Vls speed a320. Does anyone know why VLS increases and then decreases.
Vls speed a320 If takeoff weight > 76,000 kg – Do not exceed a GD speed (fig. The aviation world is using fpm (feet per minute) for measuring speed, which needs some Inhibition of speed brakes following config full - A320 . The Airbus A320 has two Flight Augmentation Computers (FAC 1 & 2) which are considered part of the Auto Flight FMGS (Flight Management Guidance System). We have tuned the VLS computation to be accurate for SOP slat/flap configurations, and I do not think it is a good idea to "screw up" the tuning for Normal conditions in order to cover extreme abnormals. It will add lots of landing distance. Tech Log - Airbus minimum selected speed (a320-340s) - Did the obligatory search but didn't find what I was after. From our complete lesson Airbus Speeds, we in this short video take a look at the low speed pro Tech Log - A320 NEO optimum altitude - Noticed that optimum altitude in A320 neo aircraft when flown it left us with a small margin between the vls and vmax not like classic A320 which gives us a wider margin. Now if above glide slope, keep flaps 2 gear down and than once established on the loc, arm approach, vs to minimum -1500fpm or greater and select a Speed brakes effect incidence opposite of flaps so AoA actually reduces. While the VLS of the ToLiss A321 Neo / Leap matches the relevant table pretty well (+- 1knt) the VLS of the ToLiss A320 Neo is always ~ 4-5 knts lower than in the table of the Ceo. You can enter an higher Vapp in the MCDU APPR page if you want a larger margin to the Vls (lowest Bottom line, understanding the lowest selectable speed is VLS is a safe speed and a smart speed in certain cases, will make you a much better Airbus pilot. When flying manually reversion to speed mode can occur at VLS-2 KTS but with full speed breaks it occurs at VLS-19(increased VLS). RomoRocket March 13, 2023, 2:23pm 1. It is important to note Conditions: Landing Runway 27, Winds 270/15, Vls 125, A320 CEO, Spot Head Winds 25kts. We know the FAC computes min and max speeds such as VSW, VLS, F speed etc. At which speed would you expect an A320 to land if almost empty? and the Approach speed or VAPP on full flaps configuration should generally show 5 knots above the VLS. This minimum selectable speed applies to all configurations, and in all flight regimes from takeoff to landing. The most common V-speeds are often defined by a particular government's aviation regulations. A few perplexing A320 questions. VLS is the speed below which you don't want to fly because you will have reduced margin, if you do. And in the A320, when you have an issue with the Slat/Flap system, aircraft speed becomes your most basic problem. Basically the aircraft needs more speed at altitude to generate the same lift you would get at lower elevations. However would the FAC speeds on the speed tape differ to that calculated by the MCDU? 2. But, yes, you would be unlikely to achieve 1500 FPM for any decent length of time. Level Flight – AP ON + A/THR OFF – Minimum Speed will be αPROT. Read the entire definition: VAPP Final approach speed Displayed on MCDU APPR page Calculated by the FMGCs Represents: Vapp = Vls + wind correction The Wind correction is limited to a minimum of 5 knots and a maximum of 15 knots. If thrust is idle at αPROT, aircraft will not maintain straight and level, it will pitch down Disclaimer: "A320 Flight Control Laws Protection" are personal notes of the undersigned for training only. Minimum Selectable Speed (VLS) - Tech Log - A320 stall recovery - Hi A320 guys Clean stall recovery at say 10000ft. You fly below your maneuvring speed but > VLS. Anyone else got this on windy approaches with the Fenix A320? The uncontrollable roll starts with AP engaged and disconnects by itself. Search. another thing is Mach control on cruising level it seems like the thrust is a little bit lazy and don't respond The dual-engine failure checklist of the Airbus A320 states that the optimum airspeed at which the aircraft can be flown is the “green dot” speed when an engine restart is considered impossible. Normally this is of no consequence if there are increments to be added to VLS as the I flew the FBW A320 for the first time in a while last night and the flight was generally great. speed corresponding to the best lift-to-drag ratio. For normal approaches. I normally just use managed speed, but when Im on the approach phase I like to manually adjust the speed dial, when I do this should I disable the auto The vertical speed provided by the SIM is 256*mps (meters per second or m/s), which is a standard unit for measuring speed. PilotJames. Flight Deck Forums. PDA. Location: Switzerland. You can see that when you use various speed brake positions: Vls dynamically adjusts. 3 × 0. Then you can select Flap 1 as you are below 230 kts, VLS will then drop and you can wind the This article is the conclusion of our theme of speed management during a flight, which began in Safety first Issue #18. For me it’s a lot more stable and easier to land. Reply 17th Jul 2012 Tech Log - A320, speedbrakes and Vls - Hi! When using speedbrake on the -320, the Vls is going up. are used in the flight control logic and to calculate the By this I mean the maximum variation of wind speed. They are load factor sensitive so vary with load factor. Note: On Airbus aircraft, this part of the curve is rather flat. It’s represented by the top of an amber strip along the airspeed scale on the Primary Flight Display (PFD). I don't think it apply to go-around phase just because if my speed below VLS between DA and runway, like 50ft AAL, due to turbulence to typhoon, then I have to initial go around. Chris Scott 20th Aug 2014 18:12 Which means VLS indicated on PFD and MCDU PERF pg will be different. The A320 vertical speed knob can be pushed in to command an immediate level off. PPRuNe Forums > Flight Deck Forums > Tech Log > A320 flap 2 VLS increase. When the auto-thrust system is active the minimum target airspeed for the A/THR is kept In this video we go into more detail about the Airbus Speeds. Cheers!Twitch - http://www. Vs1g: Vs: Vsr: FADEC Control – Airbus A320. Note: In clean configuration, the VLS with speed brakes fully extended may be higher than green dot speed or VFE FLAP 1. Log in; Register; VLS is however a manoeuvre speed. airbus. VFE : WIPERS IN USE: Max Speed – 230 Knots (applicable when the wipers are sweeping). What I stated is from that. Represented by the top of an amber strip along the airspeed scale on the PFD. It provides an estimate of the speed for best lift-to-drag ratio. Reply 24th Apr 2007, 19:57 220 kts is a good speed in the A320 as unless you are high and heavy, you can apply half speed brake and the VLS will be around 210kts. AIRLINE Volaris . Knots; Km/h; Mph; M/s; XA-VLS . FMGC (MCDU) VLS and FAC (PFD) VLS - Sometimes I see that VLS in the PFDs is significantly higher than that of the PERF page. Therefore Vls (speed) should always reduce. So I asked for F1, what led the airplane to fly at S speed, around 182kt. be/i8lLnXUQF_Y - VLS (of normal landing configuration: CONF 3 or FULL), F, S and Green Dot speeds are also displayed on the MCDU TAKEOFF and/or APPR pages. The autopilot pitches for a vertical speed of zero feet/min. September 4, 2023. Posted December 2, 2020. 320 300 280 260 100 145 131 80 60 40 160 SPD SEL 140 120 100 160 140 120 100 1 180 160 140 120 S F 240 220 200 180 220 200 180 160. The landing distance requirement is exactly what it implies, since you are increasing your approach speed due to an abnormal for example, you're checking on how much runway your specific malfunction requires you to safely land on A320_CHARACTERISTIC SPEEDS _GW COMPUTATIONS - Free download as PDF File (. - Because aircraft of the A320 family have a low-speed protection feature (alpha limit) that the flight crew cannot override, Airworthiness Authorities have reconsidered the definition of stall speed Use the Full flap VLS for speed additives after Youve properly sequenced the flight plan with correct destination. Becomes 1. I found the VLS shown on the PFD is really Tech Log - A320 Go Around speed scenario - You are on a one engine missed approach, it must be flown at 1+F at an approach climb weight of 76tons and elevation of 8000 feet, S speed is 210kts but theres a turning speed limit of 185, how can we limit the speed without violating the cardinal rule of selecting speed below It should be noted, however, that VLS The Speed Tape Restriction is showing very unnatural behavior, leading to significant difficulties. According to the Airbus A320 Quick Reference Handbook (QRH) the Vls speed for an aircraft Airbus A320. It also says slat is not a part of stall recovery but flight path recovery. Goldenrivett: think about the drag with gear down plus flaps full and speed brakes. The landing distance requirement is exactly what it implies, since you are increasing your approach speed due to an abnormal for example, you're checking on how much runway your specific malfunction requires you to safely land on. For example, an ADC will compute current AOA and may have the AOA limits hard coded therein. and I only found a topic about the 'speed' callout because the VAPP speed was too close to the VLS and sometimes the speed decreased to VLS. Age: 39. What speed does the A320 Airbus land at? VLS is indicated by the top of the amber line on the PFD speed scale (fig. The air data computers also provide input to the FACs, which further limit the aircraft speed envelope based on altitude, speed, and configuration. So when you bank or increase the load factor the alphaprot (at high altitude) may catch up to vls and cover the Vls. Other than the Vls which reflects the current situatiion at any given time. The reason for doing this is because Airbus says we should, and in fact Tech Log - A320 Characteristic Speeds - On few A320 CEO's The characteristic speeds displayed on the PFD are computed by the Flight Augmentation Computer (FAC), according to the FMS weight data (for PFD/MCDU display consistency and accuracy purposes), and aerodynamic data as a backup. 0:19. Recalibrated the flaps lever (Honeycomb Bravo throttle), not using the I flew the FBW A320 for the first time in a while last night and the flight was generally great. View Full Version : Is VLS kind of speed can't be violated in A320 family ? LegiossTypeH. 23 vs after retraction of 1 stage, 1. Skip to main content. Now mind you approach speed in an A320 should never rival that of the Space Shuttle. Dave Current System (Running at 4k): ASUS ROG STRIX X670E-F, Ryzen 7800X3D, RTX 4080, 55" Samsung Q80T, 64GB DDR5 6000 RAM, EVGA CLC Airbus A320-233(WL) with registration XA-VLS airframe details and operator history including first flight and delivery dates, seat configurations, engines, fleet numbers and names xbox, aircraft, airbus-a320. Code Y4 / VOI More than 7 days of XA-VLS history is available with an Tech Log - [A320] Descent with V/S and speedbrake. TYPE CODE A320 . My company has VLS limitation in stable approach criteria regulations, but not to mention in other flight phase like go-around. Hi. It explained some of the technical changes that the developer has made to their product line-up with the Sharklets. 31st Jan 2017, 20:36. It will help a lot when I start training for the A320 family type rating someday. More. Tech Log - Using speed brakes on a320. Example GW of 60 000 kg and a 6kt head wind will give you 60 + 75 + 2 = 137 kt Leghorn - You wouldn't add wind correction to 6kts on the bus, in your case it would be VLS + 5kts to get Vapp, no wind additive required. Tech Log - A320/321 Max Rate of Climb Speeds - Hello! Can anyone tell me how to calculate the best rate of climb speeds for the 320/321?? I am aware that entering a cost idex of "0" will give you a managed target climb speed which will privde maximum rate, but is there any rule of thumb (such as VLS + X, or Tech Log - A320 Go Around with SPD SEL - Fellow A320 Pilots, As I understand there are a few cases where a go-around may be initiated when speed is in SELected mode, ie. e. overweight landing, you fly at VLS, if then you need to go around this VLS is pretty useful when it is at or above Vmcl. Edited to say my company is not the same outfit as tom775257 (no A321's) Last edited by From your FCOM PRO-NOR-SUP-ADVWXR, "MINIMUM SPEED WITH ICE ACCRETION", the minimum speed with wing anti-ice inoperative is:. DJ77: 22nd Jul 2011 Tech Log - Airbus minimum selected speed (a320-340s) - More precisely, I would put it speedbrakes reduce stall AoA therefore V alpha max should increase accordingly, and VLS, too Level Flight – AP ON + A/THR ON – Minimum Speed will be VLS. COCKPIT WINDOW OPEN: Max Speed – 200 Knots. Is there any restrictions flying below actual flaps speed while VLS speed is well below during approach phase ? say , F speed 190 kts and we fly 180 kts without setting flaps 2? Thanks in advance. Hello all, Here is the scenario in my check: VLS : Lowest Selectable Speed. 3 buffer above the stall for the configuration, and is thus your minimum "safe" speed. Then you can select Flap 1 as you are below 230 kts, VLS will then drop and you can wind the speed back to 190kts and select Flap 2 if needed. In the United States, these are defined in title 14 of the United States Code of Federal Regulations, known as the Federal Aviation Tech Log - A320 Flap overspeed during retraction? - In case of flap retraction at 'S' spd during take off, sometimes spd increase over 230kts(flap 1 limit spd) during flap retraction. Speed is selected at exactly VLS (or maybe 2 kts below), because at that speed the flight directors (and with that all managed modes) turned off. The aviation world is using fpm (feet per minute) for measuring speed, which needs some conversions to be applied (a simple formula is multiplication the m/s with 60*3. Tech Log - A320 S speed question - Once I was flying the 320 on a terminal are, and were requested to slow down. CaptainProp is right. Fenix A320 Tutorial: Approach Speed Management with a Real Airbus Pilot! MSFSA real Airbus pilot explains why Airbus pilots perform a VLS check and why they pineteam, Airbus recommends "aim to keep the speed in the region of the target speed, so as to provide the best protection against the effect of gust on the structural limits, whilst maintaining an adequate margin above VLS"(PRO-SUP-91-10 P 1/4). Airbus A350. VLs and other speeds are multiples like 1. Does anyone know why VLS increases and then decreases. FCOM doesn't say much on this. 4 V stall, in landing configuration. What is the significance of putting in weights on the INIT B page and does that 220 kts is a good speed in the A320 as unless you are high and heavy, you can apply half speed brake and the VLS will be around 210kts. We have tuned the VLS computation to be accurate for SOP slat/flap configurations, and I do not think it is a good idea to "screw up" the tuning for Normal conditions in order to cover As announced just a few days ago, Fenix Simulations has released the long awaited Sharklets update for their Airbus A320 and A321. What is VLS on Airbus A330? (Lowest Selectable Speed) Airbus A330. You can always still reduce to VLS but lose the manoeuvring margins. 94 VS1g = 1. 23 VS (instead of 1. This is the speed required as the landing runway threshold is crossed at a height of 50 feet in landing configuration if the calculated aircraft performance is to be achieved. com/blackbox711Softwa Same here. Log in; Register; Forums. FCOM 3. Myself, personally, though I always set my VAPP to be 10 knots above VLS. “at low speeds, if a rapid avoidance manoeuvre is re- quired to avoid terrain, windshear or another aircraft, it is safe to rapidly pull the sidestick fully aft and/or bank and Actually the lowest speed you can select on the FCU is 100kts, but with autothrust engaged it will not let the speed fall below VLS even if you have a lower speed set in the window. The proper technique is to select flap one and keep auto thrust on to keep reducing speed and have margin against VLS with auto thrust on. Flight- MROC-MHRO When approaching runway 07 of MHRO my VLS= 132 knots and my Vapp= 137, and I was on managed speed with headwind of around 20 knots. Speed, Speed warning on final. Yes. 2 × 0. 2g buffet margin. Full flaps raises the minimum speed to about 160 (red bar in the speed display coming up with full flaps), not very comfortable for landing. DJ77: 22nd Jul 2011 17:37: Airbus A320-233(WL) with registration XA-VLS airframe details and operator history including first flight and delivery dates, seat configurations, engines, fleet numbers and names That will give you correct VAPP and VLS speeds. If not then we input an appropriate speed into the perf page. Also dropping the gear early will help. VLS really means the lowest achievable speed with the autothrust engaged, you can fly Airbus say that VLS is the lowest selectable speed, but you can actually select 100 kts. 7. TAXI SPEED: Tech Log - Selected Speeds on A320 - Why is it that even the VApp is SELECTED in case of failures like Dual hydraulic and Slats/Flaps jammed in the A320. Members; Vs1g, Vs and Vsr Speeds Explained! John 3 years ago Airbus A320, Pilot Notes. Reply. I understand that Vref on the 320 =VLS +5KTS+1/3 of the Tech Log - A320 flap 2 VLS increase - Does anyone know why VLS increases and then decreases. Knots . Windy conditions: 1/3 steady + gusts (not to exceed 20kts total corrrection) added to Vref. Could somebody explain the relation between the Vᴬᴾᴾ speed and Here I’m performing an approach with a 10kt Headwind component in the DEFAULT a320NEO with a gross weight of ~70,000KG. On deceleration they are manoeuvring/managed target speeds. 23 VS, after retraction of one step of Tech Log - A320 /A319 Ref speeds - This has been subject to debate on several occassions and I would like to get a definitive answer. But 321 sometimes will and therefore require 1+F for go-around. I know there are significant limitations in the programming of the MCDU in the stock VLS Speed: VLS is the lowest selectable speed for the autopilot and autothrust. 000 kg/171 961 lb under ISA conditions in the following configurations: - Flaps up - Flaps 1 VLS speeds, etc already Mostly from FCOM Vol 3 performance. 04. Amadis of Gaul: 10th Apr 2017 13:03: It's #1. One issue I ran into was on approach. What in fact happens, and this has been repeated numerous times, is that a Tech Log - A320. 23 VS1g In the meantime, it is worth emphasising that the overall package of the A320 thrust and speed control was probably the best of the seven jet types I flew Therefore it will make the approach speed VLS + 5 which removes all the gust protection that should be there. VLS gives you your 1. Airbus says must use slats. txt) or read online for free. 10 is the chapter of Operating Speeds Definition. 10: Quote: VLS : Lowest Selectable speed. Post Comment Cancel reply. V LS) is slightly in the backside of the power curve. VLS is represented by the top of an amber strip along the airspeed scale on the PFD. So am I right if i can say: Airbus because . 13 vs after take off, 30 degree bank turn stall speed increase Basically the aircraft needs more speed at altitude to generate the same lift you would get at lower elevations. 60 • VLO Retraction – 220 / 0. Just a quick one. add 13 kts to the vref to get new vapp. But some The magenta D point, where the aircraft goes automatically into Approach mode is after POINT4. Config 1 = Slats 1 only. I have a QRH of mixed fleet of A320-200 and A321-251NX and refer the "IN FLIGHT PERFORMANCE" tables. The system limits autopilot (AP) and flight director (FD) bank angles during takeoff and approach phases as follows : Airbus A320 - VLS-Lowest Selectable Speed| VAPP-Final ApproachSpeed|VLS & VAPPCalculation Indication👇🏻Click here 👇🏻https://youtu. Here are the details: 1. 13 VS during (PRO-SUP-10), take a look at the Vs - stall speed: Authorities allow aircraft of the A320 family to use the following factors: ‐ V2 = 1. - I like to point out that I am just getting started out on the a320, and just looking for some insight on usage of speed breaks. tv/blackbox711Follow me on Twitter - https://twitter. You can’t go too slow, and you can’t go too fast. Thanks to everyone who has Auto Crash Reporting turned on in the App! Fixed incorrect VLS factors for A320; Fixed Tech Log - A320 Flap Cong on MCDU in Emergency - Dear Sirs, In my company during emergency operation; if procedures required to land with flap confg 3, we do not select confg 3 on the mcdu. 54 TYRE SPEED: Maximum Ground Speed – 195 Knots WIPERS IN USE: Max Speed – 230 Knots (applicable when the wipers are sweeping). View Full Version : A320 flap 2 VLS increase. Airbus A320 Knowledge VLS = 130kts. Vapp: 125+5 = 130; GS Mini: 130 – 15 = 115 (minimum ground speed that aircraft will maintain) The A320 NEO has different speed management characteristics compared to the CEO due to the presence of the Lift Improvement Package (LIP) in the NEO, which is Ask an average A320 pilot to define Green Dot speed and you’re likely to get some highly entertaining, generally vague and mostly incorrect responses. Aircraft Approach Categories (based on threshold speed) Adam 3 months ago. Computed by the FAC, based on aerodynamic data, and corresponds to 1. If you speed select green dot on the A320, then, when you go round the corners the Vls comes up to meet the selected speed and the engines have to wind up to loads of fuel flow in order to maintain the speed - plainly not sensible. The reason for doing this is because Airbus says we should, and in fact Just a quick one. Boeing 787. See FCOM Volume 3, LIM-13 SPEED From a320 FCOM 3. The flight crew may modify Vapp through the MCDU. Boeing 737. If you want to insert your computed Vapp as a reference in the PERF page then, it is Vref (always = Vls CONF Full) + 16 + appr cor. The V1 / V2 / VR speeds aren't calculated however. The Green Dot speed is very stable on the PFD, unlike for example VLS which is a function of G (bank included), mach number and speed brake position. As was said before, some failure, i. However, it is not known whether the “green dot” speed would still A320 will never be approach climb gradient limited in config2 overweight G/A. This is because the “green dot” speed maximizes the power-off glide range in wings-level flight. 1st Feb 2017, 23:18 #11 Polorutz . For A320 a very crude formula is given: below 20000ft 2 x weight in tons + 85kts, above 20000ft add 1kt/1000ft. Understanding Visual Illusions for Pilots: Navigating the Hidden Challenges. 137 knots seems like a reasonable approach speed in the A320. The vertical speed provided by the SIM is 256*mps (meters per second or m/s), which is a standard unit for measuring speed. In addition, VLS increases with speed brakes extension. Our objective is to cover descent from cruise altitude down toward the destination airport and prepare the aircraft for its approach and landing. sidfadc. We are entering into the descent phase. An A320 at 64 tonnes (MLW = 66t): Vref, flap full, is 134 knots and Vref, flap 3, is 139 knots, so the normal approach speed is 139 knots #vls #vapp #speed #calculation #indication The Speed Reference System on the Airbus A320 acts as the primary source of speed information for various systems and components, including the flight control computers, autopilot, auto-thrust management Tech Log - A320 Angle of bank - what function/computer control the AOB of the A320 and why Single engine >>>AOB reduced to 15 degree any ref in FCOM? Log in; Register; or the current speed if higher, limited to VLS + 15 kt. If the airspeed drops below the final approach speed, more thrust is required to In this video I am explaining how the VLS is calculated, why there can be a difference between VLS in the FMS and on the Speedband, and how to adjust the VAP Vls (lowest selectable speed or Vref in landing config) + 5 knots (for autothrust) + 1/3 headwind component (limited to a maximum of 15 knots). Computed by the FAC based on FMS weight data, and on aerodynamic data as a backup, and corresponds to 1. Flying near VLS is dodgy and as has been noted before, on an intercept where the aircraft can command upto 30 degrees of bank to pick up the LOC, you could end up with egg on your face as the aircraft goes into Alpha Floor! The unreliable speed indication QRH procedure gives pitch/thrust settings in order to fly at Vls CONF 3 + 10kts. com The minimum thrust speed (V minimum thrust) usually is equal to 1. VLS is the lowest selectable speed (non-managed auto-thrust engaged). 08, 1. pdf), Text File (. 15th Dec 2019, 12:04. Therfore, I've been warned to be careful with the speedbrake, especially when heavy/slow Now, can anyone tell me what will actually happen if the pilot allows the Vls to reach and exceed the current speed? Will the PRO-SUP-10 Characteristic speeds: VLS : Lowest Selectable Speed. We don't use cards either as all the info is displayed in the FMC. What is the significance of putting in weights on the INIT B page and does that effect the speeds on the speed tape? [Archive] Inhibition of speed brakes following config full - A320 Tech Log Then, when using the speed brake you don´t have to go either 1/2 or full, a gentle gradual extension monitoring VLS and the speed trend arrow is better. 230kts From a320 FCOM 3. A blog post earlier this week shared more details on the changes coming with the Sharklets update. Tech Log - A320 FAC/MCDU Speeds - Hi All A few perplexing A320 questions. 13 VS1g ‐ VREF = 1. . So add 13kts to the vls speed on the perf approach page. OPERATOR Volaris . These notes do not sanction any Fenix A320 Tutorial: Ground Speed Mini? A Real Airbus Pilot Explains! MSFSA real Airbus pilot explains the Airbus Ground Speed Mini (GS mini) feature and how The unreliable speed indication QRH procedure gives pitch/thrust settings in order to fly at Vls CONF 3 + 10kts. VLS can be seen increasing with SB. 9th Green Dot Speed is the speed for the best lift to drag ratio as it is . If you activate the correct runway then the headwind components are resolved Takeoff, approach and landing speeds will be higher at higher elevation airports on account of the air density being lower at altitude. Knots; Km/h; Mph; Vertical speed. - Hello All Question: Descending with OP DES and green-dot-speed gives a very shallow ROD, (less than 700FPM with a standard weight) try and use speed-brake and the VLS shoots up, even worse on 321. Reply reply CanadianEH86 • Nope, I didn’t touch anything aside from adding in the qnh, temp, wind, minimums. it's a speed which allows excursions above and below without infringing minimum or limit speeds. Only, we sellect for normal operation, if we would like to land confg 3. Let's take a 66T A320 with When the A320 is in the normal flight control law (as was the case in this accident), the lower end of the airspeed tape will display unique limit speeds; VLS, Alpha Prot, and Alpha Max. com USING THE MEL ENGINE FIRE INFLIGHT F Speed Call – CONF 1 Call – F SPEED S Speed Call – FLAPS 0 Call – S SPEED Green Dot Speed Select: • OP CLIMB 6 • I believe S speed indicates the lowest speed in config 1, Minimum speed with slats out. The lowest value shown on that chart is 245 kts, considerably higher than your typical "S", "F" or Green Dot speed for the A320. 94 Welcome to my Channel! I am a real world A320 Captain who has followed along the flightsimulator development since 1992. If you look in the table for LDG CONF/APPR SPD/ LDG DIST on DRY RUNWAYS Tech Log - Is VLS kind of speed can't be violated in A320 family ? - This is one of the finer points in understanding the Airbus. VLS doesn't change with load factor, just the same as V2 or VREF do not change with load factor. Fpm . So normally after stall warning has stopped some thrust then extend slat and as speed come out of VLS start pitching up. Fpm; M/s; Wind speed. Instructor once told me better to use V/S if you want to get down VLS : Lowest Selectable Speed. VLs is graphically depicted on the speed tape. Note: If in CONF 0 VLS were 1. Speed Tape Restriction: During the approach, the speed exceeds the calculated Vls Speed. 13 VS during Authorities allow aircraft of the A320 family to use the following factors: ‐ V2 = 1. I would assume that it is the case for A320 CEO as well, as most likely this is a certification speed. Hello everyone, Been trying to find out a probable reason for inhibition of speed brakes following landing flap full configuration on the A320s ? Thank you. 4. The chart for Severe Turbulence on FCOM is identical to the one in the QRH. Boeing 777. GREEN DOT in CONF clean; VLS + 10 kt in CONF 1, 2, or 3 Questions - A320 handling in Flap 3 vs Flap Full - Hi I have been in the left seat of A320s for over 10 years and have developed the habit of using Flap 3 and Vapp of Vls +10 for an approach in expected turbulent or possible windshear conditions. Go-around with Slaps/Flaps jammed / very late Go-around (at threshold) during overweight landing etc. If you look at the landing speed table in the A320 QRH (image below), you will see that Airbus has clearly mentioned Vls is Vref when Airbus say that VLS is the lowest selectable speed, but you can actually select 100 kts. I would highly recommend the A32NX mod, but its more in depth, many systems have to be turned on initially, understood, so more opportunity to get things wrong if you dont complete checklist items (but many bugs sorted such as Mach/speed About the speed with the HYD failure: This is driven by the flap/slat configuration which is an abnormal configuration as you will have only flaps or only slats. 13 VS during takeoff or following a touch and go. Below this speed you should have Flap 2 selected. Above 20000 feet, VLS is corrected for Mach effect to maintain a 0. Recommended Posts. v1 = 149 vr = 154 v2 = 157 vapp = 158 vls = 153. 28 VS), the alpha protection strip would hit the VLS strip on the PFD. Severe Tech Log - Selected Speeds on A320 - Why is it that even the VApp is SELECTED in case of failures like Dual hydraulic and Slats/Flaps jammed in the A320. VLS: Lowest Selectable Speed. PPRuNe Forums > Flight Deck Forums > Tech Log > Is VLS kind of speed can't be violated in A320 family ? PDA. V1 is also the minimum speed at which a pilot can continue take-off following an engine failure. 2). For context: I attempted to land an A320 in a professional simulator with 263/12G37 winds approaching runways 28 and 23 but couldn't do it at all. Adam 4 months ago. GROSS WEIGHTS AND ASSOCIATED CHARACTERISTIC SPEEDS COMPUTATIONS ON SINGLE AISLE AIRCRAFT (A320 Family) Aircraft speed. Climb: (by pushing the altitude knob): the airplane will pitch up to climb at 250kt (below 10 000ft) and at ECON speed (above 10 000ft) Vertical speed: (by selecting a vertical speed value on the FCU and pulling the V/S knob) the airplane will climb with the vertical speed selected, but keep watching the airspeed, because it may fall to VLS Tech Log - A320 VS1G and conventional Stall speed - Guys, Can anybody explain me in simple Terms how the 320 VS1G Speed is calculated or what it actually means? I know that Airbus presented a new stall Speed which corresponds to the 1G flight path just before the actual stall. To find the proper definitions for A320 Family Aircraft configuration. 26th Nov 2014, 12:11 #10 safetyfirst. If the wing anti-ice is INOP and you’re picking up ice, the minimum speed is VLS +10/Green Dot. In the A320you’re looking at anywhere from 155/160 knots down to 135/140 depending on factors like landing weight, elevation, temperature, etc. The aircraft’s MAX ENDURANCE (most time aloft) speed is approximately equal to Green Dot. By Tequihua August 25, 2015 in Auto Flight, Manual Flight. I have found that in the end no more than around 1/4 should be required and also that once the speed starts going Tech Log - Approach speed A320 with unreliable airspeed - Hello, i just got a question regarding Vapp for an unreliable airspeed event in an A320. However, flap or slat extension should always result in the stall speed becoming The speed is important because it relates to asymmetric overload. Seems like the Perf page is no longer calculating the correct VLS speed, so try to increase the VAPP speed to a 2 to 3° nose up attitude. But when you are told to fly 180kts by ATC, for example, and S speed is 185kts, most punters will happily If the flight crew uses the speed brakes to increase the rate of deceleration or to increase the rate of descent, the VLS will increase as well: • The flight crew should ensure that appropriate speed margin exists before the extension of the speed brakes • If the speed brakes are extended, the flight crew should ensure that appropriate speed Any extra pilot approach speed increment must be added to VAPP, CAUTION and must be taken into account in SPD column for Landing Distance computation. GD speed is the managed speed target in CONF CLEAN The Ground Speed Mini (GS Mini) function is designed to maintain the aircraft’s energy above a minimum level by accounting for gusts and wind changes, ensuring a stable I noticed a disparity between the Vᴬᴾᴾ speed on the FMC and the managed Magenta speed when approach mode is activated on the default A320neo. 13 vs after take off, 30 degree bank turn stall speed increase is approx 1. It is the absolute minimum speed you can fly for any given configuartion. Reply reply nwgruber • • You can not engage AP with air speed below VLS. Now the overspeed alert and VLS that you see, Are real, they’re true, brother they’re the OG! See, they’re based on what’s out there, hanging right off the wing, A320 Abnormal Procedures Last Updated: 26th NOV 2024 TheAirlinePilots. It is Tech Log - A320/321 Max Rate of Climb Speeds - Hello! Can anyone tell me how to calculate the best rate of climb speeds for the 320/321?? In the event of an RA you would have to apply TOGA and maintain VLS as a minimum. It's a bit unnerving to move flaps from 3 to 1 and suddenly see Vls move above your current speed but, with both donkeys alive and kicking, you quickly get above it (at least in the sim). VLS is the lowest selectable speed for the autopilot and the autothrust. Related Articles Aircraft Performance Vmcg Vmca Vr Vs Vno Vne Alpha floor protection is an Airbus low speed protection available in Normal Law which will command full power from the engines if the system detects the aircraft is dangerously close to a stall. 1 tow = 68. This speed is entered by the crl ight preparation, and it is represented by a “1” on the speed scale of the PFD during take-off acceleration i g. I've been passive reading Aerosoft's forum and I constantly read the Airbuses support forum. Say for example VLS is 125 kts, and the reported wind is 260/50 on runway 26 (ie all headwind) then VAPP would be 140 kts as the max value of the tower headwind component would be 15kts. Airbus A330. VLS (of selected landing The MCDU calculated speeds appear to be much too fast. So, is there a problem in reducing the speed to Vls on final approach? The answer is simply no. Fenix A320 Tutorial: Ground Speed Mini? A Real Airbus Pilot Explains! MSFSA real Airbus pilot explains the Airbus Ground Speed Mini (GS mini) feature and how Please leave a thumbs up if you liked the video. It is in relation to the abiltiy of the 320,s/319,s and their ability to hold ref speed through the 1000ft gate until touchdown . 1. zfw = 62. And yes, you are absolutely correct. Is Airbus A320 a safe and decent aircraft? The plane involved in the Germanwings crash in France, the Airbus A320, is known as a relatively safe aircraft and is a workhorse of the fleet that is comparable to the Boeing 737. The final bug speed is set in the MCP speed window which is than depicted by a bug on the For the A320 The landing speed is usually calculated that way: GW (kg)/1000 + 75 + 1/3 of the head wind component. This to reduce speed quickly. 28084/256 and recording the closest integer value). Someone more familiar with the A320 could elaborate with more authority on alpha floor and other protection systems in normal law. Source: my training manual. Note: In case of strong or gusty crosswind greater than 20kt, VAPP should be at least VLS + 5 kt, The 5kt increment above VLS may be increased up to 15kt at the flight crew's discretion. 006 Safety First #21 | January 2016 Safety First #21 | January 2016 007 Technically, cruising consists of heading changes and aircraft cruise to make the right speed and fl ight level choices, the fl ight crew needs to remain vigilant to speed excursions, and be able to recover if needed. 7 lw = 68. Posts: 347 The absolute minimum speed on approach is Vls (lowest selectable speed), which is the top of the amber strip on the speed scale. Flight history for aircraft - XA-VLS . The difference between current speed and Valphaprot (or Valphamax) represents the actual margin between alpha prot and alpha max. Rumours & News; Tech Log; Terms and Endearment; VLS is however a manoeuvre speed. Conf 3 --> Conf 4 with gear down. TWR HDW Questions - A320 handling in Flap 3 vs Flap Full - Hi I have been in the left seat of A320s for over 10 years and have developed the habit of using Flap 3 and Vapp of Vls +10 for an approach in expected turbulent or possible windshear conditions. Code Y4 / VOI . This is particularly problematic as the computed Vls Speed is not being maintained, and the indicated speed rises suddenly and Updated F, S and O speed factors slightly for all variants; Updated CI calculations for A319 & A321; Updated CONFIG and MAINT menu locations to free up LSK 5R for other functions; Fixed 12 different crashes based on Sentry reporting data. The minimum final approach speed (i. In this cases if you have a late Go-around, For Overweight Landing: Do we go It is the highest of VLS + 5 or VLS +1/3 of the THWC (limited to a max of 15 knots). Ł a PROT or Note : If in CONF 0 VLS were 1. 23 of Vs1g etc Tech Log - VAPP computation: A320 Abnormal procedure - Hello everyone, During an abnormal procedure that would require a landing in config 3, do I have to add the delta VREF before or after having selected config 3 on the MCDU? In other words, is the delta VREF added to VLS config 3 or VLS or config Full? At my company, MAXIMUM FLAPS / SLATS SPEEDS GEAR DOWN SPEEDS • VLE – 280 / 0. 2: FAC will display envelope speeds on PFD based on MCDU GW and CG but ELAC will follow different speeds than what is shown on PFD. You can leave throttles in managed mode and the CL detent. Hence why I don't understand why Vls temporarily increases. 67 • VLO Extension – 250 / 0. So it seems that the A321, when it gets to the corners, stays on the right side of the drag curve and the A320 [Archive] A320 flap 2 VLS increase Tech Log. Just follow that speed and you should be good. with speed brakes even without flaps at Green Dot speed itself there is so much About the speed with the HYD failure: This is driven by the flap/slat configuration which is an abnormal configuration as you will have only flaps or only slats. My managed speed should have been at 137 knots instead it was above 140 knots, why is it like this though ? I'm looking for the stall speeds of the A320-200 @ MTOW 78. Adam 3 months ago. Join Date: Mar 2007. 1) is the engine-out operating speed in clean configuration. Without flight directors It is converted to speed and shown on PFD. I expected the Fenix a320 to maintain the speed of 220kts required at POINT1 while it crosses waypoints POINT2 and POINT3, and then slow down again to 170kts as it crosses POINT4. This article aims to highlight how the reference, limit and operating speeds are V1 is the maximum speed at which a rejected take-off can be initiated in the event of an emergency. Kind of--the air data computers do some of the computations and display those based on hard coded limits. 28 vs clean Another possibility, did you have the speed brakes extended? That will increase Vls. Any speed above Vls is safe but if you fly at Vls in turbulence for long time it can trigger alfa floor during maneuvring. Definition 1. FOR TRAINING PURPOSES ONLY PFD3 INDICATION DESCRIPTION Minimum Airspeed Limits ŁV LS is indicated by the top of the amber line and is the lowest selectable speed. twitch. Normal approach speeds is Vapp (Vref/VLs + 5). 3 times the stalling speed in the stated landing configuration and at the prevailing aircraft weight. VLS really means the lowest achievable speed with the autothrust engaged, you can fly Minimum control speed in flight, at which the aircraft can be controlled with a maximum bank of 5 °, if one engine fails, the other engine remaining at takeoff thrust (approach flap setting). Whenever you move the flap handle, the Vmax indication immediately jumps to the new value for the selected setting. Boeing. FlightDetent 3rd May 2022 02:51 Use the Full flap VLS for speed additives after Youve properly sequenced the flight plan with correct destination. According the QRH there is one line which says the "APP SPD" is VLS +10 with LDG CONF 3. 35 to 1. AIRCRAFT Airbus A320-233 . The Vls on the PFD is almost never the same as on the PERF page, albeit the difference is usually pretty Airbus A318/A319/A320/A321 (32 bit, FSX/ P3D V3) - Development halted ; Auto Flight, Manual Flight ; Speed, Speed warning on final. Strange how different companies have different views on this. Here you have the opportunity to not The purpose of the ground speed mini function is to keep the aircraft energy level above a minimum What is Ground Speed Mini? Ground Speed Mini The purpose of the ground speed mini function is to keep the aircraft energy level above a minimum value, whatever the wind variations or gusts. The ground speed mini (GS mini) function uses this calculated Vapp as a minimum approach speed to vary the approach speed with changes in headwind component. pfx ssmq qcxxo qaxtm mdsjr ardzguw rao pegsxh gwzw zpe