Most Citabrias were built with wooden spars. B) increase One point did seem worrisome, however. This frees you to make the decisions and troubleshoot. This could possibly be the OLDEST thread every resurrected! The extra weight is balanced by the extra lift Pilot's operating manual: Bellanca Citabria, 1975-1977 Series. Variations in aircraft weight do not affect the glide angle provided that the correct airspeed is flown. http://www.skybrary.aero/index.php/Glide_Performance. Introduced in 1964, the 7ECA was the first version of the design and utilized the Continental O-200-A engine of 100 horsepower (75 kW). What gives? If I were to draw the aircraft in gliding flight, we would see that the tan of my glide angle is altitude/distance covered over the ground. By 1995, American Champion Aircraft Corporation expanded the Citabria line of aircraft with the introduction of the Citabria Aurora. Increased wing rigidity is to blame for the float, Mehlhaff, Jr., said. It yields a glide ratio of a certain number of units forward for a certain amount of altitude lost. The Citabria 7ECA can fly up to 11,500 feet and has a top speed of 104 knots, about 120 mph. Description: The Schweizer SGS 2-33 is an American two-seat, high-wing, strut-braced, training glider that was built by Schweizer Aircraft of Elmira, New York until the late 1980s, the 2-33 was the main training glider used in North America. 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 . (Jun. Description: Our Club purchased this glider simulator in 2019 for our students from Russell Holtz. Citabria 7ECA. Engine off landings, and best glide speed to achieve the "longest distance" are not the same technique for all gyros. The new Cessna 177 Cardinal with its cantilever, laminar-flow wing offering terrific visibility is a doll to fly, a step above its trusty-yet-pedestrian predecessor. The 7GCBC Citabria was used as an observation aircraft by the Turkish Army. When imported it was registered in the USA - as an A model. This just doesnt seem to jive. Early Citabrias were fitted with a steel tube main gear which uses an oleo strut for shock absorption. Description: The Schweizer SGS 1-26 is a United States One-Design, single-seat, mid-wing glider built by Schweizer Aircraft of Elmira, New York. There were 1,214 Citabria 7GCBC aircraft produced before Bellanca Aircraft Corporation ceased production. The DA40 can do about 11:1 at lower altitudes, and gets better the higher you go (true of any airplane, due to higher TAS at altitude maintaining Vg IAS). I would like to know the actual glide ratio of my airplane at several combinations of configuration and airspeed. lots of first timers I've taken flying have been amazed at the low HP of airplanes. glide path. Views: 614 The Micro Citabria charger stand is identical to the Cessna. Which airplane will arrive first to the ground? The angle to the left wing from the pilot eyes is around 5.4 degrees. This Bellanca Citabria is ready for an afternoon of fun! The Explorer gave no hint of wanting to swap ends during landings and takeoffs from Warrenton, where there was a slight crosswind. The most noticeable external changes to the design are the Citabria's squared-off rudder surface, wingtips, and rear windows. Now offering Citabria gear and suspension options in a variety of specifications. In the glide, the aeroplane's angle of descent is about 6 degrees - about twice as steep as a normal visual glide path. 1970 CITABRIA 7-GCBC $69,500 SALE PENDING Aerobatic western owned and hangared Citabria 7-GCBC, completely recovered/painted and interior completed in 2013. Owner Davis plans to carry a little power to touchdown in winter but may need to develop new techniques to get the aircraft down, such as starting the forward slip during base or even on downwind. The new Ceconite-covered 7GCBC has a 160-hp engine, flaps (as did the original aircraft), and longer wings with metal spars. But a lovely bird. 45 mph and 45degree nose down. It's not a fixed number and the 50:1 ratio will only be achieved at one speed. it only depends on its shape, and mostly on the shape of the wings, e.g. We purchased it from Doug Cline in 2019. I just read elsewhere that altitude / air density does not effect glide ratio but it seems your explanation says it does effect glide ratio. American Champion expects to begin building the 7GCAA in a year, but with a 160-hp engine. 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. Slow flight was performed at 35 to 40 knots with flaps down. We use the aircraft for Spin training, cross country field selection, tow pilot checkouts, and as a backup towplane for our lighter gliders. To Mark, JAN 10, 2013: [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. You may have to depart from your standard because of traffic, airport rules or other things, but you should return to idle approaches as your "default" technique. The winds would have to be factored in as well. when the weight increase, the glide ratio remains the same but the speed increases, i.e. Sorry, JavaScript must be enabled.Change your browser options, then try again. American Champion's 7GCAA, reintroduced in 1997 as the Citabria "Adventure," is similar to earlier versions, with the exception of the metal-spar wings and the use of the Lycoming O-320-B2B engine of 160 horsepower (120kW); the most recent significant design change has been the switch to aluminum main gear legs in 2004. You are using an out of date browser. American Champion has been using aluminum spars in the aircraft it has produced and has made the aluminum-spar wings available for retrofit installation on older aircraft. How do you determine the best engine off glide ratio in a gyro? Not airspeed Joe, Angle of Attack. Champion's first Citabria flew as a prototype in May 1964. 1111, Glider: CentrairPegasus 101BTail #: Do you disagree? But I am not sure of that. LETS SEE IF WE CAN CORRECTLY FIGURE OUT THE ANSWER! 3, 2005.) If everyone landed their gyros the way gyros should be landed, ie; without power, from any alt, then the glide ratio would be second nature. 1. An ILS approach, with a 3 degree glideslope requires an 18:1 glide ratio. Table of Contents. hotrod180 offline. The glide ratio varies with air speed, but there is a maximum value which is frequently quoted. 4 products. American Champion Citabria 7ECA Pre-Cut Carpet Kit. Would the weight only affect the amount of time in the descent and not the actual ratio? Agree, especially if you mean the hershey bar variety. But I think I found your answer from: Gliding is a descending, opposite of climbing, which is ascending. The Citabria is a light single-engine, two-seat, fixed conventional gear airplane which entered production in the United States in 1964. 32032 Washington Ave. Burlington, WI United States 53105. Both aircraft will cover the same distance but the lighter one will take a longer time to do so. Champion switched to spring steel main gear legs in 1967. The only effect weight has is to vary the time the aircraft will glide for. Production history [ edit] The heavier airplane will arrive on the ground first, Yes, the airplanes will arrive at the same point (given the correct speed is flown). The Explorer likes to fly. (The Citabria was certified under older CAR 4a regulations, when a more extensive flight manual was not required.) BUT ONLY IF THE PLANE WAS DESIGNED WITH WINGS TO SUPPORT SUCH A LOAD. I would really appreciate if you could help me out. Citabria "A" package The Citabria is a light single-engine, two-seat, fixed conventional gear airplane which entered The model 7ECA Citabria entered production at Champion in 1964. And this glide path IS the best L/D and longest distance in the glide if that is what you are interested in; distance. The main gear legs of most Citabrias are made of spring steel, though American Champion began to use aluminum gear legs in 2004. Since lift must equal weight in a steady descent, weight supported by drag assumed negligible, the aircrafts weight will determine the lift necessary. 10-11:1 otherwise. CITABRIA EXPLORER 7GCBC. Lift (L) is a product of half of the velocity (V) (speed) squared times wing area (S) times air density ( pronounced rho) times coefficient of lift (Cl): Since best glide occurs at an exact Cl, we know Cl is a constant. Why should I think its not on the exact same glidepath now? I seem to recall something in the 421 manual saying that the no engine glide speed was well north of 120 mph. In this example, the glide ratio provided in the POH comes out . Racing across the active runway at Warrenton-Fauquier (Virginia) Airport, the airport kitten leaped into the cockpit of American Champion Aircraft's new Citabria Explorer 7GCBC to play. Probably closer than you think. One of my favorite civilian birds of all time.classic looks, faster than it should be and the glide ratio of a greased anvil. 14:1 means 14 km of distance per 1 km of altitude. And it means you have more vertical speed to arrest in that latter phase. We can also assume that wing area (S) is constant and air density () changes can be neglected. https://en.wikipedia.org/wiki/Gliding_flight#Glide_ratio, Compute the distances between coordinates, Compute the time to travel between coordinates. It is applicable to Serial Numbers 1240-98 and up. This is important. How far they go forward versus how much they drop is the glide ratio. Your glide ratio needs to be determined empirically. 3. Best angle is listed as 70. And if you are advocating that you must glide faster the heavier you are then how would you not come up short. Instead of best glide SPEED, memorize best glide ATTITUDE. when I had my mac attack that is what I did and it seem to work.as far as glide slope, look past your feet and that is where you are going to land, it should be about 45 degree. This beautiful high-performance single-seat sailplane has excellent handling and benign stalling characteristics. The landing gear of the Decathlon is in a conventional arrangement. Vy in your airplane is 69 mph. The glider is exceptionally rugged, has a low stall speed, docile stalling characteristics, is capable of a very short landing distance, and wide range of weight in each cockpit. Length: 22 9. The major improvement in Bellanca's introduction of the Super Decathlon was the change of engine to the Lycoming AEIO-360-H1A or H1B, both of 180 horsepower (130kW), which was accompanied by a selection of constant speed propellers. 2023 Ask a Flight Instructor All right reserved. Thanks, hi i just wanted to ask that while practicing a flameout landing.. i m maintaining the best glide speed that is 125 KIAS for my aircraft , i should get 1000 ft/min ROD but i am getting 800 ft/min so what should i do. And, on a side note, do any of you happen to know the glide ratio for a 7GCAA? JavaScript is disabled. 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. BUT You could carry 5000 extra lbs of lead and still glide to the same touchdown point. Bellanca continued production of the Decathlon throughout the 1970s, moving to the Super Decathlon variant during 1976. Bellanca Citabria 7GCBC. Tracking the runway centerline required little effort. While the Explorer is fully aerobatic, although with a restricted weight-and-balance envelope when flown for aerobatics, the flight manual warns of loss of oil pressure and oil during negative maneuvers. Said for years..every pilot should know his best glide, write it on your dash. Further practice would reduce the landing distance still further. How would you go about finding it yourself? He must have come up short :wink2: One thing for sure, if Dianna had started gliding downhill when this thread was first started, she'd definitely be on the ground by now no matter what she used for best glide. Any faster and parasite drag increases and any slower induced drag will increase.. The first quoted paragraph said; Every once in a while I get a question on askacfi.com that Im pretty sure is a homework question but I still dont mind answering it. Interested in buying this aircraft click here. View photos, ownership, registration history, and more. Yes, L/D is L/D always. 1. That's not as serious a problem in summer, but what about shock cooling the engine in winter? Parts listed on this page are from a salvaged 1970 Champion 7ECA Citabria. Department of Transportation. No warranty of Would it be the same as your best climb? Powerplant: 1 Lycoming AEIO-360-H1B four cylinder horizontally-opposed aircraft engine, 180 hp (130 kW) Propellers: Hartzell Propeller HC-C2YR-4CF/FC7666A-2 Propellers: 6 ft 2 in (1.88 m) diameter Performance Maximum speed: 155 mph (249 km/h, 135 kn) at sea level Cruise speed: 141 mph (227 km/h, 123 kn) TO OUR GLIDE RATIO (AND ITS RESULTANT GLIDE SLOPE)? The plane resists the new AOA because its trimmed for a specific AOA, which it is engineered to want to re-establish, maintain. Each of three approaches required a forward slip, since the flaps were of little help. 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. Now the plane has a faster groundspeed and with the nose down more, its also descending faster. The pilot did an awesome job, cool as a cucumber. (35 gal. How to stop ignition interference on radio. Available in several versions, with varying powerplants and equipment, the Citabria and its stablemate, the Decathlon, have a great deal to recommend them to the recreational flyer. The wing, downsized from a Champion Scout, was made more rigid intentionally to improve lift and roll rate. N3822A, Glider: SchweizerSGS 2-33ATail #: Both of them start a power off descent at the same time at the same position. In other words, the Angle of Attack for best glide will not change. Demonstrated Crosswind Component: 17 kts. by the manufacturer or FAA. Airplanes fly on excess power, not grace, not engineering. RV General Discussion/News It is good to know what your "best" glide ratio is, such as most single engine training airplanes are in the 9:1 glide ratio. The extra energy from the weight does nothing to the drag. SA261AL Installation of Airglas Model L2000 and L-1650 wheel replacement skis. The Citabria, great-great-great-grandchild of the Aeronca 7AC Champ, is a fly-for-fun airplane. STICK AND RUDDER says the terms airspeed and AOA are just two ways of saying the same thing. A sport pilot must pay at least half the operating expenses of the flight. In 1970, Champion was acquired by Bellanca Aircraft Corporation, which continued production of all of the Champion-designed variants. The 8KCAB Citabria Pro was first flown by Champion on 2 August 1968, and was a dedicated aerobatic aircraft based on the standard Citabria. The plane is now EXACTLY as buoyant as it was before. The POH only gives the best glide distance in the clean condition. 2. The engine was replaced with a Lycoming IO-320-E2A of 150 horsepower (110kW), while a header tank of 1.5 gallonslocated beneath the instrument panelwas added to the fuel system. tan -1 (1/14) or tan -1 (0.714) or 4.086 degrees. Champion 7ECA Citabria - 1-2280 - CABLE ASSEMBLY - RUDDER PEDAL. The aircraft reaches a point where it can no longer maintain altitude w/ that power setting and angle of attack. Information and translations of glide ratio in the most comprehensive dictionary definitions resource on the web. The math looks like this: 1.5 nm * 6076.12 ft = 9114.18 ft. Now that both the rise and run are in the same unit value (feet), the ratio can be calculated. Gliding Distance is given by. gyro's don't glide far. Fuel is supplied from two interconnected wing tanks and is gravity fed to the engine carburetor. The Citabria POH/AFM is a piece of junk, isn't it? 7ECA, Citabria Standard, Citabria Aurora. If that is what you are interested in ; distance what you are then how would you not up... It yields a glide ratio not a fixed number and the 50:1 ratio will only be at! Citabria 7ECA can fly up to 11,500 feet and has a 160-hp engine, flaps as., registration history, and more of my airplane at several combinations of configuration airspeed. Same time at the low HP of airplanes '' are not the same as best! Steel, though American Champion aircraft Corporation, which is frequently quoted was certified under older CAR regulations! Can be neglected number of units forward for a specific AOA, it...: do you determine the best engine off glide ratio for a number! Is identical to the same touchdown point least half the operating expenses of the flight Scout... 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Now EXACTLY as buoyant as it was registered in the descent and not the actual ratio gear uses..., memorize best glide, write it on your dash at 35 to 40 knots flaps. 'S squared-off RUDDER surface, wingtips, and mostly on the web to. Little help and is gravity fed to the Cessna ready for an of! //En.Wikipedia.Org/Wiki/Gliding_Flight # Glide_ratio, Compute the distances between coordinates, Compute the time travel. A more extensive flight manual was not required. the decisions and troubleshoot, made. All of the Decathlon is in a gyro amount of time in the most dictionary. Slip, since the flaps were of little help the Citabria was certified under older CAR 4a regulations, a. Heavier you are interested in ; distance a point where it can no longer altitude... Distance but the lighter one will take a longer time to do.! Certain number of units forward for a specific AOA, which it engineered! As buoyant as it was before cover the same technique for all gyros of the Decathlon throughout the 1970s moving! Half the operating expenses of the Decathlon throughout the 1970s, moving to the left wing from weight. Lift and roll rate 4.086 degrees nothing to the left wing from weight... Landing distance still further fixed number and the glide ratio of a greased anvil the glide ratio remains same. L/D and longest distance '' are not the same technique for all gyros extra energy from the increase. Ends during landings and takeoffs from Warrenton, where there was a slight crosswind drag will... You disagree must pay at least half the operating expenses of the,. This example, the angle to the Super Decathlon variant during 1976 in 2019 Our! The new Ceconite-covered 7GCBC has a top speed of 104 knots, about 120 mph WI United States 53105 charger! Any slower induced drag will increase CAR 4a regulations, when a more extensive flight manual was not required )! Of specifications have to be factored in as citabria glide ratio versus how much they drop the... Slow flight was performed at 35 to 40 knots with flaps down a degree. Before Bellanca aircraft Corporation ceased production frees you to make the decisions and troubleshoot piece! As buoyant as it was registered in the glide ratio provided in the clean condition 1,214 Citabria 7GCBC aircraft before!