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. CITABRIA EXPLORER 7GCBC. 1111, Glider: CentrairPegasus 101BTail #: Description: The G102 Astir is a single seat fibreglas 15m Standard Class sailplane with a retractable wheel, designed by and built by Grob Aircraft, with the first flight in December 1974. This is great!! A C172 w 9.5/1 glide ratio (L/D) has a 6.01 deg. Designed for flight training, utility and personal use, it is capable of sustaining aerobatic stresses from +5g to -2g. The glide ratio varies with air speed, but there is a maximum value which is frequently quoted. Thus, the only remaining variable left to change our lift is velocity (V), or airspeed. A typical commercial airliner will glide at a ratio of about 3:1. There is this sweet spot where both are minimized and that is where you will find your best aircraft glide performance. The Citabria, great-great-great-grandchild of the Aeronca 7AC Champ, is a fly-for-fun airplane. Designed for flight training and personal use, it entered production in the United States in 1945. Aircraft specification no. 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). Bellanca continued production of the Decathlon throughout the 1970s, moving to the Super Decathlon variant during 1976. The 7GCBC Citabria was used as an observation aircraft by the Turkish Army. Ours had all spraying equipment removed. In 1967, Champion switched to spring steel main gear legs; by then, the Lycoming engine had become the standard. 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. LETS SEE IF WE CAN CORRECTLY FIGURE OUT THE ANSWER! Maule Air Texas Inc. OR USA (214) 384-1858 . Usable) Oil Capacity: 8 quarts Baggage Capacity: 100 lbs. Demonstrated Crosswind Component: 17kts. http://www.skybrary.aero/index.php/Glide_Performance. Vy in your airplane is 69 mph. Boldmethod. - MOUNT ENGINE SET OF 4. In addition, the carburetor was replaced with a fuel injection system, and a Christen Industries inverted oil system was fitted to the engine. Sign in 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. To emphasize a glider term, sink rate matters. tan -1 (1/14) or tan -1 (0.714) or 4.086 degrees. The Explorer likes to fly. 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.? The electrical system is 12 volts, direct current, using the airframe as a negative ground. 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. Use tab to navigate through the menu items. Nationality and Registration MarksZK-CIT. The angle to the left wing from the pilot eyes is around 5.4 degrees. Do you disagree? When the Citabria was introduced, it was the only airplane being commercially produced in the United States which was certified for aerobatics. I used the following estimates. 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. 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). Views: 812 When American Champion reintroduced the 7ECA in 1995 as the Citabria "Aurora, " the biggest change was the use of metal-spar wings; the most recent significant design change has been the switch to aluminum main gear legs in 2004. In that period, only one Citabria model was builta 7GCBC marketed as "Citabria 150S." 3, 2005.) If it is significantly faster, it may cover more distance in a shorter amount of time before touching down Not sure. THE TOUCHDOWN POINT IS UNCHANGED Glide ratio usually varies little with vehicle load; a heavier vehicle glides faster, but nearly maintains its glide ratio. Arrow is famous for a safe glide ratio - glides like a safe. Drag is apposed by thrust. the descent speed increases, but the glide ratio . rather than 7.01 or 5.01 ? L=cL(1/2 x Rho x v2) S. Higher weight requires higher lift. HERES WHERE MY THINKING MAY GET SCREWED UP. But the best glide speed for the SR20 is put close to 100 knots, with the DA40 at 70. A modern German counterpart about 33:1. Official Burn Certificates. 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. Designed for flight training, utility and personal use, it is capable of sustaining aerobatic stresses from +5g to -2g. The first quoted paragraph said; The L/D ratio and the glide ratio are always equal in steady-state linear unpowered flight in still air, but they are not equal if there is some thrust from a motor. What does glide ratio mean? Will both airplanes arrive at the same point? AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -, 2023 Aircraft Owners and Pilots Association, Avg. This particular Explorer is equipped with a radio, Mode C transponder, intercom, and even a II Morrow GPS. N234WE, Tow: American ChampionCitabria 7GCAA Sn#:2Tail #: N3822A, Glider: SchweizerSGS 2-33ATail #: Using the Explorer to give tailwheel transition training to a nosewheel pilot is almost cheating, given the aircraft's well-mannered behavior. Obstacle: 850 ft. VNO(Maximum Structural Cruising): 120mph. The similar, although more rugged, 8 series is used for the Scout bushplane and the more fully aerobatic Decathlon. 4 products. 1. American Champion President Jerry Mehlhaff is banking on the Explorer being much more than a fun machine, of course. Flight planning or any other aircraft operations should only be done using official technical information provided Sure, but I sense that a 172 and a Mooney 231 have rather different numbers. Both at the same time? Any rule that states an airplane has to be operated within CG limitations? Solo Date: November 19, 2022. Anyway, best glide is usually very close to Vy, since both speeds are close to the max L/D ratio for that airplane. Like the 7KCAB, the engine of the 8KCAB has a fuel injection system, as opposed to a carburetor. So what does all this gibberish mean, right? Prop stopped, which helped the glide ratio quite a bit. Most Citabrias were built with wooden spars. 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. Remember weight does affect stall speed. Not to mention a "what the heck, let's roll it airplane." 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. The 7GCAA and 7GCBC variants, added in 1965, were joined by the 7KCAB in 1968. 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. A car that has alot of horsepower is 300+. Horse Power @ RPM: 160 @ 2700 rpm. Now offering Citabria gear and suspension options in a variety of specifications. Now the plane has a faster groundspeed and with the nose down more, its also descending faster. The Citabria is based on the Champion 7-series airframe. 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. Put another way, in still air (assuming V BG equals ground speed) the DA40 will descend at about 820 feet per minute. The factory calls it a "Champ on steroids with flaps." [2] He took off from an airstrip at William Barron Hilton's Flying-M Ranch, about 70 miles (110km) southeast of Reno, Nevada. twins are probably in the same range for engine out L/D i.e. tan(glide angle)=alt/distance. (You must log in or sign up to reply here. In the glide, the aeroplane's angle of descent is about 6 degrees - about twice as steep as a normal visual glide path. Tracking the runway centerline required little effort. So, there isn't better glide performance at altitude. 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. And, on a side note, do any of you happen to know the glide ratio for a 7GCAA? N70FP SN#101A202, Glider: SchweizerSGS 1-26ATail #: No answer. YOU GET THERE QUICKER. 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. If the two aircraft were to start gliding from a mile high altitude, the 172 would glide about .8 miles further than the phantom. "It reduces a lot of problems," Mehlhaff, Jr., said. To take advantage of the new light-sport aircraft category, the Champion was returned to production in 2007. Perfect equilibrium. HOLY COW!! Perversely, adding weight means that the best glide angle occurs at a faster speed. lighter. The Citabria 7ECA can fly up to 11,500 feet and has a top speed of 104 knots, about 120 mph. Discussion in 'Flight Following' started by Morne, Dec 21, 2011. average spam cans seem to be right around 8 or 9:1. THE GLIDE RATIO (AND ITS GLIDE ANGLE) ARE UNCHANGED 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. 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." JetPhotos.com is the biggest database of aviation photographs with over 5 million screened photos online! Instructor: Scott Williams. Each of three approaches required a forward slip, since the flaps were of little help. The most noticeable external changes to the design are the Citabria's squared-off rudder surface, wingtips, and rear windows. INSTRUCTION: Choose units and enter the following: Glide Ratio (): The calculator returns the Glide Ratio as a real number. If the weight is reduced and the IAS held constant, the glide angle will: 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! The Citabria is a light single-engine, two-seat, fixed conventional gear airplane which entered production in the United States in 1964. Slipping as needed with partial flaps worked quite well, maintaining a final approach speed of 56 knots indicated. Agree, especially if you mean the hershey bar variety. Daher Kodiak 100 Specifications. 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). Bellanca introduced two designs with close connections to the Citabria: The 8KCAB Decathlon and the 8GCBC Scout. gyro's don't glide far. The math looks like this: 9114.18 ft /1000 ft = 9.11418. Slow flight was performed at 35 to 40 knots with flaps down. Most think this is blasphemy, so take it with a grain of salt: N7519F, Tow: PiperPA-25-235 PawneeTail #: GlobalAir.com is your partner in connecting you with relevant information and resources. In 1988 the design rights and support responsibility were sold to Latino Americana de Aviacin of Argentina. 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) 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. altitude) have no effect on 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. 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. Description: Our Club purchased this glider simulator in 2019 for our students from Russell Holtz. I have a restricted category for my 7gcbc ('69 w/ wood wings) for crop dusting, it states 2300lbs gross. Gliding is a descending, opposite of climbing, which is ascending. Further practice would reduce the landing distance still further. (The Citabria was certified under older CAR 4a regulations, when a more extensive flight manual was not required.) SPECIFICATIONS. The winds would have to be factored in as well. Cockpit switches and controls will be familiar to anyone who has flown an older Decathlon or Citabria, although circuit breakers have been modernized. Aircraft Owners & Pilots Association Find it free on the store. ? It has a claimed maximum L/D = 41. Any faster and parasite drag increases and any slower induced drag will increase.. Champion 7ECA Citabria - 1 . 2023 GlobalAir.com. 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. 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. Length: 22 9. Production was completed in 1981. The 1979 book I have has performance charts, but my 2001 book doesn't. Go figure. The airspeed and angle of attack are related directly, yes ? Both aircraft will cover the same distance but the lighter one will take a longer time to do so. 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. Does the extra weight provide the extra energy to offset the extra drag? BUT Rolls are okay, though and loops. Wing aspect ratio: 6.72; Length overall: 22 ft 8 in (6.91 m) Height overall: 7 ft 0 in (2.13 . hope this might help. 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A car that has alot of horsepower is 300+ Decathlon and the more fully Decathlon... Latino Americana de Aviacin of Argentina any faster and parasite drag increases and slower! Maintaining a final approach speed of 104 knots, about 120 mph ratio for a glide. Enter the Following: glide ratio ( L/D ) has a top speed of 104 knots, 120... 2700 RPM a negative ground and that is where you will find your best aircraft glide performance gliders. Jr., said the math looks like this: 9114.18 ft /1000 ft = 9.11418 cockpit switches and will! A side note, do any of you happen to know the glide ratio for a safe:... Distance but the lighter one will take a longer time to do so.! Looks like this: 9114.18 ft /1000 ft = 9.11418 lets SEE if WE CAN CORRECTLY FIGURE the! ( L/D ) has a top speed of 56 knots indicated be around. Correctly FIGURE OUT the ANSWER ft. VNO ( maximum Structural Cruising ): calculator... To the max L/D ratio for a safe and the 8GCBC Scout 1988 the design are the Citabria, circuit! Do so Citabria - 1 x v2 ) S. Higher weight requires lift. All this gibberish mean, right performed at 35 to 40 knots with flaps. increases, but the one... ( L/D ) has a fuel injection system, as opposed to a carburetor down more, also... Gear airplane which entered production in the United States in 1964 on steroids flaps... Citabria model was builta 7GCBC marketed as `` Citabria 150S. Following ' started by Morne, 21! Of time before touching down not sure connections to the Super Decathlon variant 1976... With air speed, but my 2001 book doesn & # x27 ; t. Go FIGURE 120mph... Are the Citabria, great-great-great-grandchild of the Aeronca 7AC Champ, is a maximum value is! 35 to 40 knots with flaps down for a 7GCAA 104 knots, about 120 mph, maintaining final! The 7GCAA and 7GCBC variants, added in 1965, were joined by 7KCAB! To change our lift is velocity ( V ), or airspeed airframe as a real.... And 20:1 while sailplanes have a glide ratio as a negative ground United States in 1945 No on! Cg limitations will increase.. Champion 7ECA Citabria - 1 to 11,500 feet and has a top of... A C172 w 9.5/1 glide ratio of between 15:1 and 20:1 while sailplanes have a ratio! Of sustaining aerobatic stresses from +5g to -2g system is 12 volts, direct current, the!
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