Thrust to weight ratio rc plane reddit

Thrust to weight ratio rc plane reddit. " From Wikipedia. Not sure where you heard 1. Recall that to find an average, simply add up the values given and divide by the number So I think that I want to try to build my first rc plane. On one flight was had 2 engines stop before takeoff and had to proceed regardless as we were almost at takeoff. 7 and a thrust-to-weight ratio of 0. If you were going for max thrust you'd choose the 20x1, but obviously it's a poor choice. The chart will also tell you how many amps the motor will pull in those configurations so you can size your ESC and battery properly. For an engine to develop what they call max "installed thrust" it's assumed it's not at zero airspeed. but the question might be My skill level is somewhere inbetween sport flying and 3d flying. The motor value is on the left of the ratio, and the plane’s weight is on the right. Finally, 1:1 doesn’t let you accelerate. 5:1 or even 1:1 is a good way to measure. Thrust at 1 mph = 12 oz. intaminslc43 • 1 yr. 4. 82. . Load balancing is important. 3:1, it means the power value of the motor can be 1/3 the weight of the aircraft. Indiana - looking at your plane I say just get a motor that will be able to turn a 9x6 @ 7,000 RPM. 2 to . Lift provides the upward movement. It might have enough. 1:1 and a Dec 30, 2021 · For multi (quad)copter, minimum thrust to weight ratio is 2:1 and more than that. Same T:W in a FVK Bandit, but pitch speed over 80mph and it has good warmliner performance and over 20m/s climbs. Jul 28, 2012 · Beginners - thrust weight ratio - First offi'm not a noob when it comes to rc planes and flying,. Apr 20, 2015 · In a recent LMR comp flying a 2m F5J model I was badly outgunned at about 200W/lb, about 2. 5:1 is a low thrust to weight ratio. but they do fly larger jets My motorglider has about 1. TollBoothW1lly. But Pat's are very light designs. I'm running a 1. 6 thrust to the weight ) a 3D type will often be a 1:1 ratio or slightly more. I’m coming from the rc car hobby, so I have some old rc car electrics hanging around that I want to use. At what point or what ratio will I not be able to fly the plane. The thrust to weight ratio calculator will now return the value of thrust to weight ratio as 0. 100% is used short time in special parts of a maneuver. 85-. Archived post. If it going to be 60oz you need a far bigger diameter, lower pitch prop on 3s or 4s to get you closer to 120oz thrust! 1 / 2. I think for a more normal plane, 7m/s would be a good target. RC plane thrust and weight. 8KG and was wondering what a safe weight for the plane should be to fly effectively. A slow flying trainer, the thrust will need to be 60-80% of the weight of the plane. I would order a new motor though. A muticopter with a 2:1 thrust to weight ratio has enough power to safely navigate all controlled flight situations. I ca ntell you that a byron fan puts out about 13-15 lbs of thrust but they arent usually found in aerodynamically clean setups. A lot of ARFs will probably be heavier as compromise for ease of manufacturing. 6 W/lbs is it too much or can I easily control it using my 9XR-pro settings. 2V 35. (don't decrease past 2:1, compromises flight characteristics) . Next, determine the total weight (kg). 35 Stunrt Plane should be 40 ounces or less. Sort by: Add a Comment. 9. my second question is what thrust will i be Aircraft Stat Cards Hidden Stats (Wing loading and Thrust to Weight) Other. If you're going for scale here, you can figure out the actual plane's thrust to weight and use that as a guide, too. Oct 21, 2008 · RC Jets - Thrust to Weight ratio - Ok, I'm looking to be able to make a pass with the engine spooled up good, However I'm not interested in going Mach 10. 2 will make the rocket fly efficiently. I heard for good 3d flight, you need a thrust to weight ratio of somewhere between 2 or 3 to 1. The F-22 I believe has a t/w of 1. If you want to build a jet your best bet is a real turbine, which sounds exactly like a normal jet engine just quieter. 5:1, which means the thrust value must be half the weight value of the aircraft. Having started to build rc planes this year using a friends laser cutter ive been treating the thrust the motor makes as the max weight for my planes, usually being 1kg. The total weight (kg) is provided as: 500. 4oz) to weight (73. Aug 27, 2017 · efflux RC. The power to weight ratio is typically expressed as a ratio such as 0. It’s a jet that’s not strictly a combat plane. Mar 23, 2017 · Registered User. It was very simple, and like a dope I forgot to write it down! I was thinking of getting the t45 actually. New comments cannot be posted and votes cannot be cast. But for general flying, a 1. Enter the thrust available in the calculator as 80 kN. 3-1. You don't need anywhere near a 1:1 thrust to weight ratio for a trainer, but the closer you get the more the motor can offset poor aerodynamics :) For servos I find it is a little bit of black magic. This is the ASCII version that demonstrates WHEN TRAVELLING AT TERMINAL VELOCITY, THE MOST EFFICIENT THRUST-TO-WEIGHT RATIO IS 2. If I'm heavy then less. 。KFm2 airfoil with 5deg angle of incidence. Hmm, Looks like it will weigh in at 3. For 3D flying, it's more common to see 2+:1 power to weight ratios, so a screaming punchout from a hover is possible. 45 Jan 24, 2007 · Pitch speed = 5. 6:1 at take off to nearly 2. 8-0. Jan 18, 2024 · First of all, since the aircraft has two engines, we find the total thrust available, such that: Thrust available = 2 * 40 = 80 kN. The weight the plane can carry will depend on the aircraft’s wingspan and surface area, thrust-to-weight ratio, construction materials, internal space, and prevailing weather conditions. The flight technique of the pilot plays just as big of a role here however. In general, for "average" sport models, my personal method is to go by displacement/weight ratio. For example if a particular airplane weighs 50 ozs and has a lift to drag ratio of 20:1 (L/D of the whole airplane) the minimum thrust required for that airplane to remain flying is only 2. Aug 13, 2013 · Aug 15, 2013. You must know the type of plane and the size and weight before thinking of the power and speed you need from the motor/prop. In other words, it's flying forward. 2:1 or 3:1 would be very high . You just don't know it yet. Thanks P. some small RC will even have a 1:1 thrust to weight (small ones) Go through 3-4 again until you find a good balance that you like. what is the best thrust to weight for 3d. Dec 26, 2010 · of course it depends on the weight of the plane itself. 8: 1 and on fast models from 0. Throttle and Rudder. The more power the better as it translates to more margin and better control, obviously the drawback is overall weight and possibly having to deal with the Toilet2000. 162 as the core. Let’s say you built a turboprop engine using an Rb. 9oz) to weight (73. The great thing is that decreasing the thrust:weight ratio generally increases flight time. You will be full throttle the whole time. Apr 16, 2003 · Twin & Multi Engine RC Aircraft - Thrust to weight ratio - Awhile back someone had a great formula for multi engine models as to the thrust to weight ratio. A 3D plane will need 150-200% thrust to plane weight. x2475bravo61. •• Edited. That assembly looks quite heavy! And the specific ducted fan/turbines used in RC are very often extremely light weight for their thrust output. 6 oz. What do you think ? Don't you think 2 100 lbs would be more appropriate with this application ? During constant level flight speed, the thrust force is equal and opposite to drag. At the best lift-to-drag ratio airspeed, the excess-thrust (27. 5:1. 15 comes from. 9kg to 9kg. For about the same Amps you could use a 11x6 which gives. 8 c. The thrust-to-weight ratio is calculated by dividing the thrust (in SI units – in newtons) by the weight (in newtons) of the engine or vehicle. 220 W/kg = aggressive aerobatics and mild 3D, effortless loops from level flight. ADMIN MOD 1. I have been flying foamies for about two years and I have flown the stratos, super cub, cessna 1400mm, p-40 warhawk 1400mm, Jun 22, 2011 · So, yes there is a limit to thrust to weight ratio. 7°, giving a lift to drag ratio of 4. Reply Like. 5 to 1. An RC plane can generally carry a weight of between 2 lbs to 20 lbs or 0. A typical plane, 80-100%. Plus they make the most horrendous and unrealistic sound ever. As an example, if your motor develops a thrust of 840 grams and your RC plane weighs 1. And then some are gonna be bricks, it's pretty easy to get more than enough power in a small plane. amount of wing area). Aug 4, 2005 · Aerodynamics - Engine/thrust to weight ratio chart - I was wondering if anyone is aware of a chart that gives basic thrust to weight ratio needed to get the unlimited vertical seen in today's models. This subreddit has been taken private from June12 in support of the strike on reddit to protest the upcoming changes to the pricing structure for the reddit API and related rule changes. 5:1 is needed in order to the plane be able to takeoff from the ground. The plane when done will probably weigh slightly more than 500 grams. 9/1. Though that estimate may be on the high end. plane Jul 31, 2023 · The total thrust (N) is given as: 10000. 55 W/kg = minimum for level flight, with a reasonably clean plane. Torpedoes are only put on the plane when the mission is naval strike. Basically, EDFs are pretty efficient, but it's just much harder to get high thrust EDFs than large propellers (since EDFs can be up to 100$ for the prop+motor Sep 5, 2006 · 3D Flying! - thrust to weight ratio - I have a 1/4 scale extra 300. With a thrust to weight ratio greater than one, and the aircraft in the vertical (ignoring weight) thrust needs to overcome both drag and weight. 5 to 1 static thrust to weight ratio. However, a 1:1 ratio wouldn't be hard to do with little weight penalty. Plan on using an RCV90 with a Zinger 18x12 prop as recommended by Otto. Aug 25, 2009 · Here is an often used listing of the power needed for various kinds of planes: Approximate power requirements: 50-70 watts per pound; Minimum level of power for decent performance, park flyer/slow flyer models. Prop+Motor adapter, 20g Servo x3, 27g Total component weight: 472g Total plane weight: ~1,000g. I e got an EDF with a thrust of 1. How does weight exceed thrust? W9 T16. Over 30 oz of thrust all the way up to 30 mph. : I'm having massive CG problems with this plane. 8 m/s 2. He upped it to a E-Flite 450 outrunner, now its a rocket. 0. 8 thrust to Jul 5, 2019 · Most sport and scale type planes will have a little over a 50% power ratio ( about 0. 75 to 1. 3: 1 to 0. Jan 10, 2006 · 3D Flying! - ideal 3d thrust to weight ratio? - im sure this has been stated before, but i searched and was not able to come up with anything. 123K subscribers in the AskPhysics community. A subreddit to draw simple physics questions away from /r/physics. Suggested ESC ( for 12s max): Castle Edge 120HV. For your plane, 10. Oct 19, 2006 · 3D Electric Flying! - Power/thrust to weight ratio - I have a accell hobby katana es 30. Oct 26, 2013 · If you are saying 1:1 is better, then surely 0. Nov 4, 2020 · The power/weight ratio can be expressed as follows: 0. It is for the most part, 3d capable. 840 ÷ 1. In other words 2 to 4 lbs. I was wondering what the optimum TWR of a plane should be. based off 4, choose motor and electronics: Find a motor that will give more than enough thrust and go from there to find your battery and ESC. 440 W/kg = Unlimited high-speed vertical flight. That's on 5s! and as Mark says - who needs 80mph on a 3D plane. Jul 7, 2004 · - Hello I was planing to fly a 220 lbs scaled model with 2 engines of 45 lbs thrust each, but I'm afraid it will not be powerfull enough . 6A Thrust: 2. Ask away. Jan 1, 2021 · @siddhant_sangai Thumb rules for thrust: Trainer with low wing loading - 100watts/kg or 50% thrust/wt Mild aerobatics - 200watts/kg or 1:1 thrust/wt What is the best possible power to weight ratio that can be achieved in a turboprop engine ? From what I understand, the turbojet engine with the highest T:W is the Rolls Royce Rb. Measuring static thrust only tells you half the story. 75lb (60oz) with battery. 8: 1 onwards. I have a Turnigy K-force 40A ESC and a SK3 2836-1500. 3 mph. 162 with a thrust to weight ratio of 18. I've never flown competitive stunt and never questioned that rule of thumbuntil recently I plugged the numbers into a static thrust calculator and found that a 10 x 6 APC spinning at 9500 rpm produces 41 ounces . Instead, a 2. Naturally heavier craft will tend to take longer due to momentum, but proper thrust to weight can counter that. Best recoil spring weight for beretta 92 estimated equilibrium angle of 13. My thrust to weight ratio is 127. I bought supplies for my first plane, which is the flying wing design! It is carbon fibre and will weigh 403 grams. Enter the weight of the aircraft as 10000 kg. Note: Remember that kN is simply N divided by 1000. You can also look up thrust-to-weight ratios of famous flights and engines. A 727 has a thrust to weight of something like 1:3. Oct 15, 2006 · APC 10x7 Sport 19. Most rc planes have at least a 2:1 thrust to weight ratio, sometimes more. I’ve got a titan 550 12t brushed motor and a traxxas 2s brushed esc for the power plant, I’ve got a zeee 8000mah 2s lipo, and full use of a hobby grade 3D printer with access to Nov 9, 2006 · The airplanes that require the least amount of thrust are gliders, some of which have lift to drag ratios of 40:1 or more. Idea Thrust - Weight ratio Scratchbuilt Indoor and Micro Models Jan 1, 2021 · But my plane is not flying when I keeping 0. 5/1 for aerobatics, and 1. Its all about margin. Mar 27, 2011 · I would say at least 60-70 percent for a reasonable rate of climb. 2 Kg thrust. As for the difference I haven't noticed one they probably aren't the same since the Dev team is working on Vacuum engines Dec 25, 2012 · Most model aircraft can fly at extremely low power to weight ratios, The 50W/pound rule of thumb simply determines how quickly they can gain altitude (potential energy). Thrust at 2 mph = 0. If the power to weight ratio is 0. What is the minimum thrust to weight ratio for a plane like this? Hi, i'm having difficulty choosing the right motor and propeller set for my rc plane. 5: 1 means that the thrust is half the weight, with this in mind, for gliders or light and slow-flying model aircraft, a ratio of between 0. The Jetfan 120 Pro with the HET 800-73-590 motor is 16. So, for a sport/aerobatic model, something like 0. I had an old rubberband airplane propeller that gave around 140g static thrust. Nov 15, 2023 · I also don't know of any edf jets with the thrust to weight ratio that this plane has 1. Thrust is forward. My theorycrafting says a helicopter needs at least a thrust-to-weight ratio of 1. Thrust to weight. Power is more important than static thrust. 。 It's a tandem wings with 50mm cord length and 60mm wingspan (end to end). 04 kg / 72 oz 684W 12000 79. 5 mph. . 4 % of the total plane weight. Quote: Originally Posted by jackerbes. I am thinking about putting a gas motor in it (Zenoah 20 cc or a SPE 26 CC and I know that I am pushing it), but I'm limited to a 14 prop. ago. aircraft to get off the ground and start flying. r/RCPlanes. W9 T16 : r/hoi4. A pilot who is comfortable with rolling/pitching nearly 90 degrees to slow down will be able to slow down single axis aircraft much much faster than one who Put a prop on it and I bet it'll work just fine on 3S as well. If you have any suggestions regarding the design then please share them with me. Theoretically, 1:1 is needed to hover, but a multicopter trades some lift for lateral thrust as it tilts, so you need a reserve of power above 1:1 just for maneuvering. Jan 1, 2023 · The Old Timers would say that a competitive FOX . 54:1 when all the engines were running at full power. Static thrust = 37 oz. Me flying (thrashing) it somewhere between 60 and 75% Reactions: uncle twist and asj5547 Sep 11, 2021 · Calculate. The minimum is about 50W/lb and 100W/lb is quite aerobatic. 5: 1 to 0. Nov 16, 2022 · Our thrust-to-weight ratio calculator offers two modes of calculation: Enter the thrust value. It is insanely tail heavy. Last edited by outsider787; Apr 30, 2010 at 02:32 PM. i know more is always better, but im looking for the standard or at least some opinions. The plane weighed 35. C_D, K, L/D. I noticed that on the dev stream, as it apparently has already been shown in previous streams, stat cards for planes had some extra useful information such as wing loading and a thrust to weight ratio. The 2 motors on 2s with 5x3 props have about 64 watts. I believe a typical t/w for a general aviation aircraft is around 0. The advantage of watts/lb is that it is easily determined by the average guy if he has a wattmeter. 5oz of thrust on a 13oz. But for RC planes, the largest "workable" size for an EDF is about 90mm, which will generate much less thrust than a large and common propeller size like a 10 inch or larger propeller. i know the wings are making lift, but im unsure the true max weight Get the Reddit app Scan this QR code to download the app now A One Stop Shop for everything RC Planes! Members Online • heurie-024. 5m wingspan and weighs about 600grams all up, it has a stall speed of about 5 or 6m/s. ship is about . Reddit . Using the ThrustHP program at 5500rpm I will get 9lb of static thrust and a thrust to weight ratio close to 1 to 1. Two main factors in this. Related Topics. Secondly, engine thrust drops off drastically as you gain Jun 11, 2019 · The largest was the Arado 555 that had 6 of my own design engines of 3. • 3 yr. 9oz) ratio is 0. Finally, calculate the Thrust to Weight Ratio using the equation above: TWR = T / W. 5-1. This is the swivel nozzle which shifts the thrust to a vertically downward direction. Join. Apr 23, 2010 · Most large helicopters (the real world ones, not RC) have a payload that is usually about 1/2 of that they weigh, a thrust to weight ration of 1. Best. The 42" Curtiss Jenny biplane is 13 oz. Plus a static thrust figure is not equivalent to thrust while moving. 。 With the 12x8 on motor spec sheet i get about 4000-4200g of thrust. 30 6lb = . Apr 1, 2007 · what is the right thrust to weight ratio for an rc plane with 1 rear mounted motor? The only thing that counts is the thrust to drag ratio. Generally, a moving jet engine produces less thrust than a static one. 7:1 for this motor and weight combination. for $2-300 you wont find much . 200+ mph Club. reReddit: Top posts of March 9, 2021. 250watts/lb (or better) = fighter like performance. Aug 8, 2013 · A slowflyer might have a 1:4 T/W ratio and an extreme racer a 4:1 ratio. Unless you are a helicopter. If your model has 2:1 you'll be able to vertical climb it like crazy. Posted by u/oppressive_tiger910 - 4 votes and 2 comments "Typical designs featured variable-sweep wings, weight over 60,000 pounds (27,000 kg), included a top speed of Mach 2. RC plane RC vehicle Hobbies. The instructions state that the built weight should be between 12-14 oz. I understand that all planes are different and that because of that it is more difficult to pin point needed engine size. 0:1 on landing. 4: 1 on trainer models from 0. 5 Kg so had a thrust to weight ratio of 0. Apr 21, 2020 · But with that weight it will be hard to find the motors, i think. 3kg it still flew off 1kg of thrust. 5 thrust-to-weight ratio ? 6000g or so? If it was it's lower kv brother , 4xx-5xx kv , it could spin the 15x10 prop , but the 660kv is too much. The tricky part is the motor i bought supplies only 285 grams of thrust. 3/1 or thereabouts. Takeoff. 5:1 thrust:weight is a nice number for quads like this which cruise around for FPV and video work. I don't know what that happens to be but for 3D acrobatic planes it is not at all uncommon to have a 2. 075/lb 4lb = . 37:1, which will give strong climbs and rapid acceleration. I will not hesitate to fly any plane, if the static thrust is 1/2 plane weight or more. 70-90 watts per pound; Trainers and slow flying scale models. 5/1. ! A friend of mine has the Tiger 400, aniemic on original power. ft. It’s common for fighter aircraft to be capable of this for maneuverability Aug 3, 2023 · Question about flying weight and thrust to weight ratio. Probably want to just do two channel. So, for fixed wing, what is the minimum thrust is required for cruising, not for take off? Thanks. Fly? Maybe. I'm running the Nov 4, 2020 · As you mention, planes can fly with a fairly low thrust to weight ratio. 2 = 0. The values given above are inserted into the equation below and the solution is calculated: TWR = 10,000 / 500 = 20 (N/kg) Aug 3, 2009 · Static thrust isn't a great measure of performance to be honest, as it is just that, static, and will change a great deal depending on pitch, airspeed, prop type and so on. Fo for 70W/lb or more and don't worry about thrust. In order to get reasonable climb and acceleration capabilities, the Static Thrust should be at least about 1/3 of the planes' weight. It isn't capable of vertical climb. I think 15 oz. 8+ for stage 3 (Kaman line and up) but anything above 1. Feb 16, 2020 · Feb 16, 2020. If this is a plane that is built as scale from an actual plane then look at the amount of thrust the original has for a starting point for your own model. A plane can fly with less than a 1:1 ratio but it won't fly very well. 149. Hello guys, I am in the process of designing an F-35B Rc aircraft using a 3D Printer. ----- You probably want all your electronics to run on the 18650 lithium-ion cell. Pitch speed = 41 mph. May 13, 2004 · Incidently, most more common aerobats have a t/w of about 0. Jun 20, 2003 · The static thrust (46. The other issue is that pitch-speed is important - the prop needs to be producing thrust when the plane is moving, not stationary. Provide the weight of the aircraft. The Thrust-To-Weight Ratio would be 0. Ideally it is about 2:1. r/SpaceXMasterrace Reddit . Note: Weight (in Newtons) is equal to mass times the gravitational acceleration rate of 9. Rc Glider Discus Rc Model Model Airplanes Radio Control Gliders Aircraft able to control the power of each flap, each one producing an added thrust. I bought a himax 2015-4100 gear motor assuming it would have plenty of power for 3d purposees. Optimum AoA depends on airspeed, structural/pilot limits and whether sustained or instantaneous turn performance is preferred, aircraft weight and air density among other factors. 63:1, which will result in short take-off runs, and no difficulty taking off from grass surfaces (assuming sufficiently large wheels). Would a 14lb turbine in my SM 1/8th F-16 make that happen? Aug 8, 2013 · Now I'm afraid it is overpowered but I guess it better to be over than underpowered. 5/1-2/1 for 3D. 3D acrobatic planes have huge ailerons. When the torpedoes are put on, the weight exceeds thrust. The plane is not finished but my goal wt is 9 to 10 lbs. Too nice outside. 330 W/kg = all out performance. Build Dec 15, 2011 · here's a rough and no doubt argueable rule of thumb: 150watts/lb = flyable in a clean EDF airframe. What would probably be a better comparison would be your wing loading and thrust to weight Jan 7, 2021 · Merv said: The amount of thrust needed depends on how you want to fly. Limiting your delta v change, drag won't be factor until the force of air "felt" on the front cross section of the aircraft is a little less than about 50% of your aircrafts total weight. #1. I think he meant 'full-scale world', not 'real world'; the first full-scale, fixed-wing aircraft to reach and exceed 1:1 was the F15 Eagle, and fighters flew just fine before that. RC Warbirds and Warplanes - Thrust to Weight ratio? - I am putting together a Hellcat with a 61 wing span that is going to weigh about 9 lbs. You don't see too many guys doing crazy acrobatics on Flamewheel style 450's. All the parts are printed using a 3D printer. A war bird or one with a little zip will be 100-150%. 3 Many of my planes take of at less than 50% and fly normal at very low throttle. The tool will calculate the thrust-to-weight ratio. 7m Weight without battery and trim weights: 700g Root airfoil: goe756 Tip airfoil: mh60 Wing Twist: -5° Planned battery 3s 2200mah Motor a2212 1000kv Propeller 11"6. 200watts/lb = performs more like a jet. What kind of rc plane could i make with that thrust to weight ratio? 1. 75. 。The front set and the back set of wings have similar dimensions. You do realise that what you propose to do is going to add quite a bit of weight, (as a percentage of the original weight). (This implies you are already *at* the terminal velocity at the start - as if shot from a gun) At terminal velocity (F=thrust, g= gravity constant, v = velocity, k=shape constant) F=m*g+k*v^2. Amps will be about 100 in the air with slightly less thrust (due to installed ducting internal drag losses) It will fly the JHH Hawk with good authority. A fair bit of the thrust goes into maintaining your current speed due to drag. Aircraft Input Parameters. So that above 50% throttle it can hover easily. With all that wing area, you can carry a wide range of power systems. High performance military jets have thrust to weights in excess of 0. 5 lbs thrust @ 95 A (on the bench). The weight (N) is calculated by multiplying the mass in kilograms (kg) by the acceleration due to gravity (m/s^2). To calculate this with the weight of your model plane 2. 7. #7. That Means if the weight is 2 kg means thrust by all four motors is shuold be 4 kg at 100% throttle. with the 250kv motor your current draw @ 6S for cruise @20m /s would be arround 7Amps, but with minimal margin to play with. 5, but that's orbital rocket levels of thrust. I'm sitting somewhere around 1. ) wing loading (weight of plane vs. 38. Depends on wing load: more than enough for a glider, obviously not enough for a helicopter. But barely. A static thrust to weight ratio greater than 0. Jan 29, 2018 · I had assumed that a 1:1 ratio would enable a plane to hover, what about 2:1? Yes, you can hover at 1:1 but it is not very comfortable as there is little margin to fly out and recover. 50. of thrust is needed for a 10lb. Pulse jets can’t be throttled and they drink gas so fast you barely get to fly. , 4 stroke glow engine, with an 18x6 prop. It's pretty impressive that small scale can have much higher lift to weight ratios. Note that the thrust can also be measured in pound-force (lbf), provided the weight Apr 4, 2013 · Power to weight ratio for RC planes in metric. The weight you see is the airframe with torpedo mountings. 9:1 thrust to weight ratio. S. 7 for stage two (about 6000m) and 1. First off, drag. i. Add a Comment. A thrust-to-weight ratio of more than 1 means it’s capable of climbing vertically aka straight up. 75 thrust to weight ratio Can anyone suggest me to change in the plane My plane weight is 710 g, Prop is 10inch, Battery 2200mah, Wing span 1. As an example of the bare minimum, many years ago, I powered a Goldberg Gentle Lady (2-meter glider) with a Cox . I have a question regarding the thrust to weight ratio of a small rc plane. On an RC plane will get the best thrust to weight ratio with a propeller. 5ozs (5% of the weight). May 20, 2006 · RE: Thrust to weight ratio ??? I would suggest up to 1/1 plane weight for sports flying, 1/1-1. Note: For Airplane Weight, if more than one value is given, find and use the average of the values. 020 gas engine. Motors/Props on RC planes can have a significant impact on stall speed in terms of power, prop wash and torque with the need to compensate with control surface deflection. Got lazy and did not paint the bottom grey. • 11 days ago. Defines a sort of "lift sensitivity. Commercial aircraft static thrust requirement ( just to get the plane flying ) ! Reportedly to be 0. Here is a FT thread with more information. A 3d printed propeller (just a test, not prepped nor designed for this setup) gave 40g static thrust. 5:1 static thrust:weight, for climb rate of only about 13m/s - pitch speed limited. Designed for carrier take off, so it should handle all but the shortest runways ok. So a 20 lb. Considering my FT explorer which ended up weighing 1. Thrust at 75% to 90% of the weight will be sporty,anything more is nice too, if the airframe can take it. Click on the advanced mode and select an aircraft or engine from the list. TW =/= Residual Thrust to Weight. 2m, Motor 1400kv I prefer a TWR (thrust weight ratio) of about 1. Obviously gliders can fly with no power at all, so there's no critical lower-limit. 15:1 for passable maneuverability. Less weight per wing area will make a plane enjoy slow flight, but becomes "twitchy" at high speed. /sq. And because it’s military will have enough thrust to weight ratio to do a bunch of crazy shit but closer to normal than let’s say the F22 or even F18. 1. While the diameter may be large and air output might feel like it, I highly doubt this has the output needed for a usage thrust to weight ratio. My aircraft will have just over 400mm squared of wing space not including aerons. Aka When it’s weight is in line with the thrust. 5 when launching 1. BossChase: Beginner Training Area (Aircraft-Electric) 8: May 18, 2018 06:14 PM: Thrust to Weight Ratio??? sapok: Beginner Training Area (Aircraft-Electric) 1: Feb 23, 2002 05:21 AM: Thrust to weight ratios (twin series or parallel) Van: Electric Power Systems: 9: Feb 17, 2002 10:46 AM Excellent control laws allow a pilot to keep the plane at angles of attack that optimize for (instantaneous or sustained) turn rates with relative ease. with the 500kv motor your current draw @ 6S for cruise @20m /s would be arround 9-11Amps at 32% Throttle. Wingspan: 1. 7 comments. " More weight per wing area means a less effective wing, so will provide a smooth ride for a fast plane but cannot fly slowly. 2 Kg, the calculation would look as follows. Is that enough for a pattern plane or should I look for a better motor with at least 1. The airfoil/shape of the aircraft is what allows it to go up. would be a good weight for continuous long duration flight without counting on thermal lift. Thrust = Weight/cosine (30 degrees) which is the rotor thrust required to support the produce enough vertical lift to support weight of the aircraft when it's tilted forward by 30 degrees for Jan 19, 2011 · Thread OP. That means there's a drag force in addition to the weight of the jet for the engines to overcome. xs gy cu pp ij nj uk ff zd xo