Aircraft weight, air density (e.g. 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. So if I were at 10000 feet and lost all my engines, I could expect to glide about 30 miles. American Champion Aircraft Corporation acquired the Citabria, Decathlon, and Scout designs in 1989 and returned the 7ECA, 7GCAA, and 7GCBC models to production over a period of years. The 7GCAA and 7GCBC variants, added in 1965, were joined by the 7KCAB in 1968. That model was abandoned by aerobatic enthusiasts in favor of the Champion Decathlon 8KCAB because of its better inverted flight performance. lots of first timers I've taken flying have been amazed at the low HP of airplanes. The winds would have to be factored in as well. But the best glide speed for the SR20 is put close to 100 knots, with the DA40 at 70. 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 aircraft was powered by a 200hp (150kW) Lycoming IO-360 Special engine driving a two-bladed propeller. Locate a Dealer. Cruise speed: 126 mph. it only depends on its shape, and mostly on the shape of the wings, e.g. First and foremost, of course, is American Champion. I have a restricted category for my 7gcbc ('69 w/ wood wings) for crop dusting, it states 2300lbs gross. Yippee! 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.. 1970 CITABRIA 7-GCBC $69,500 SALE PENDING Aerobatic western owned and hangared Citabria 7-GCBC, completely recovered/painted and interior completed in 2013. The Citabria POH/AFM is a piece of junk, isn't it? To aid in getting down, it is recommended that power be reduced to idle opposite the point of intended touchdown. 14:1 means 14 km of distance per 1 km of altitude. Agree, especially if you mean the hershey bar variety. You can see the image damage at the end of the video. . Thus, with changes in weight must come subsequent changes in best glide speed. 4. 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 -2g. 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. 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. This speed is important as it represents the bottom of the drag curve. One of the major developments of the 8KCAB Decathlon over the 7KCAB Citabria is the Decathlon's wing, which employs a semi-symmetrical airfoil, as opposed to the Citabria's flat-bottomed airfoil. N7519F, Tow: PiperPA-25-235 PawneeTail #: Glide ratio usually varies little with vehicle load; a heavier vehicle glides faster, but nearly maintains its glide ratio. Any faster and parasite drag increases and any slower induced drag will increase.. But I am not sure of that. BUT This change gives the Decathlon better inverted flight and negative-g maneuver capabilities. In comparison, a Boeing 747 has a 15:1 glide ratio. Additionally, the positioning of the flap handle offers little leverage advantage. This describes me. If you have a GPS just hold an airspeed, throttle back, decend a fixed amount and see how far you went. What else should I plan for, in checking this? 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." 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 . N574KS, Glider: GrobG 102 Astir CSTail #: Its the added speed that balances the extra drag, Fuel Burn at 75% power in standard conditions per hour. lighter. Production history [ edit] The STC covers the replacement of the original early model oleo (Non spring gear) Citabria gear legs with PA-18 style gear legs and the addition of an adjustable bungee and air shock suspension system. Vref, the AOPA partner offering aircraft value estimates, suggests a base price for the Citabria 7GCBC of $28,000 for a 1970 model; $38,000 for a 1980 model; $48,000 for a 1994 model; and $63,000 for a 2000 model. rather than 7.01 or 5.01 ? During faster maneuvers, such as those required during aerobatics, the ailerons seemed slightly stiff. 91 or F.A.R 135. The glide flight characteristics of the plane only hold true when operated within design limitations. $145.00/hr. Coming from the automotive world, I'm grew up around Chevy 350's and today's engines. Weight opposes lift, it does not oppose drag. The cross-section of the metal fuselage truss is triangular, a design feature which can be traced all the way back to the earliest Aeronca C-2 design of the late 1920s. A&P Audio w/2 place intercom Narco MK12D Nav/Com VOR w/Glide Slope AI DG Narco Transponder Loran Fire Extinguisher Max weight: 1650 Useful Load:464 Empty . WHAT WILL THESE CHANGES DO TO OUR TOUCHDOWN POINT? The extra power afforded by the larger Lycoming shows up mostly in greater climb rates, rather than flat-out cruising speed. Its name spelled backwards, "airbatic", reflects this. 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 Citabria POH/AFM is a piece of junk, isn't it? It has a claimed maximum L/D = 41. I seem to recall something in the 421 manual saying that the no engine glide speed was well north of 120 mph. If the weight is reduced and the IAS held constant, the glide angle will: 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 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. Demonstrated Crosswind Component: 17 kts. Discussion in 'Flight Following' started by Diana, Mar 10, 2005. A modern German counterpart about 33:1. In addition, the carburetor was replaced with a fuel injection system, and a Christen Industries inverted oil system was fitted to the engine. 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. This could possibly be the OLDEST thread every resurrected! 2023 GlobalAir.com. It uses the CONDOR Soaring Software Program and is the same simulator used at the USAF Academy. Decathlons and Super Decathlons remain popular as aerobatic trainers, as beginning and intermediate aerobatic aircraft, and as personal aircraft. Landing Distance over 50-ft. The Citabria, great-great-great-grandchild of the Aeronca 7AC Champ, is a fly-for-fun airplane. Champion 7ECA Citabria - BUSHING. for approved maneuvers in the acrobatic category. 3, 2005.) A lot of misinformation going on here. View photos, ownership, registration history, and more. Bellanca introduced two designs with close connections to the Citabria: The 8KCAB Decathlon and the 8GCBC Scout. Citabria and Decathlon Support Unlike many airplanes, there's a variety of sources for parts. Drag is apposed by thrust. The plane resists the new AOA because its trimmed for a specific AOA, which it is engineered to want to re-establish, maintain. whether the flaps are deployed, the landing gear is down etc. Assume: XXXX lbs, alt.= 1mile agl, power is lost, you trim to 75 mph best glide speed (resulting in specific AOA), no wind, glide ratio 7.5/1 (resulting in a specific degree of glide slope to the touchdown point), touchdown distance 7.5 miles, glide time 6 minutes. Its production as a replacement for the Traveler began in August of the same year. Thanks Jim. The heavier the aircraft is, the higher the airspeed must be to obtain the same glide ratio. Daher Kodiak 100 Specifications. In the video link below (at 7min 8secs), a former F16 pilot says he "thinks the F16 has a glide ratio of 7 to 5, but they pitch for a 1:1, one mile for every thousand feet." But clearly the 1:1 is not the human body glide ratio of 1:1, it's 5280ft (one mile) divided by 1000ft altitude: glide ratio of 5.28 3. No answer. All bets are off when the wing stalls. The first Citabria came off the line in 1964 at Champion Aircraft in Oseola, Wisconsin, a company that was later bought by Bellanca. [2] It was never put into production at Champion nor by Bellanca which acquired the company and designs only a short time later. Let me know what you think. (Use your L/D max speed). Fuel Capacity: 36 gal. Well I stuck my neck out on this one. How far they go forward versus how much they drop is the glide ratio. 2022 Model SOLD OUT Lycoming O-320-B2B, 160 HP Engine Sensenich 74DM6S8-1-56 73" Aluminum Fixed Pitch Propeller. SPECIFICATIONS. Higher lift requires higher airspeed for same AOA. For a better experience, please enable JavaScript in your browser before proceeding. Aircraft: Citabria N990WY. The lift produced during the glide is not equal to weight, it is equal to weight times the cosine of the glide angle! Really ? [2] It was a parasol winged monoplane, with a revised wing section and a longer fuselage. That's not as serious a problem in summer, but what about shock cooling the engine in winter? Reissued 08/14/2012 SA2683NM Installation of Precise Flight, Inc. stand-by vacuum system (SVS) And this glide path IS the best L/D and longest distance in the glide if that is what you are interested in; distance. It is also certified for aerobatic flight. Both of them start a power off descent at the same time at the same position. Posts: 9992. 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. [2] He took off from an airstrip at William Barron Hilton's Flying-M Ranch, about 70 miles (110km) southeast of Reno, Nevada. AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -, 2023 Aircraft Owners and Pilots Association, Avg. ? . (And in case you have forgotten where the name Citabria came from, spell the headline backward.). Funny that's just what proud owner Charlie Davis does, although he is more careful when crossing runways and less disposed to headlong leaps. You can round 9.11418 down to 9.1. Yes, L/D is L/D always. Here are your answers: Pilots, do you have your aircrafts glide speed memorized? Find N57682 1973 BELLANCA CITABRIA 7GCBC on Aircraft.com. The flight manual, by the way, is printed on four sheets of paper and stapled together. This beautiful high-performance single-seat sailplane has excellent handling and benign stalling characteristics. Takeoff Distance Over 50-ft Obstacle: 895 ft. altitude) have no effect on the glide ratio. Like the original, it can handle a hefty 17-knot crosswind. 45 and 45 is what I was told. Im yet to see a gyro with a better G R than a rock. (35 gal. THE GLIDE RATIO (AND ITS GLIDE ANGLE) ARE UNCHANGED In 1967, Champion switched to spring steel main gear legs; by then, the Lycoming engine had become the standard. It is applicable to Serial Numbers 1240-98 and up. A typical American training glider has a glide ratio of about 24:1. Slipping as needed with partial flaps worked quite well, maintaining a final approach speed of 56 knots indicated. Champion 7ECA Citabria - 1 . There were 1,214 Citabria 7GCBC aircraft produced before Bellanca Aircraft Corporation ceased production. 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). To emphasize a glider term, sink rate matters. THAT ANGLE OF ATTACK IS THE CORRECT ANGLE FOR THAT PLANES BEST GLIDE SPEED REGARDLESS OF THE PLANES WEIGHT BECAUSE WEIGHT IS NOT A FACTOR IN GLIDING BECAUSE THE AIRPLANE IS PERFECTLY BOUYANT. N20737, Glider: HoltzMach 0.1 SimulatorTail #: Not airspeed Joe, Angle of Attack. American Champion Citabria 7ECA Pre-Cut Vinyl Floor Kit. Would it be the same as your best climb? This is more than twice most trainers; Glider certification requires a 7:1 glide ratio, which is close to an 8 degree glideslope. 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. Someone on the internet gave a Vbg of 135MPH for a total glide time of 60 * (6/135) = 2 minutes 40 . 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. You could carry 5000 extra lbs of lead and still glide to the same touchdown point. For a 172, there is a significant difference between powered L/D vs gliding L/D due to the additional drag of a non-powered rotating propeller. 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 Champion 7ECA Citabria was a modernized version of the Champion Model 7EC Traveler. 1. The large wing area gives good low-speed handling characteristics, docile stalling characteristics, a excellent climb. Bill Piper really needed to have someone shot over that! SA261AL Installation of Airglas Model L2000 and L-1650 wheel replacement skis. This is great!! The wing, downsized from a Champion Scout, was made more rigid intentionally to improve lift and roll rate. should i maintain the same speed or should i increase my airspeed by increasing dive angle to get 1000 ft .min ROD. Use tab to navigate through the menu items. Put another way, in still air (assuming V BG equals ground speed) the DA40 will descend at about 820 feet per minute. [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. A sport pilot may: Share the operating expenses of a flight with a passenger, provided the expenses involve only fuel, oil, airport expenses, or aircraft rental fees. The fuel tanks are vented together with the vent located on the left wing. 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. Prop stopped, which helped the glide ratio quite a bit. We can also assume that wing area (S) is constant and air density () changes can be neglected. The most noticeable external changes to the design are the Citabria's squared-off rudder surface, wingtips, and rear windows. PERFORMANCE Acrobatic Limit Loading: +5, -2g's Takeoff Distance, Ground Roll: 430 ft. Takeoff Distance Over 50-ft Obstacle: 895 ft. The glide ratio is based only on the relationship of the aerodynamic forces acting on the aircraft. Designed for flight training, utility and personal use, it is capable of sustaining aerobatic stresses from +5g to -2g. American Champion expects to begin building the 7GCAA in a year, but with a 160-hp engine. Gross Weight: 1750 lbs. The airplane is approved for day and night VFR operations when equipped in accordance with F.A.R. The similar, although more rugged, 8 series is used for the Scout bushplane and the more fully aerobatic Decathlon. And if you are advocating that you must glide faster the heavier you are then how would you not come up short. Vy in your airplane is 69 mph. Federal Aviation Administration. Do you disagree? Top of wing tip to top of cabin 2 feet. Can you or anyone judge 6.01 deg glide path (not angle of attack) An airfoil glides at a maximum lift over drag coefficient, which occurs at a precise Angle of Attack. 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 . Bellanca continued production of the Decathlon throughout the 1970s, moving to the Super Decathlon variant during 1976. Views: 614 The Micro Citabria charger stand is identical to the Cessna. Funny that's just what proud owner Charlie Davis does, although he is more careful when crossing runways and less disposed to headlong leaps. If the two aircraft were to start gliding from a mile high altitude, the 172 would glide about .8 miles further than the phantom. Variations in aircraft weight do not affect the glide angle . L=cL(1/2 x Rho x v2) S. Higher weight requires higher lift. Rolls are okay, though and loops. With no other changes the plane starts too fall. 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. Aircraft.com is the leading registry for planes, jets, and helicopters. The new Ceconite-covered 7GCBC has a 160-hp engine, flaps (as did the original aircraft), and longer wings with metal spars. Increased wing rigidity is to blame for the float, Mehlhaff, Jr., said. Heres one from aerodynamics test: They were also found in utility roles as bush planesthanks to their short take off and landing (STOL) ability, agriculture, pipeline patrol, and as glider towplanes. People should practice engine-outs by landing with idle power whenever possible. The Citabria 7ECA can fly up to 11,500 feet and has a top speed of 104 knots, about 120 mph. 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. Ours had all spraying equipment removed. Gliding is a descending, opposite of climbing, which is ascending. 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. Like the Champ, the Citabria features tandem seating. The pilot suffered a catastrophic engine failure (cylinder separation) in a Cessna 205. On this Wikipedia the language links are at the top of the page across from the article title. The first quoted paragraph said; . Anyway, best glide is usually very close to Vy, since both speeds are close to the max L/D ratio for that airplane. This is before CAM8 increase. When introduced, it featured wood-spar wings and oleo-shock main gear. 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