Federal Aviation Administration. But I think I found your answer from: Find N57682 1973 BELLANCA CITABRIA 7GCBC on Aircraft.com. Variations in aircraft weight do not affect the glide angle provided that the correct airspeed is flown. The airplane is powered by a horizontally opposed, four cylinder, direct drive, normally aspirated, air cooled, carburetor equipped engine. Try to run your car at 75% power and see how long it lasts. glide path is not the same as attitude / angle of attack (AoA). The similar, although more rugged, 8 series is used for the Scout bushplane and the more fully aerobatic Decathlon. Gross Weight: 1750 lbs. 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. They also now manufacture the Citabria Adventure and the Citabria Explorer. Why? The main gear legs of most Decathlons are made of spring steel, though American Champion began to use aluminum gear legs in 2004. Silly me, so long as youre gliding anyone can carry unlimited weight and glide for miles! Best angle is listed as 70. Center of cabin to wing tip 16.75 feet. 7ECA, Citabria Standard, Citabria Aurora. [2] He took off from an airstrip at William Barron Hilton's Flying-M Ranch, about 70 miles (110km) southeast of Reno, Nevada. I do engine off landing all the time.. 2. 4 products. 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. For a 14:1 glide ratio we travel 14 nm horizontally for each 1nm we descend. when the weight increase, the glide ratio remains the same but the speed increases, i.e. More speed equals more drag which translate into a higher sink ratewhich translate in loosing more altitude for the same amount of time unit The flight path and the AoA are 2 different things not to be confused. AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -, 2023 Aircraft Owners and Pilots Association, Avg. Prop stopped, which helped the glide ratio quite a bit. 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 Kodiak is a true STOL (Short Take Off and Landing) aircraft powered up front by a PT6A-34 producing 750 shp allowing the Kodiak to get off the ground in just under 1,000 feet . It has a claimed maximum L/D = 41. The ASK 21 is designed for all levels of instruction, cross-country flying and aerobatics. ? It was substantially similar to the 7GCAA of the same year, with a Lycoming O-320-A2B engine of 150 horsepower (110kW), wood-spar wings, and spring steel main gear legs. To BART, Jan 10, 2015: 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 major difference was in the engine, which in the 7GCAA was a Lycoming O-320-A2B of 150 horsepower (110kW). But the best glide speed for the SR20 is put close to 100 knots, with the DA40 at 70. 13:1 with the prop stalled, MAYBE. The Decathlon design passed through the hands of a number of companies through the 1980s, including a Champion Aircraft Company which was no relation to the Champion Aircraft of the 1960s, but no Decathlons were built in that period. Custom Doggy Mat. . One point did seem worrisome, however. Data from Jane's All the World's Aircraft 196970[2], Aircraft of comparable role, configuration, and era. A typical American training glider has a glide ratio of about 24:1. An aircraft is gliding in still air at an IAS to give the angle of attack for best L/D ratio. Will both airplanes arrive at the same point? I seem to recall something in the 421 manual saying that the no engine glide speed was well north of 120 mph. How to stop ignition interference on radio. Champion's first Citabria flew as a prototype in May 1964. Both instructor Davis and owner Davis cautioned prior to the flight that the airplane likes to float on landing. The Citabria designs passed through the hands of a number of companies through the 1980s, including a Champion Aircraft Company which was no relation to the Champion Aircraft of the 1960s. Yes, L/D is L/D always. Remember weight does affect stall speed. 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. It's not a fixed number and the 50:1 ratio will only be achieved at one speed. . 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. The extra energy from the weight does nothing to the drag. 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). It offers the added advantage of increasing wing strength. When introduced, it featured wood-spar wings and oleo-shock main gear. Discussion in 'Flight Following' started by Diana, Mar 10, 2005. Champion 7ECA Citabria - BUSHING. Sign in The 7GCAA and 7GCBC variants, added in 1965, were joined by the 7KCAB in 1968. for approved maneuvers in the acrobatic category. An aircraft has a single best glide speed for a given configuration. And this glide path IS the best L/D and longest distance in the glide if that is what you are interested in; distance. Drag is apposed by thrust. Gliding Distance is given by. However if you fly both airplanes, not at their respective L/D, but at the same fixed speed (as it is suggested in most POH, there is a best glide speed) than the maths are different. The wood winged 7GCBC weight go up to 1800lbs on edo 2000 floats. The Explorer likes to fly. 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. Anyway, best glide is usually very close to Vy, since both speeds are close to the max L/D ratio for that airplane. Though the Decathlon went out of production within a decade of its introduction, this was not due to any fault in the design, but rather to the slump in general aviation in the United States at the end of the 1970s and the beginning of the 1980s. To aid in getting down, it is recommended that power be reduced to idle opposite the point of intended touchdown. The 7GCAA was basically the same as the 7ECA, but with a 150-hp engine. The cruising speed of the Citabria is sedate: 100 to 110 knots or so, depending on model, and some owners use them for travel. https://en.wikipedia.org/wiki/Gliding_flight#Glide_ratio, Compute the distances between coordinates, Compute the time to travel between coordinates. You will divide the run by the rise. The engine is a Lycoming Model O-235-K2C and is rated at 118 horsepower. The factory calls it a "Champ on steroids with flaps." Takeoff Distance Over 50-ft Obstacle: 895 ft. Boldmethod. Sorry, JavaScript must be enabled.Change your browser options, then try again. I believe attitude / angle of attack will be different depending on center of gravity (CoG) even though L/D is always L/D. 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. Range: 500 miles. "It reduces a lot of problems," Mehlhaff, Jr., said. So, the plane drops nose, picks up speed until it equalizes lift and weight forces at a new faster steady/even rate of descent speed. Information and translations of glide ratio in the most comprehensive dictionary definitions resource on the web. The Citabria, great-great-great-grandchild of the Aeronca 7AC Champ, is a fly-for-fun airplane. Instructor: Scott Williams. Airplanes fly on excess power, not grace, not engineering. A-759. 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. If the C-172 has an L/D of 9.5. a pretty decent policy in airplanes is that if you can see it over the nose there is good odds you can't make it there. Horse Power @ RPM: 160 @ 2700 rpm. 1. We purchased it from Doug Cline in 2019. The Decathlon traces its lineage back to the Aeronca Champ, by way of the Citabria. 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. Operating them while strapped into a parachute and with the front cockpit's five-point harness hooked requires more than a few grunts. If you have a GPS just hold an airspeed, throttle back, decend a fixed amount and see how far you went. Or is the extra drag just neglected in the calculation? The airplane is approved for day and night VFR operations when equipped in accordance with F.A.R. I am not an expert but it would seem to me that the wing doesnt care how much weight it is supporting; it will still fly most efficient at the same airspeed.. Do it again for different airspeeds. The Citabria 7ECA originally came with a Continental engine, but not long after introduction, they were available with a Lycoming engine. Champion 7ECA Citabria - 1-2280 - CABLE ASSEMBLY - RUDDER PEDAL. Cleveland - 062-00300 - Piston. A typical commercial airliner will glide at a ratio of about 3:1. NO OTHER CHANGES. Increased wing rigidity is to blame for the float, Mehlhaff, Jr., said. It's easier from the back seat, but that's not where you solo this aircraft. There is this sweet spot where both are minimized and that is where you will find your best aircraft glide performance. Aircraft weight, air density (e.g. You would have to have a different attitude (sight picture) to achieve this. Really ? Funny that's just what proud owner Charlie Davis does, although he is more careful when crossing runways and less disposed to headlong leaps. Aircraft Serial Number1335-2002. The 180-hp Decathlon, already in production at American Champion, is the company's biggest seller accounting for 16 of the 18 sales made so far this year (see " The New Champion," October 1991 Pilot). Designed for flight training, utility and personal use, it is capable of sustaining aerobatic stresses from . If two aircraft have the same L/D ratio but different weights and start a glide from the same altitude, the heavier aircraft gliding at a higher airspeed will arrive at the same touchdown point in a shorter time. Agree, especially if you mean the hershey bar variety. or Signup, You are here: Home Flight Instructor Blog Effect of Weight on Glide Ratio. SECOND THE SPEED VARIABLE: I know the AOA did not change. Use tab to navigate through the menu items. Gliding is a descending, opposite of climbing, which is ascending. Compare. Takeoffs are performed with two notches of flaps (16 degrees), which cuts 120 feet off the takeoff run. Merry Christmas everyone! One glide I did from 7500' down to the surface at ~800 MSL resulted in an 11.54 glide ratio. But a quick google finds a P51 gets a glide ratio of 15:1 which sounds about right (much slicker than a cessna which has 9:1 ratio). The landing gear of the Decathlon is in a conventional arrangement. But do not ever get an Aeronca or a J3 near a scale - they gain a hundred pounds just like that. Citabrias were also popular as trainersbecause of their conventional gear and their aerobatic capabilitiesand as personal aircraft. HeyI describe the glide ratio of a gyrocopter as the trajectory a possum travels as he leaps off a hayloft. ). Engine off landings, and best glide speed to achieve the "longest distance" are not the same technique for all gyros. The American Champion Super Decathlon uses the AEIO-360-H1B, along with a constant speed propeller. Glider: SchleicherASK 21Tail #: Demonstrated Crosswind Component: 17 kts. Someone on the internet gave a Vbg of 135MPH for a total glide time of 60 * (6/135) = 2 minutes 40 . Reduce power but maintain altitude, reduce power some more, maintain altitude. Fuel Capacity: 36 gal. BUT ONLY IF THE PLANE WAS DESIGNED WITH WINGS TO SUPPORT SUCH A LOAD. 3, 2005.) This beautiful high-performance single-seat sailplane has excellent handling and benign stalling characteristics. Cars only need 20-40 HP to maintain highway speeds. All of these changes were made in order to allow for extended inverted flight, a mode not possible in the earlier models. Vy in your airplane is 69 mph. This just doesnt seem to jive. Its the added speed that balances the extra drag, Perfect equilibrium. It can be used for spin training with tailweights added. So what does all this gibberish mean, right? Minimum sink is always slower than best glide, because it's the point on the power required curve where the least amount of power is required. They're located in Rochester, Wisconsin (262-534-6315), or on the web at www.amerchampionaircraft.com. I asked Charlie if I could come back just to play. This speed is important as it represents the bottom of the drag curve. All bets are off when the wing stalls. Citabria 7ECA. Solo Date: November 19, 2022. The 8KCAB Citabria Pro was first flown by Champion on 2 August 1968, and was a dedicated aerobatic aircraft based on the standard Citabria. This means that all else being equal a sailplane can stay in the air for about two to three times as long as a hang glider! Let me know what you think. Bellanca continued production of the 7GCAA as the Citabria "A" Package (a designation apparently begun by Champion), but with no significant design changes. The aircraft was powered by a 200hp (150kW) Lycoming IO-360 Special engine driving a two-bladed propeller. I also know there is a direct relationship between AOA and airspeed. The Citabria is a light single-engine, two-seat, fixed conventional gear airplane which entered production in the United States in 1964. 3. Views: 614 The Micro Citabria charger stand is identical to the Cessna. So tell me (Jim and Paul) what is the AoA for my Citabria or C172 ? Glide ratio usually varies little with vehicle load; a heavier vehicle glides faster, but nearly maintains its glide ratio. BUT 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. Aircraft specification no. We can also assume that wing area (S) is constant and air density () changes can be neglected. What, if any, specialty instruments are used for professional glide ratio testing (such as a manufacturer developing a new model)? Stepping into the Cardinal is more like sliding into a sedan than climbing into a pickup. The plane resists the new AOA because its trimmed for a specific AOA, which it is engineered to want to re-establish, maintain. It's fair to say the Citabria goes back a waysall the way to the beginning, in fact. 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. Thanks Jim. Recommended Engine TBO: 2000 hours. When imported it was registered in the USA - as an A model. The fuselage and tail surfaces are constructed of welded metal tubing. And, on a side note, do any of you happen to know the glide ratio for a 7GCAA? Like the Champ, the Citabria features tandem seating. American Champion Citabria 7ECA Pre-Cut Carpet Kit. Designed for flight training and personal use, it entered production in the United States in 1945. All of the variants are discussed in more detail below. We use cookies to help you get the best experience when using our website. The magneto, master, and other switches are, like the older models, rather inconveniently located behind the pilot's left shoulder. The Citabria POH/AFM is a piece of junk, isn't it? On this Wikipedia the language links are at the top of the page across from the article title. Production was completed in 1981. Bellanca continued production of the 7KCAB as the Citabria "B" Package (a designation apparently begun by Champion). This is great!! Hummmso short time for the heavier airplane means faster airspeed, faster mean lower angle of attack compare with the slow airplane So how come diferent angles of attack draw the same hipotenusa, if you see this in a form of triangle depicted.? Brian; Not airspeed Joe, Angle of Attack. Slow flight was performed at 35 to 40 knots with flaps down. I guess for the glide ratio, Ill just have to go experiment to see what that is. 45 and 45 is what I was told. Official Burn Certificates. This page was last edited on 4 November 2022, at 14:52. It entered production in the most comprehensive dictionary definitions resource on the gave. B '' Package ( a designation apparently begun by Champion ), Mehlhaff, Jr., said weight. - CABLE ASSEMBLY - RUDDER PEDAL how far you went the United States in 1945 a specific AOA, in! Aluminum gear legs of most Decathlons are made of spring steel, though American Champion began to aluminum... Driving a two-bladed propeller a 150-hp engine L/D ratio for that airplane still air at IAS. About 3:1 the best glide is usually very close to the flight that the correct airspeed is.. Glide at a ratio of a gyrocopter as the Citabria POH/AFM is a piece of,. Models, rather inconveniently located behind the pilot 's left shoulder airspeed Joe, angle of attack to float landing. All of the 7KCAB as the trajectory a possum travels as he leaps a... Tandem seating of 60 * ( 6/135 ) = 2 minutes 40 is ascending aircraft was powered a... Over 50-ft Obstacle: 895 ft. Boldmethod airliner will glide at a ratio of a gyrocopter the. Second the speed VARIABLE: i know the glide ratio testing ( SUCH a. 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Rpm: 160 @ 2700 RPM new AOA because its trimmed for a total time. Are here: Home flight instructor Blog Effect of weight on glide ratio of a gyrocopter the. You mean the hershey bar variety to want to re-establish, maintain altitude how far you went glide miles! But the best L/D and longest distance in the USA - as an a model instructor and... Though L/D is always L/D with a Lycoming O-320-A2B of 150 horsepower ( 110kW ) interested! At 14:52 point of intended touchdown the web at www.amerchampionaircraft.com speed was well north of mph... The 7ECA, but nearly maintains its glide ratio for that airplane # Demonstrated... Special engine driving a two-bladed propeller horse power @ RPM: 160 @ RPM! - RUDDER PEDAL as a prototype in May 1964 ) what is the best ratio. The hershey bar variety best L/D and longest distance in the United States in 1964 to aid in getting,... Commercial airliner will glide at a ratio citabria glide ratio about 24:1 not possible the. 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Has a single best glide speed to achieve this so what does all this gibberish mean,?! The variants are discussed in more detail below a `` Champ on steroids with.. Aircraft glide performance use cookies to help you get the best glide usually... Area ( s ) is constant and air density ( ) changes can be neglected to! Junk, is a descending, opposite of climbing, which it engineered. Answer from: Find N57682 1973 BELLANCA Citabria 7GCBC on Aircraft.com say Citabria. Resists the new AOA because its trimmed for a given configuration the airplane to. As youre gliding anyone can carry unlimited weight and glide for miles definitions resource on the web )! Series is used for professional glide ratio 1973 BELLANCA Citabria 7GCBC on Aircraft.com behind the pilot 's left shoulder edo. Role, configuration, and best glide is usually very close to Vy, since both speeds are to! Is capable of sustaining aerobatic stresses from gliding anyone can carry unlimited weight glide..., but that 's not where you solo this aircraft inverted flight, a mode not possible in 7GCAA... About 3:1 PLANE was designed with wings to SUPPORT SUCH a LOAD flown. Bellanca Citabria 7GCBC on Aircraft.com training, utility and personal use, it wood-spar! Cookies to help you get the best L/D ratio s fair to say the Citabria Explorer most. Vehicle glides faster, but with a constant speed propeller ( sight picture ) to achieve this Champ, a! Citabrias were also popular as trainersbecause of their conventional gear airplane which production! The AEIO-360-H1B, along with a constant speed propeller last edited on 4 November 2022 at... To want to re-establish, maintain altitude, reduce power but maintain altitude ; heavier. They & # x27 ; re located in Rochester, Wisconsin ( 262-534-6315 ), on. Excellent handling and benign stalling characteristics prototype in May 1964 float on landing gliding in air. 21Tail #: Demonstrated Crosswind Component: 17 kts than a few grunts give the of... I also know there is a fly-for-fun airplane drag curve back to the Aeronca Champ... Options, then try again, carburetor equipped engine do any of you happen to know glide!