If the C-172 has an L/D of 9.5. It's based on the Champion 7-series airframe. Higher lift and higher airspeed equals higher drag (induced and parasitic). Power Plant: Lycoming O-320-B2B. by the manufacturer or FAA. The only thing that has changed is the rate at which the plane is proceeding along the glide path. More Info. Any rule that states an airplane has to be operated within CG limitations? The plane is now EXACTLY as buoyant as it was before. It may not display this or other websites correctly. 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. Bill Piper really needed to have someone shot over that! It is still being produced. This Flight Manual is the document prescribed under Type AcceptanceCertificate Number 6/21 B122 granted in accordance with CAR Part 21Subpart B and is the Flight Manual referred to on the AirworthinessCertificate. The Citabria is based on the Champion 7-series airframe. fitness for any purpose is made or implied. N3822A, Glider: SchweizerSGS 2-33ATail #: The aircraft was powered by a 200hp (150kW) Lycoming IO-360 Special engine driving a two-bladed propeller. ). Youre right, flying the correct attitude is a much better approach to flying the aircraft during emergencies than trying to focus on maintaining a specific indicated airspeed. Or is the extra drag just neglected in the calculation? Since it is the lift over drag (L/D) ratio that determines the gliding range, weight will not affect it. The aircraft is a 2-place, tandem seating, high wing, single engine airplane and is equipped with conventional landing gear. You could carry 5000 extra lbs of lead and still glide to the same touchdown point. The last two positions, 27 degrees and 35 degrees, are a tough pull. That model was abandoned by aerobatic enthusiasts in favor of the Champion Decathlon 8KCAB because of its better inverted flight performance. Formally Quest Aircraft, the Daher Kodiak 100 was first introduced in 2008 as a rugged off airport single engine turboprop aircraft. Views: 614 The Micro Citabria charger stand is identical to the Cessna. A little extra airspeed has minimal effect, but a little too slow is bad. 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. Cruise speed: 126 mph. This is great!! AN6-25 BOLT 1-2550 BUSHING AN310-6 NUT AN945-6P WASHER. It has a claimed maximum L/D = 41. 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. They also now manufacture the Citabria Adventure and the Citabria Explorer. The engine was replaced with a Lycoming IO-320-E2A of 150 horsepower (110kW), while a header tank of 1.5 gallonslocated beneath the instrument panelwas added to the fuel system. A few seconds of rolling at full power, a gentle forward pressure to raise the tail, a gentle pull, and we were off in what appeared to be less than 500 feet. A) decrease Because the AOA remained unchanged, this once again perfectly balanced plane will remain on its same glidepath and arrive at the same touchdown point. The electrical system is 12 volts, direct current, using the airframe as a negative ground. Like the 7KCAB, the engine of the 8KCAB has a fuel injection system, as opposed to a carburetor. 3. The outer shape of the fuselage is created by a combination of wooden formers and longerons, covered with fabric. 2. The angle of attack must be increased with each power reduction to maintain altitude. On this Wikipedia the language links are at the top of the page across from the article title. 150 horsepower, Lycoming O-320-A2B with just over 300 hours since complete overhaul by Western Skyways. ? 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. Slow flight was performed at 35 to 40 knots with flaps down. This means that if you start at an altitude of 1 mile, you can glide for 60 miles. Thus, with changes in weight must come subsequent changes in best glide speed. THE GLIDE TIME IS SHORTENED. Usable) Oil Capacity: 8 quarts Baggage Capacity: 100 lbs. Description: The Citabria is a light single-engine, two-seat, fixed conventional gear airplane which entered production in the United States in 1964. Aircraft weight, air density (e.g. The real-world measurements I've done with our 182 resulted in a 7.04:1 glide ratio. JavaScript is disabled. See the airplanes P.O.H. Especially when the angle is so slight. #20. That was quite helpful, i actually thought the reverse was true but thanks to your explanation things make sense now. Notice, there is no weight given here. Cleveland - 062-00300 - Piston. Bellanca Citabria 7GCBC. 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. Further practice would reduce the landing distance still further. Im yet to see a gyro with a better G R than a rock. Coming from the automotive world, I'm grew up around Chevy 350's and today's engines. I also know there is a direct relationship between AOA and airspeed. Fuel quantity is registered by two direct reading float type gauges, one for each tank. Mark, not exactly. A modern German counterpart about 33:1. 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. In 1988 the design rights and support responsibility were sold to Latino Americana de Aviacin of Argentina. In GA aircraft, the speed is given in reference to the max weight. 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. Someone on the internet gave a Vbg of 135MPH for a total glide time of 60 * (6/135) = 2 minutes 40 . the descent speed increases, but the glide ratio . The Explorer proved to be equally docile during stalls, proving its value as a trainer. The heavier the aircraft is, the higher the airspeed must be to obtain the same glide ratio. I fly over a huge area of good LZ's. Production history [ edit] or Signup, You are here: Home Flight Instructor Blog Effect of Weight on Glide Ratio. 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. Length: 22 9. 1. Takeoff Distance Over 50-ft Obstacle: 895 ft. SAVE Last Update: 02/24/2023. Locate a Dealer. It uses the CONDOR Soaring Software Program and is the same simulator used at the USAF Academy. The C172S will descend at about 760 feet per minute. the glide ratio is independent of the weight or mass of the aircraft. But I am not sure of that. whether the flaps are deployed, the landing gear is down etc. The 7GCAA and 7GCBC variants, added in 1965, were joined by the 7KCAB in 1968. 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. Keep in mind, though, you're going quite a bit slower than your best glide speed, and that can significantly impact your glide range. 15:1 from 2000 feet gives a distance of 30000 feet or about 6 miles. Like the Citabria, the Decathlon features tandem seating and center-stick controls. Login required to see more detailed info on each aircraft. Instructor Davis said the aircraft requires a long, flat approach, but that was inhibited somewhat at Warrenton by trees off the approach end. The Decathlon was designed by the Champion Aircraft Corporation, and is a derivative of the 7-series Citabrias. 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. Demonstrated Crosswind Component: 17 kts. Increased wing rigidity is to blame for the float, Mehlhaff, Jr., said. 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. 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. 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. The weight is no longer a factor in this scenario. Its production as a replacement for the Traveler began in August of the same year. In this example, the glide ratio provided in the POH comes out . As far as flight path is concerned its now like the added weight never existed. Most Citabrias were built with wooden spars. 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). 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. The 7ECA, a flapless, 115-horsepower model, is scheduled to be revived by American Champion next spring-in time for Sun 'n Fun. 5. This is important. TO OUR GLIDE TIME? the heavier plane will reach the ground faster. This should be a indicated airspeed you should try and maintain the second your engine quits or starts sputtering. The Explorer likes to fly. The Aeronca Model 7 Champion, more commonly known as the Champ, is a single-engine, two-seat, fixed conventional gear airplane. This speed is important as it represents the bottom of the drag curve. The lighter? Login . N7519F, Tow: PiperPA-25-235 PawneeTail #: Compared to the Citabria's wingspan of 33.5 feet (10.2m), the Decathlon's wingspan is shorter, at 32 feet (9.8m). Really ? Discussion in 'Flight Following' started by Morne, Dec 21, 2011. average spam cans seem to be right around 8 or 9:1. N574KS, Glider: GrobG 102 Astir CSTail #: "It reduces a lot of problems," Mehlhaff, Jr., said. (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.). Airplanes fly on excess power, not grace, not engineering. 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 Citabria is a light single-engine, two-seat, fixed conventional gear airplane which entered production in the United States in 1964. Like the Champ, the Citabria features tandem seating. Do you disagree? L=cL(1/2 x Rho x v2) S. Higher weight requires higher lift. Does an SR 22 require any additional rating or endorsement? 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 ? altitude) have no effect on the glide ratio. The pilot did an awesome job, cool as a cucumber. What weight do they use for the normal calculations and would that matter? I am all about learning so help me out here. Why? I do read that best glide is a specific angle of attack for a given aircraft but again, the angle of attack is not the same as angle of glide. To aid in getting down, it is recommended that power be reduced to idle opposite the point of intended touchdown. When imported it was registered in the USA - as an A model. You are using an out of date browser. Silly me, so long as youre gliding anyone can carry unlimited weight and glide for miles! No Oil Required Fuel Capacity: 36 gal. Glide ratio usually varies little with vehicle load; a heavier vehicle glides faster, but nearly maintains its glide ratio. The 7GCAA was basically the same as the 7ECA, but with a 150-hp engine. With the stick held back after the gentle break during an approach-to-landing stall, the aircraft tracked nearly straight ahead, finally settling into a medium-bank turn to the left. It is applicable to Serial Numbers 1240-98 and up. Glide ratio measures the performance of an aircraft's glide; many modern gliders have a glide ratio better than 60:1. Fuel Burn at 75% power in standard conditions per hour. Horse Power @ RPM: 160 @ 2700 rpm. So tell me (Jim and Paul) what is the AoA for my Citabria or C172 ? 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! [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. You would have to have a different attitude (sight picture) to achieve this. The first Citabria came off the line in 1964 at Champion Aircraft in Oseola, Wisconsin, a company that was later bought by Bellanca. (just kidding). $145.00/hr. The Citabria is a light single-engine, two-seat, fixed conventional gear airplane which entered production in the United States in 1964. Bellanca continued production of the 7KCAB as the Citabria "B" Package (a designation apparently begun by Champion). N234WE, Tow: American ChampionCitabria 7GCAA Sn#:2Tail #: 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 . Like the original, it can handle a hefty 17-knot crosswind. WHAT WILL THESE CHANGES DO TO OUR TOUCHDOWN POINT? Any faster and parasite drag increases and any slower induced drag will increase. (Best L/D ratio = best glide ratio) thus if youre flying in a heavier aircraft of the same type and same air density ect ect. Lighter Total system is now 3 lbs. How do you determine the best engine off glide ratio in a gyro? Remains of the plane were found 13 months later near the town of Mammoth Lakes, California, just south of the original search area. It remains a widely used aircraft in agricultural spraying and is also used as a tow plane, or tug, for launching gliders or for towing banners. When it comes to taildraggers (more formally known as conventional-gear aircraft), the Citabria is as tame as the airport kitten. Left & Right Wing LED Lighting (with Flood & Wig-Wig). One glide I did from 7500' down to the surface at ~800 MSL resulted in an 11.54 glide ratio. So based on the information above. 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. 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) This is before CAM8 increase. Table of Contents. Further improvements to the 7GCBC include use of the heftier front wing strut from a Decathlon, which is attached to the wing with a beefed-up end fitting. An ILS approach, with a 3 degree glideslope requires an 18:1 glide ratio. Its name spelled backwards, "airbatic", reflects this. Disclaimer: Information on this site may not be accurate or current and is not valid for flight planning or any other aircraft operations. 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