2001年10月7日 · The Vref additives as recommended by Boeing (and I guess that Airbus has a similar story) are just an attempt to provide sensible guidance to help us keep sensible boundaries on how we might try to achieve the goal of a sweat free landing. OldAeroGuy, I suspect that Mutt and I will enjoy your commentaries on these sort of subjects.

2019年6月21日 · The green band is ‘on speed’ (“Approach Reference Band”) for “appropriate range of approach AOA for a Vref + 5 approach. It’s Vref +7 in your example even at the higher AOA limit of the ‘on speed’ range. The green band band covers a significant speed range and isn’t as accurate as military AOA ‘on speed’ green donuts.

2016年11月3日 · Tech Log - Vref + X and Vtgt Question. DH8 pilots anyone? - Hey guys, Im flying Dhc8 and our sop stating we must add a wind correction for Vref, at least 5kts in no Xwind, or half of Hwind value = after calculation we call that "Vtarget speed".

2008年11月6日 · 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 and 143 knots respectively. F speed: Minimum speed at which the flaps may be retracted at takeoff. In approach, used as a target speed when the aircraft is in CONF 2 or CONF 3.

2013年5月19日 · Tech Log - Landing above Vref - Hi All, Is anyone familiar with a rule of thumb for calculating landing distance when landing above Vref. We use Vref+5 as a company SOP and as most can use up to Vref+10 in gusty conditions. We can also use Vref+20 if landing with an anti-icing failure (althought the manufacturer

2012年5月8日 · Tech Log - B737 Vref Ice - Hi Folks, I understand that with selection of wing anti-ice (and TAI) that the min maneuvre speed tape and the stick shaker logic are adjusted to account for icing (ie they´re raised). Also that the FMC computed Vref is not adjusted and therefore you have to add 10 kts to Vref 15 in order to

2002年7月14日 · Thanks. Is the normal Vref of 1.3 x Vs0 based on IAS or CAS? One thought that crossed my mind was that if the air speed indicator was to suffer from large errors at the lower end of the speed range then the 33 KIAS Vs0 may be well below the Calibrated stalling speed.

2002年12月20日 · Tech Log - B747-200: Vref, V2 and Vmcg - I quote from one of my books: "Vref is included on the takeoff data card as a reference for computing enroute climb speeds. Vref varies directly with gross weight and simplifies the additives for climb speeds while V2 is influenced by Vmcg at low gross weights and would

2018年3月5日 · 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,

2007年6月6日 · Tech Log - E170/175 Vref Ice speeds - When ice is detected on the E170/175 for more than 10 seconds (approx.) the anti ice systems are switched on and amongst other annunciations, an EICAS message "STALL PROT ICE SPEEDS" in cyan is displayed.