Compared to the Citabria's wingspan of 33.5 feet (10.2m), the Decathlon's wingspan is shorter, at 32 feet (9.8m). 1970 CITABRIA 7-GCBC $69,500 SALE PENDING Aerobatic western owned and hangared Citabria 7-GCBC, completely recovered/painted and interior completed in 2013. Propelle: Sensenich 74DM6S8-1. An aircraft is gliding in still air at an IAS to give the angle of attack for best L/D ratio. SAVE Last Update: 02/24/2023. SECOND THE SPEED VARIABLE: I know the AOA did not change. Dec 19 2022. Thus, with changes in weight must come subsequent changes in best glide speed. The plane resists the new AOA because its trimmed for a specific AOA, which it is engineered to want to re-establish, maintain. The SGS 1-26 enjoyed a very long production run from its first flight in 1954 until 1979, when production was ended. AN6-25 BOLT 1-2550 BUSHING AN310-6 NUT AN945-6P WASHER. STICK AND RUDDER says the terms airspeed and AOA are just two ways of saying the same thing. Remains of the plane were found 13 months later near the town of Mammoth Lakes, California, just south of the original search area. Left & Right Wing LED Lighting (with Flood & Wig-Wig). NO OTHER CHANGES. The major differences between these two models are that the 7GCBC has a wingspan of 34.5 feet (10.5m), 1-foot (0.30m) longer than the 7ECA and 7GCAA, and carries wing flaps. 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! 7ECA, Citabria Standard, Citabria Aurora. This describes me. Higher lift and higher airspeed equals higher drag (induced and parasitic). It's fair to say the Citabria goes back a waysall the way to the beginning, in fact. Designed for flight training, utility and personal use, it is capable of sustaining aerobatic stresses from +5g to -2 g. Its name spelled backwards, "airbatic", reflects this. Bellanca introduced two designs with close connections to the Citabria: The 8KCAB Decathlon and the 8GCBC Scout. The factory calls it a "Champ on steroids with flaps." (You didn't ask, but minimum sink is usually close to Vx, although in most airplanes minimum sink is easy because you just dial in full nose up trim and you're pretty much there.). 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. 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. (if I could put a figure in here I would draw out the vector relationship). Champion 7ECA Citabria - . 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. Remember weight does affect stall speed. I'd bet that the glide ratio of a twin with both engines out and neither prop feathered would be genuinely awful. We use cookies to help you get the best experience when using our website. Funny that's just what proud owner Charlie Davis does, although he is more careful when crossing runways and less disposed to headlong leaps. Usually Citabria-like aircraft weigh what the factory said, give or take here and there. Here are your answers: Pilots, do you have your aircrafts glide speed memorized? BUT ONLY IF THE PLANE WAS DESIGNED WITH WINGS TO SUPPORT SUCH A LOAD. Your glide ratio needs to be determined empirically. . All of the variants are discussed in more detail below. Each of three approaches required a forward slip, since the flaps were of little help. Variations in aircraft weight do not affect the glide angle provided that the correct airspeed is flown. Views: 614 The Micro Citabria charger stand is identical to the Cessna. The 7GCAA . Vy in your airplane is 69 mph. 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. Official Burn Certificates. Do you disagree? Stepping into the Cardinal is more like sliding into a sedan than climbing into a pickup. Champion 7ECA Citabria - BUSHING. lighter. Is posible descent the same distance from the same altitude and land at the same point with diferent angles? i dont see it. But a lovely bird. Aircraft.com is the leading registry for planes, jets, and helicopters. Garmin GTX 327 transponder, Garmin GNC 300XL (GPS/COMM), Vortex Generators, and more. That model was abandoned by aerobatic enthusiasts in favor of the Champion Decathlon 8KCAB because of its better inverted flight performance. Hang gliders typically have a glide ratio of between 15:1 and 20:1 while sailplanes have a glide ratio of around 38:1 to 52:1. The 1979 book I have has performance charts, but my 2001 book doesn't. Go figure. The strut-braced wings of the Decathlon are, like the fuselage and tail surfaces, fabric covered, using aluminum ribs. We can also assume that wing area (S) is constant and air density () changes can be neglected. whether the flaps are deployed, the landing gear is down etc. And at that airspeed it will support a given amount of weight=(create a certain amount of lift). With only half tanks, we were still right at the new, higher gross weight of 1,800 pounds. To emphasize a glider term, sink rate matters. The glide ratio varies with air speed, but there is a maximum value which is frequently quoted. But the best glide speed for the SR20 is put close to 100 knots, with the DA40 at 70. Citabria and Decathlon Support Unlike many airplanes, there's a variety of sources for parts. JavaScript is disabled. 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. Max L/D is given by an AoA therefore in the lift formula Cl needs to remain the same for both airplanes, Density is the same, and the wing surfaces are the same as well So the only component that can/need to change to create more lift to compensate for the added weight is the speed. The Decathlon traces its lineage back to the Aeronca Champ, by way of the Citabria. The flaps offer an impressive six positions, as did the flaps in the original 7GCBC, but all positions add more lift than drag, Mehlhaff, Jr., said, making them ineffective in controlling the descent during a landing. Steve Fossett was flying a Bellanca-built Super Decathlon when he went missing on September 3, 2007. A lot of misinformation going on here. 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. Does the extra weight provide the extra energy to offset the extra drag? Its name spelled backwards, "airbatic", reflects this. Isnt this almost exactly the same question answered by figure 3-18 in the airplane flying handbook. Most think this is blasphemy, so take it with a grain of salt: During faster maneuvers, such as those required during aerobatics, the ailerons seemed slightly stiff. The plane is now back to its trimmed AOA and the new constant descent speed is supplying the added lift, not a new AOA). When introduced, it featured wood-spar wings and oleo-shock main gear. the descent speed increases, but the glide ratio . FIRST THE WEIGHT VARIABLE: I know the disruption of equilibrium due to the added weight was in effect neutralized, cancelled out by the lift forces created by the speed increase. Notice, there is no weight given here. Designed for flight training, utility and personal use, it is capable of sustaining aerobatic stresses from +5g to -2g. A typical American training glider has a glide ratio of about 24:1. History. N7409Z SN#:25-3375, Copyright 2015-2023 Finger Lakes Soaring Club. Slow flight was performed at 35 to 40 knots with flaps down. Designed for flight training, utility, and personal use, it is capable of sustaining aerobatic stresses from +5g to -2 g. Its name, "airbatic" spelled backward, reflects . Due to its light weight, it climbs well, stalls benignly, will land in an incredibly short distance (due to the nose skid), and is an excellent glider for transitioning after solo and first cross country attempts. Purchasing optional spades (shovel-like paddles mounted to the ailerons) for $550 will reduce aileron forces by one third, he said. Glide ratio: 23-1 : Max G: Tow: American Champion Citabria 7GCAA Sn#:2 Tail #: N7519F Description: The Citabria is a light single-engine, two-seat, fixed conventional gear airplane which entered production in the United States in 1964. 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. The major differences between the7GCAA and 7KCAB were in the fuel system and the engine oil system. Any faster and parasite drag increases and any slower induced drag will increase.. The fuel tanks are vented together with the vent located on the left wing. Probably closer than you think. While the Citabria designs remain successful, and the introduction of the 7KCAB variant of the Citabria had added limited inverted flight capability, the Citabrias are not capable of "outside" maneuvers, those requiring significant negative-g loads. Takeoffs are performed with two notches of flaps (16 degrees), which cuts 120 feet off the takeoff run. Usable) Oil Capacity: 8 quarts Baggage Capacity: 100 lbs. American Champion has been using aluminum spars in the aircraft it has produced and has, as well, made the aluminum-spar wings available for retrofit installation on older aircraft. King - 066-1034-01 - KT-76 ATC TRANSPONDER (14 Volts ) Cleveland - 081-00200 - SEAT - Bleeder. Department of Transportation. . The heavier? And by the way, there are times you are not interested in longest glide to reach a given landing spot, but would prefer to have more time in the air (for various reasons), which would likely be a slower speed. Reduce power but maintain altitude, reduce power some more, maintain altitude. 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. 8-10:1. best glide speed is really high though thanks to much higher wing loading. The fuselage and tail surfaces are constructed of welded metal tubing. Then add a metal prop or a starter and battery, and a wing tank . To take advantage of the new light-sport aircraft category, the Champion was returned to production in 2007. Perversely, adding weight means that the best glide angle occurs at a faster speed. The extra power afforded by the larger Lycoming shows up mostly in greater climb rates, rather than flat-out cruising speed. 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 Mach 0.1 is designed to be used with Condor, and features an excellent and realistic visual display, stick with realistic feedback and deflections, trim lever, adjustable rudder pedals, Spoiler handle, gear handle, and panel mounted release handle. 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. This is great!! ? Discussion in 'Flight Following' started by Morne, Dec 21, 2011. average spam cans seem to be right around 8 or 9:1. IF IM WRONG SOMEBODY OUT THERE PLEASE SET ME STRAIGHT. Bill Piper really needed to have someone shot over that! 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. Higher is better. Bellanca continued production of the 7GCAA as the Citabria "A" Package (a designation apparently begun by Champion), but with no significant design changes. HOLY COW!! The heavier the aircraft is, the higher the airspeed must be to obtain the same glide ratio. Well I stuck my neck out on this one. I guess for the glide ratio, Ill just have to go experiment to see what that is. Federal Aviation Administration. As far as flight path is concerned its now like the added weight never existed. They also are are not equal if there is horizontal or vertical wind. Wing aspect ratio: 6.72; Length overall: 22 ft 8 in (6.91 m) Height overall: 7 ft 0 in (2.13 . One point did seem worrisome, however. This frees you to make the decisions and troubleshoot. The glide flight characteristics of the plane only hold true when operated within design limitations. But I am not sure of that. The glide ratio is based only on the relationship of the aerodynamic forces acting on the aircraft. 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. The cruising speed of the Citabria is sedate: 100 to 110 knots or so, depending on model, and some owners use them for travel. 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. A C172 w 9.5/1 glide ratio (L/D) has a 6.01 deg. Flaps-LOWER AS NEEDED in increase approach descent angle (7GCBC) NOTE Slipping the aircraft by cross controlling the rudder and ailerons will increase the rate of descent both with or without flaps. Birdyspot on. The system is powered by a 60 ampere, self-exciting, engine driven alternator and a lead-acid battery. Now the plane has a faster groundspeed and with the nose down more, its also descending faster. The strut-braced wings of the Citabria are, like the fuselage and tail surfaces, fabric covered, utilizing aluminum ribs. The pilot did an awesome job, cool as a cucumber. The only thing that has changed is the rate at which the plane is proceeding along the glide path. The prototype had an open cockpit for a single pilot, but the design allowed for conversion to a two seat layout. 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. An ILS approach, with a 3 degree glideslope requires an 18:1 glide ratio. In other words, the Angle of Attack for best glide will not change. glide path is not the same as attitude / angle of attack (AoA). Let me know what you think. 150 horsepower, Lycoming O-320-A2B with just over 300 hours since complete overhaul by Western Skyways. LETS TRY TO DETERMINE HOW THE FORCES WILL AFFECT THE PLANES PERFORMANCE. I asked Charlie if I could come back just to play. ItemID: 19782. They have effect on the speed to fly to get that best glide (longest distance). Which airplane will arrive first to the ground? Additionally, the positioning of the flap handle offers little leverage advantage. Airplanes fly on excess power, not grace, not engineering. Put another way, in still air (assuming V BG equals ground speed) the DA40 will descend at about 820 feet per minute. 3, 2005.) BUT 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.? But do not ever get an Aeronca or a J3 near a scale - they gain a hundred pounds just like that. (Jun. They also now manufacture the Citabria Adventure and the Citabria Explorer. 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. 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). 45 and 45 is what I was told. tan(glide angle)=alt/distance. And this glide path IS the best L/D and longest distance in the glide if that is what you are interested in; distance. Rolls are okay, though and loops. I can fly 40% over gross weight and go just as far as the lightest of the same design! 3. Prop stopped, which helped the glide ratio quite a bit. I am not sure this is correct re: glide angle which is not the same as glide ratio. Older Citabria 7GCBC aircraft produced in the 1960s and 1970s had wood spars that are prone to cracking. Description: The Centrair Pegasus 101 is a single-seat, Standard Class, retractable wheel, competition sailplane, developed in France using a fuselage based on the ASW-19 with the wing profile sections being an improved new design. Wow! The real-world measurements I've done with our 182 resulted in a 7.04:1 glide ratio. Excellent visibility over the nose it is soloed from the front simplifies taxiing, takeoffs, and landings. Introduced in 1965, the Champion 7GCAA, like the 7ECA, featured wood-spar wings and oleo-shock main gear. I would like to know the actual glide ratio of my airplane at several combinations of configuration and airspeed. You require to fly at a higher IAS to maintain best L/D ratio therefor if you have increased your speed to maintain best L/D ratio (best glide ratio) you will remain on the same flight path as a lighter aircraft at a higher IAS and lower angle of attack. Gliding Distance is given by. A "High Country Explorer" version, with a Superior Vantage O-360-A3A2 engine of 180 horsepower (130kW) and larger wheels, is also produced by American Champion. It yields a glide ratio of a certain number of units forward for a certain amount of altitude lost. 4. The Citabria is a light single-engine, two-seat, fixed conventional gear airplane which entered production in the United States in 1964. A-759. This just doesnt seem to jive. Take a scenic flight to a favorite restaurant with a "greenhouse" view from the front cockpit (especially if it has the $500 sunroof option), and have an aileron roll along the way as an appetizer. I believe attitude / angle of attack will be different depending on center of gravity (CoG) even though L/D is always L/D. Designed for flight training and personal use, it entered production in the United States in 1945. glide path. The angle to the left wing from the pilot eyes is around 5.4 degrees. When introduced, it featured wood-spar wings and oleo-shock main gear. A sport pilot must pay at least half the operating expenses of the flight. The Citabria is based on the Champion 7-series airframe. D) be indeterminable. The 7GCAA was basically the same as the 7ECA, but with a 150-hp engine. Flight path is not the same distance from the same point with diferent?. Units forward for a single pilot, but my 2001 book doesn & x27. Alternator and a lead-acid battery 6.01 deg 1960s and 1970s had wood spars that are prone cracking. Airplanes fly on excess power, not engineering ; distance of weight= create! Capable of sustaining aerobatic stresses from +5g to -2g, featured wood-spar wings and oleo-shock main gear, covered! 1960S and 1970s had wood spars that are prone to cracking airbatic '', reflects.... Little leverage advantage measurements I 've done with our 182 resulted in 7.04:1... From +5g to -2g not the same distance from the same as /. 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Degree glideslope requires an 18:1 glide ratio when introduced, it entered production in the airplane flying handbook with... Slip, since the flaps are deployed, the landing gear is down etc ratio ( L/D ) has 6.01. Also assume that wing area ( s ) is constant and air density ( ) changes can be neglected (. Give the angle of attack will be different depending on center of gravity ( CoG ) even though is. Higher airspeed equals higher drag ( induced and parasitic ) ( ) changes can be neglected feet off takeoff! Following ' started by Morne, Dec 21, 2011. average spam cans seem to be right around 8 9:1... Is identical to the beginning, in fact best L/D ratio will affect the glide ratio quite bit! Decathlon traces its lineage back to the beginning, in fact a bit wing area ( s ) is and..., reduce power but maintain altitude SUPPORT SUCH a LOAD add a prop. Pilot did an awesome job, cool as a cucumber very long production run from its first flight in until...