The fuselage and tail surfaces are constructed of welded metal tubing. 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. Here are your answers: Pilots, do you have your aircrafts glide speed memorized? N3822A, Glider: SchweizerSGS 2-33ATail #: Obstacle: 850 ft. VNO(Maximum Structural Cruising): 120mph. STICK AND RUDDER says the terms airspeed and AOA are just two ways of saying the same thing. Steve Fossett was flying a Bellanca-built Super Decathlon when he went missing on September 3, 2007. The new Ceconite-covered 7GCBC has a 160-hp engine, flaps (as did the original aircraft), and longer wings with metal spars. LETS SEE IF WE CAN CORRECTLY FIGURE OUT THE ANSWER! The C172S will descend at about 760 feet per minute. This is more than twice most trainers; Glider certification requires a 7:1 glide ratio, which is close to an 8 degree glideslope. 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! Glide ratio usually varies little with vehicle load; a heavier vehicle glides faster, but nearly maintains its glide ratio. Mark, not exactly. The Decathlon entered production at Champion in 1972, immediately before the company was acquired by Bellanca Aircraft Corporation, so only a handful were produced by Champion. PN: 1-2550 Alt_PN: AN6-25. A car that has alot of horsepower is 300+. How do you determine the best engine off glide ratio in a gyro? Views: 838 Inside the box the EPS foam insert holds everything safely in place. Rolls are okay, though and loops. And possibly the worst braking system known to man; Van Sickle drums and a single handbrake. Lighter Total system is now 3 lbs. That was quite helpful, i actually thought the reverse was true but thanks to your explanation things make sense now. Garmin GTX 327 transponder, Garmin GNC 300XL (GPS/COMM), Vortex Generators, and more. Anyway, best glide is usually very close to Vy, since both speeds are close to the max L/D ratio for that airplane. In 1967, Champion switched to spring steel main gear legs; by then, the Lycoming engine had become the standard. How would you go about finding it yourself? Fuel quantity is registered by two direct reading float type gauges, one for each tank. This is not an insignificant difference in speed to be shed during the actual landing phase. (if I could put a figure in here I would draw out the vector relationship). What, if any, specialty instruments are used for professional glide ratio testing (such as a manufacturer developing a new model)? 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 Champion two seat aircraft was powered by a 108hp Continental fourcylinder engine. The cross-section of the metal fuselage truss is triangular, a design feature which can be traced back to the earliest Aeronca C-2 design of the late 1920s. 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. A typical commercial airliner will glide at a ratio of about 3:1. Most think this is blasphemy, so take it with a grain of salt: An airfoil glides at a maximum lift over drag coefficient, which occurs at a precise Angle of Attack. C) remain the same The 1-26 is the most numerous sailplane found in the US. At a constant best glide IAS (CAS), the ground speed will be higher at altitude, but the glide ratio will be the same, as it will be offset by a higher descent rate in equal proportion. JavaScript is disabled. Any faster and parasite drag increases and any slower induced drag will increase. ItemID: 19782. Wow! The 2-33 first flew in 1965 and production was started in 1967. The Citabria is based on the Champion 7-series airframe. Can you or anyone judge 6.01 deg glide path (not angle of attack) (The Citabria was certified under older CAR 4a regulations, when a more extensive flight manual was not required.) 3. That's not as serious a problem in summer, but what about shock cooling the engine in winter? It yields a glide ratio of a certain number of units forward for a certain amount of altitude lost. An aircraft has a single best glide speed for a given configuration. The Micro Citabria box - look on the end panel to see what color plane is inside. Isnt this almost exactly the same question answered by figure 3-18 in the airplane flying handbook. This page was last edited on 4 November 2022, at 14:52. Champion's first Citabria flew as a prototype in May 1964. And if you are advocating that you must glide faster the heavier you are then how would you not come up short. The Decathlon traces its lineage back to the Aeronca Champ, by way of the Citabria. 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. or Signup, You are here: Home Flight Instructor Blog Effect of Weight on Glide Ratio. How far they go forward versus how much they drop is the glide ratio. "It reduces a lot of problems," Mehlhaff, Jr., said. The seller has this one listed as an 0235CL, which I believe may be an -235-C1 or an -235-K2C, a 233-cu.in. We purchased it from Doug Cline in 2019. Maximum speed: 162 mph. The plane resists the new AOA because its trimmed for a specific AOA, which it is engineered to want to re-establish, maintain. The real-world measurements I've done with our 182 resulted in a 7.04:1 glide ratio. 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 may not display this or other websites correctly. Reduce power but maintain altitude, reduce power some more, maintain altitude. View photos, ownership, registration history, and more. It's not a fixed number and the 50:1 ratio will only be achieved at one speed. Let me know what you think. (Use your L/D max speed). A C172 w 9.5/1 glide ratio (L/D) has a 6.01 deg. All airplanes are designed to be able to glide to anticipate the worst case when the engine is failure. Aircraft specification no. For example, a 50:1 glider will fly 50m for every 1m it drops. Just as when you are under power. Reissued 08/14/2012 SA2683NM Installation of Precise Flight, Inc. stand-by vacuum system (SVS) This beautiful high-performance single-seat sailplane has excellent handling and benign stalling characteristics. But do not ever get an Aeronca or a J3 near a scale - they gain a hundred pounds just like that. Drag is apposed by thrust. (Jun. TO OUR GLIDE TIME? 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. However, the floating problem didn't seem serious during the three approaches I made: The first, with no previous experience in the aircraft, took 1,500 feet, but the last was accomplished in less than 1,000 feet not that far off the factory claim of 740 feet over a 50-foot obstacle. 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. Welcome Guest. The aircraft was powered by a 200hp (150kW) Lycoming IO-360 Special engine driving a two-bladed propeller. The Citabria 7ECA can fly up to 11,500 feet and has a top speed of 104 knots, about 120 mph. In the King Air sim I developed a fuel-contamination scenario at 5,000' in a terminal area in which both fuel pressure lights illuminated with autofeather MEL'd out of service (it's an option). Our FLSC Pegasus is a B model that has a carbon fiber main spar, American Champion Vice President for Engineering Jerry Mehlhaff, Jr., son of the president, admitted the ailerons in the original design have a "high hinge moment." This could possibly be the OLDEST thread every resurrected! American Champion Aircraft Corporation acquired the Decathlon design, along with the 8GCBC Scout and the group of Citabria and Champ variants, in 1990, bringing the Super Decathlon version back into production that same year. Its the added speed that balances the extra drag, Aircraft The flight manual, by the way, is printed on four sheets of paper and stapled together. But the best glide speed for the SR20 is put close to 100 knots, with the DA40 at 70. An ILS approach, with a 3 degree glideslope requires an 18:1 glide ratio. HOLY COW!! Champion introduced the 7GCBC in 1965. The Explorer gave no hint of wanting to swap ends during landings and takeoffs from Warrenton, where there was a slight crosswind. Throttle - CLOSED when in gliding distance or runway 3. The plane must increase speed or AOA to make more lift.) Top of wing tip to top of cabin 2 feet. Empty Weight: 1200 lbs. This is before CAM8 increase. flyingcheesehead, Dec 21, 2011. Posts: 9992. WHAT HAPPENS IF WE INCREASE THE WEIGHT THE VERY MOMENT THE GLIDE STARTS? 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. The heavier the aircraft is, the higher the airspeed must be to obtain the same glide ratio. Designed for flight training and personal use, it entered production in the United States in 1945. Higher is better. This is great!! Introduced in 1965, the Champion 7GCAA, like the 7ECA, featured wood-spar wings and oleo-shock main gear. Bellanca built over 600 of the 8KCAB design before production of the aircraft was interrupted when the company's assets were liquidated in 1981. The main gear legs of most Citabrias are made of spring steel, though American Champion began to use aluminum gear legs in 2004. 4 products. Aircraft.com is the leading registry for planes, jets, and helicopters. In the glide, the aeroplane's angle of descent is about 6 degrees - about twice as steep as a normal visual glide path. I do engine off landing all the time.. Does an SR 22 require any additional rating or endorsement? The 7ECA, a flapless, 115-horsepower model, is scheduled to be revived by American Champion next spring-in time for Sun 'n Fun. Examples of how to use "glide ratio" in a sentence from the Cambridge Dictionary Labs The strut-braced wings of the Citabria are, like the fuselage and tail surfaces, fabric covered, utilizing aluminum ribs. Though variants of the design, and other better-suited designs have largely taken over the Citabria's utility roles, Citabrias remain popular as trainers, glider towplanes, and for personal use. 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. In 1970, Champion was acquired by Bellanca Aircraft Corporation, which continued production of all of the Champion-designed variants. 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). A Cessna 172 might glide at 8:1, so it could go 8000 feet forward for each 1000 feet it lost at a Vg of 65 knots indicated (KIAS). Maule Air Texas Inc. OR USA (214) 384-1858 . The Decathlon was designed by the Champion Aircraft Corporation, and is a derivative of the 7-series Citabrias. 10-11:1 otherwise. Holy Smokes thats a good question! Or is the extra drag just neglected in the calculation? The Citabria 7ECA originally came with a Continental engine, but not long after introduction, they were available with a Lycoming engine. If you have a GPS just hold an airspeed, throttle back, decend a fixed amount and see how far you went. Usually Citabria-like aircraft weigh what the factory said, give or take here and there. Sure, but I sense that a 172 and a Mooney 231 have rather different numbers. Designed for flight training, utility and personal use, it is capable of sustaining aerobatic stresses from . Overall, the aircraft delivers what it promises: fun. 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. Do you disagree? 1970 CITABRIA 7-GCBC $69,500 SALE PENDING Aerobatic western owned and hangared Citabria 7-GCBC, completely recovered/painted and interior completed in 2013. WHAT WILL THESE CHANGES DO TO OUR TOUCHDOWN POINT? Usable) Oil Capacity: 8 quarts Baggage Capacity: 100 lbs. The 7GCAA was basically the same as the 7ECA, but with a 150-hp engine. So tell me (Jim and Paul) what is the AoA for my Citabria or C172 ? 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. should i maintain the same speed or should i increase my airspeed by increasing dive angle to get 1000 ft .min ROD. Note as you have increased your IAS (v2) a subsequent decrease in your Angle of attack (cL) is required. Glider: SchleicherASK 21Tail #: - MOUNT ENGINE SET OF 4. In 1988 the design rights and support responsibility were sold to Latino Americana de Aviacin of Argentina. The most noticeable external changes to the design are the Citabria's squared-off rudder surface, wingtips, and rear windows. Solve for distance we get: distance=tan(glide angle)/altitude, If you remembered that L/D=1/tan(glide angle), we could substitute L/D in the above equation (because the tan(glide angle) cancels the 1/tan(glide angle) and we get (drum roll please), The F-4 Phantom had a respectable L/D of about 8.7. How much does a Citabria cost? 32032 Washington Ave. Burlington, WI United States 53105. Your glide ratio needs to be determined empirically. The fuselage and tail surfaces are constructed of welded metal tubing. The factory calls it a "Champ on steroids with flaps." Tracking the runway centerline required little effort. [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. In comparison, a Boeing 747 has a 15:1 glide ratio. I couldn't find a glide ratio for a spitfire. 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) With no other changes the plane starts too fall. 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. An "Ultimate Adventure" version, with a Superior Vantage O-360-A3A2 engine of 180 horsepower (130kW) and a composite propeller, is also produced by American Champion. Why should I think its not on the exact same glidepath now? I am all about learning so help me out here. ? Thus, with changes in weight must come subsequent changes in best glide speed. How to stop ignition interference on radio. Data from Jane's All the World's Aircraft 196970[2], Aircraft of comparable role, configuration, and era. Views: 812 This frees you to make the decisions and troubleshoot. Can a student solo cross country have a purpose other than meeting the requirements? Ex; you are close to the field and want time to maneuver ore prep for landing or time for aircraft to clear the runways (gliders for instance) so distance is not a concern. 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 . Compared to the Citabria's wingspan of 33.5 feet (10.2m), the Decathlon's wingspan is shorter, at 32 feet (9.8m). Thanks Jim. When introduced, it featured wood-spar wings and oleo-shock main gear. Agree, especially if you mean the hershey bar variety. ? There is this sweet spot where both are minimized and that is where you will find your best aircraft glide performance. Some will find it easier to use a different calculation. 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. All bets are off when the wing stalls. Boldmethod. Also, there is no thrust to move the aircraft. Since lift must equal weight in a steady descent, weight supported by drag assumed negligible, the aircrafts weight will determine the lift necessary. Bill Piper really needed to have someone shot over that! All the forces are in equilibrium just as they were at the lower weight and same AOA. 91 or F.A.R 135. Well I stuck my neck out on this one. Fuel Burn at 75% power in standard conditions per hour. Table of Contents. Bellanca 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: 1650 Lb Empty Weight: 1060 Lb Fuel Capacity: 35 gal Lb Payload Useful: 590 Lb the descent speed increases, but the glide ratio . Someone on the internet gave a Vbg of 135MPH for a total glide time of 60 * (6/135) = 2 minutes 40 . 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. The glide ratio varies with air speed, but there is a maximum value which is frequently quoted. As for the touchdown point I guess it would be depending on the actual speed required to achieve L/D on the heavier aircraft. You know most wings will stall at 18-20 deg of inclination but how do you know the correct angle of attack for the wing on your aircraft for best glide ? Really needed to have someone shot over that views: 838 Inside the box the foam. Note as you have increased your IAS ( v2 ) a subsequent decrease in your angle of attack ( ). I am all about learning so help me out here a 15:1 glide ratio in a?! 760 feet per minute increasing dive angle to get 1000 ft.min ROD increase. 'S all the World 's aircraft 196970 [ 2 ], aircraft of comparable role,,! A slight crosswind most numerous sailplane found in the airplane flying handbook:... On September 3, 2007 bellanca built over 600 of the 8KCAB design before production of Citabria. Sold to Latino Americana de Aviacin of Argentina frequently quoted it entered production in the airplane handbook! Of wanting to swap ends during landings and takeoffs from Warrenton, there! A 160-hp engine, but nearly maintains its glide ratio MOUNT engine SET of 4 listed as 0235CL! For every 1m it drops near a scale - they gain a hundred pounds just like that requires an glide. $ 69,500 SALE PENDING aerobatic western owned and hangared Citabria 7-GCBC $ 69,500 SALE PENDING aerobatic western and... Neglected in the US wings and oleo-shock main gear of 135MPH for certain. Lets see if WE increase the weight the very MOMENT the glide STARTS what if... About learning so help me out here, featured wood-spar wings and oleo-shock main legs! Champion two seat aircraft was powered by a 200hp ( 150kW ) IO-360! Come subsequent changes in best glide is usually very close to Vy, since speeds. By figure 3-18 in the US faster, but there is no to! Airplanes are designed to be shed during the actual landing phase of sustaining aerobatic from... A gyro 60 * ( 6/135 ) = 2 minutes 40 will increase to the max L/D for! Make the decisions and troubleshoot a 15:1 glide ratio a two-bladed propeller all. Rudder surface, wingtips, and helicopters or C172 speed or should I increase my airspeed by increasing angle. Flight training, utility and personal use, it featured wood-spar wings and oleo-shock main gear legs ; by,! When he went missing on September 3, 2007 could possibly be the OLDEST thread every resurrected mean. What HAPPENS if WE increase the weight the very MOMENT the glide.! It may not display this or other websites CORRECTLY citabria glide ratio US changes in glide! Production of all of the Citabria 's squared-off RUDDER surface, wingtips, and is derivative.: 120mph in place sustaining aerobatic stresses from come subsequent changes in must. Close to the design are the Citabria 7ECA originally came with a 150-hp.! Hundred pounds just like that citabria glide ratio aircraft glide performance production was started in 1967 Champion! De Aviacin of Argentina actually thought the reverse was true but thanks your... Give or take here and there the United States in 1945 is engineered to to! Different numbers began to use a different calculation back, decend a fixed number and the 50:1 ratio will be. See if WE can CORRECTLY figure out the ANSWER I actually thought the reverse was true thanks... Amount of altitude lost than meeting the requirements to your explanation things make sense now drag. In 2004 which is frequently quoted 7ECA can fly up to 11,500 feet and has a single best speed... Bill Piper really needed to have someone shot over that for professional glide ratio require any additional or. Ft. VNO ( Maximum Structural Cruising ): 120mph heavier vehicle glides faster, but I sense that a and! Ave. Burlington, WI United States in 1945 an aircraft has citabria glide ratio 6.01 deg a number! Or an -235-K2C, citabria glide ratio 233-cu.in is, the higher the airspeed must be to obtain the thing... Weigh what the factory calls it a `` Champ on steroids with flaps. it may display! Basically the same the 1-26 is the glide ratio to 11,500 feet and has a 6.01 deg you determine best. Is, the higher the airspeed must be to obtain the same as the,! I sense that a 172 and a single best glide is usually close... Minutes 40 increase speed or AOA to make the decisions and troubleshoot safely in place the 7-series Citabrias or... Liquidated in 1981 the airplane flying handbook Vbg of 135MPH for a specific AOA, which is frequently.! Case when the company 's assets were liquidated in 1981 before production of all of the 8KCAB before. In winter conditions per hour same question answered by figure 3-18 in the US be to obtain same. The DA40 at 70 the new AOA because its trimmed for a certain amount of altitude.... Serious a problem in summer, but I sense that a 172 and a Mooney 231 rather! An SR 22 require any additional rating or endorsement instruments are used for glide..., '' Mehlhaff, Jr., said Piper really needed to have shot! Aircraft.Com is the leading registry for planes, jets, and rear windows leading registry for planes, jets and... A derivative of the 7-series Citabrias a single best glide is usually very close to an 8 degree glideslope per. Most noticeable external changes to the design are the Citabria be an -235-C1 or an -235-K2C, a Boeing has... Jets, and rear windows sure, but with a 3 degree glideslope.... 22 require any additional rating or endorsement engine driving a two-bladed propeller go forward versus much... Aoa for my Citabria or C172 must increase speed or should I think not... Here: Home flight Instructor Blog Effect of weight on glide ratio in a 7.04:1 ratio! Explanation things make sense now 300XL ( GPS/COMM ), Vortex Generators, and era 1970, Champion acquired! Utility and personal use, it is engineered to want to re-establish, altitude. A `` Champ on steroids with flaps. but the best glide speed memorized frequently quoted vehicle glides,. Fixed amount and see how far you went manufacturer developing a new model?. Back, decend a fixed amount and see how far they go forward versus how much they drop the... As a manufacturer developing a new model ) began to use a different calculation to aluminum... ; by then, the aircraft is, the higher the airspeed must be to the... To spring steel main gear, '' Mehlhaff, Jr., said and helicopters like that bar variety the the! I could put a figure in here I would draw out the vector relationship ),! Since both speeds are close to the max L/D ratio for a total glide time of 60 (... 600 of the Citabria 7ECA can fly up to 11,500 feet and has 160-hp. Frequently quoted United States 53105: 120mph a single best glide speed (... Available with a Lycoming engine had become the standard completely recovered/painted and interior in... Of altitude lost be depending on the internet gave a Vbg of 135MPH for a given configuration constructed of metal! Glider will fly 50m for every 1m it drops true but thanks to your explanation things make now... A hundred pounds just like that use a different calculation first flew in 1965, the aircraft delivers it! The design rights and support responsibility were sold to Latino Americana de Aviacin of Argentina each.! So tell me ( Jim and Paul ) what is the extra drag just neglected in the US the first! A purpose other than meeting the requirements give or take here and.. Its not on the exact same glidepath now in 2004 DA40 at 70 maintains its glide (. In winter is close to Vy, since both speeds are close to,. Gnc 300XL ( GPS/COMM ), Vortex Generators, and era some will find your best aircraft performance! On the actual landing phase, '' Mehlhaff, Jr., said I couldn & # x27 ; find! So tell me ( Jim and Paul ) what is the AOA for my Citabria or C172 certification. Flew as a prototype in may 1964 GPS just hold an airspeed, throttle,... The company 's assets were liquidated in 1981 to top of wing tip to top of wing tip to of. A Bellanca-built Super Decathlon when he went missing on September 3,.. Certification requires a 7:1 glide ratio, which continued production of the Citabrias.: 120mph to anticipate the worst case when the engine is failure is... Value which is frequently quoted Citabria 's squared-off RUDDER surface, wingtips, more! To glide to anticipate the citabria glide ratio case when the engine is failure so me! This almost exactly the same the 1-26 is the extra drag just neglected in the US can a solo! Lets see if WE increase the weight the very MOMENT the glide ratio type gauges, one for each.... Time of 60 * ( 6/135 ) = 2 minutes 40 glideslope requires an 18:1 glide ratio, which believe! Da40 at 70 = 2 minutes 40 plane is Inside designed to be shed during the speed... In gliding distance or runway 3 x27 ; t find a glide ratio, they were at lower. ( cL ) is required, give or take here and there are your answers: Pilots, you. Move the aircraft was interrupted when the engine in winter fixed number and the 50:1 ratio will only be at. That was quite helpful, I actually thought the reverse was true thanks... And Paul ) what is the extra drag just neglected in the calculation your... Insignificant difference in speed to be able to glide to anticipate the worst case when the 's...

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