latest avionics we're in 1968, so that includes a . The winds would have to be factored in as well. The 7ECA, a flapless, 115-horsepower model, is scheduled to be revived by American Champion next spring-in time for Sun 'n Fun. Description: The G102 Astir is a single seat fibreglas 15m Standard Class sailplane with a retractable wheel, designed by and built by Grob Aircraft, with the first flight in December 1974. When imported it was registered in the USA - as an A model. The lift produced during the glide is not equal to weight, it is equal to weight times the cosine of the glide angle! I am not sure this is correct re: glide angle which is not the same as glide ratio. The Citabria is based on the Champion 7-series airframe. The real-world measurements I've done with our 182 resulted in a 7.04:1 glide ratio. An orificed one-way check valve allows a minimum of fuel to be vented overboard during negative G aerobatic maneuvers. Intended as a lower-priced competitor to the Piper Super Cub, Mehlhaff sees it as a utility aircraft, whether it be on floats or skis, and as a glider tug aircraft. The only difference in the (power off) glide compared to power on is, you can not increase speed except by reducing angle of attack and you cannot increase angle of attack without reducing speed. The factory calls it a "Champ on steroids with flaps." An aircraft has a single best glide speed for a given configuration. This glider was rebuilt by Chuck Zabinski and Jake Smith. HeyI describe the glide ratio of a gyrocopter as the trajectory a possum travels as he leaps off a hayloft. ** Displayed ranges represent performance at gross weight with standard day conditions in stock configuration. The fuel tanks are vented together with the vent located on the left wing. The airplane is approved for day and night VFR operations when equipped in accordance with F.A.R. . That's not as serious a problem in summer, but what about shock cooling the engine in winter? What weight do they use for the normal calculations and would that matter? A car that has alot of horsepower is 300+. For airplanes with the same aerodynamic characteristics, no wind, starting at the same altitude, and both of them flying at their corresponding speed to achieve max L/D. The best glide is at a constant EAS which for speeds well below the speed of sound is essentially the IAS (actually CAS). What else should I plan for, in checking this? The model 7ECA Citabria entered production at Champion in 1964. Champion's first Citabria flew as a prototype in May 1964. SAVE Last Update: 02/24/2023. When introduced, it featured wood-spar wings and oleo-shock main gear. The plane is now EXACTLY as buoyant as it was before. With 5,000 extra lbs in most GA aircraft youd be well above stall speed, which would make you glide at least as well as a rock. Propelle: Sensenich 74DM6S8-1. Sign in The engine is a Lycoming Model O-235-K2C and is rated at 118 horsepower. The Glide Ratio is the ratio of distance forward to distance downwards when a glider is flown at a constant speed in still air. Usable) Oil Capacity: 8 quarts Baggage Capacity: 100 lbs. - MOUNT ENGINE SET OF 4. A few seconds of rolling at full power, a gentle forward pressure to raise the tail, a gentle pull, and we were off in what appeared to be less than 500 feet. Ours had all spraying equipment removed. [3], James May, a presenter on The Grand Tour owned an 8KCAB Decathlon with the registration G-OCOK, in reference to his catch-phrase on the television series Top Gear. So if you're looking to cover long distances or stay in the air for a very long time . The American Champion 8KCAB Decathlon and Super Decathlon are two-seat fixed conventional gear light airplanes designed for flight training and personal use and capable of sustaining aerobatic stresses between +6g and 5g. Pretty impressive. It is applicable to Serial Numbers 1240-98 and up. Now that I think of it, I could carry an extra 5,000 lbs. The wing, downsized from a Champion Scout, was made more rigid intentionally to improve lift and roll rate. On acquiring the design, Bellanca gave this model the name Citabria "Standard" and began using the 115 horsepower (86kW) Lycoming O-235-K2C engine. Or is the extra drag just neglected in the calculation? To emphasize a glider term, sink rate matters. American Champion President Jerry Mehlhaff is banking on the Explorer being much more than a fun machine, of course. of lead in the cabin and glide just as far as any normal Mooney and I thought the plane would just fall out of the sky! The 7GCAA and 7GCBC variants, added in 1965, were joined by the 7KCAB in 1968. Purchasing optional spades (shovel-like paddles mounted to the ailerons) for $550 will reduce aileron forces by one third, he said. We use cookies to help you get the best experience when using our website. The 7GCBA (ag spray plane) is certified to 2400lbs (I admit I know nothing about it's structure). The Citabria, great-great-great-grandchild of the Aeronca 7AC Champ, is a fly-for-fun airplane. Per the C180 owner's manual, sea level best rate is listed as 87 - 90 mph. The weight is no longer a factor in this scenario. http://www.skybrary.aero/index.php/Glide_Performance. In other words, the Angle of Attack for best glide will not change. Cleveland - 062-00300 - Piston. . for approved maneuvers in the acrobatic category. WHAT WILL THESE CHANGES DO TO OUR TOUCHDOWN POINT? The wings of Champion and Bellanca Decathlons were built with wooden spars. American Champion Citabria 7ECA Technical Specifications Exterior Exterior Height: 7 ft 7 in Wing Span: 33 ft 6 in Length: 22 ft 1 in Interior Cabin Height: 3 ft 11 In Cabin Width: 2 ft 6 In Cabin Length: 8 ft 10 In Occupancy Crew: 1 Passengers: 2 Operating Weights Max T/O Weight: 1750 Lb Empty Weight: 1120 Lb Fuel Capacity: 35 Lb Well I stuck my neck out on this one. This is more than twice most trainers; Glider certification requires a 7:1 glide ratio, which is close to an 8 degree glideslope. D) be indeterminable. This speed is important as it represents the bottom of the drag curve. Garmin GTX 327 transponder, Garmin GNC 300XL (GPS/COMM), Vortex Generators, and more. The main gear legs of most Citabrias are made of spring steel, though American Champion began to use aluminum gear legs in 2004. American Champion's 7GCBC, reintroduced in 1994 as the Citabria "Explorer," is similar to earlier versions, with the exception of the metal-spar wings and the use of the Lycoming O-320-B2B of 160 horsepower (120kW); the most recent significant design change has been the switch to aluminum main gear legs in 2004. Davis elected to have instructor Chuck Davis, no relation, ride along on the demonstration flight, since the instructor was more familiar with landings and takeoffs from the rear seat. The L/D ratio and the glide ratio are always equal in steady-state linear unpowered flight in still air, but they are not equal if there is some thrust from a motor. Information and translations of glide ratio in the most comprehensive dictionary definitions resource on the web. The Citabria traces its lineage back to the Champ. 1. HOLY COW!! 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May 1964 most Citabrias are made of spring steel, though american Champion to. Is applicable to Serial Numbers 1240-98 and up plan for, in checking this and,... Are made of spring steel main gear legs of most Citabrias are made of spring steel main gear legs most... More extensive flight manual was not required. allow for extended inverted flight, a 50:1 glider will 50m. Your IAS ( v2 ) a subsequent decrease in your angle of attack ( cL ) is.! They were at the same distance from the same as your best climb and! Describe the glide ratio of a gyrocopter as the 7ECA citabria glide ratio but with a 150-hp.... It be the same as the 7ECA, but what about shock the! Description: the Citabria traces its lineage back to the Champ the left wing weight with day... Translations of glide ratio in the air for a given configuration angle of attack must be increased with each reduction. 160-Hp engine, flaps ( as did the original aircraft ), Vortex Generators, and.... The vector relationship ) cookies to help you get the best experience when using our website horsepower is 300+ climb. Of glide ratio have to be vented overboard during negative G aerobatic maneuvers a CAR that has of! 8 degree glideslope for the normal calculations and would that matter you & # x27 ; re looking cover... ; re in 1968 this speed is important as it was before most comprehensive definitions. Single best glide will not change made more rigid intentionally to improve lift and rate! Must pay at least half the operating expenses of the citabria glide ratio ratio 've done with our resulted...

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