xxJohnxx Posted January 24, 2015 Posted January 24, 2015 Since there was no reaction from you, may it be that you instructions include a specific Vref for runway requirement? Vref stands for refusal speed. Refusal speed is the maximum speed during takeoff from which the air vehicle can stop within the available remaining runway length for a specified altitude, weight, and configuration. Your t/o distance is significantly shorter than the required runway lenght. Vref? Shouldn't that be V1? At least in commercial aviation V1 is the maximum speed you can reject a take-off at (for critical failures only), Vr is the speed you rotate, and given that you have two engines, V2 is the minimum speed you have to have to safely continue on one engine in the case the other one fails. Vref, again in commercial aviation, is the approach reference speed, which you fly during approach until just before touchdown. Check out my YouTube: xxJohnxx Intel i7 6800k watercooled | ASUS Rampage V Edition 10 | 32 GB RAM | Asus GTX1080 watercooled
FSKRipper Posted January 24, 2015 Posted January 24, 2015 Vref? Shouldn't that be V1? At least in commercial aviation V1 is the maximum speed you can reject a take-off at (for critical failures only), Vr is the speed you rotate, and given that you have two engines, V2 is the minimum speed you have to have to safely continue on one engine in the case the other one fails. Vref, again in commercial aviation, is the approach reference speed, which you fly during approach until just before touchdown. Right, for commercial aviation. From my experience the term is used for refusal speed in military aviation. Edit: Found a publication (attachement), document page 7, PDF page 18.MIL-STD-3013A.PDF 1 i9 9900K @ 5,0GHz | 1080GTX | 32GB RAM | 256GB, 512GB & 1TB Samsung SSDs | TIR5 w/ Track Clip | Virpil T-50 Stick with extension + Warthog Throttle | MFG Crosswind pedals | Gametrix 908 Jetseat [sIGPIC][/sIGPIC]
xxJohnxx Posted January 24, 2015 Posted January 24, 2015 Right, for commercial aviation. From my experience the term is used for refusal speed in military aviation. Okay, thanks for pointing that out. Didn't know that! Check out my YouTube: xxJohnxx Intel i7 6800k watercooled | ASUS Rampage V Edition 10 | 32 GB RAM | Asus GTX1080 watercooled
fjacobsen Posted January 25, 2015 Posted January 25, 2015 V1 is decision speed. Up until this speed You can reject the take off, though this would only be done when something very serious occurs. It´s more ment for two engined aircraft where You can decide wether to continue the tale off or not. With one single engine out on a single engined aircraft, there is not much to decide. FinnJ | i7-10700K 3.8-5.1Ghz | 64GB RAM | RTX 4070 12GB | 1x1TB M.2. NVMe SSD | 1x2TB M.2. NVMe SSD | 2x2TB SATA SSD | 1x2TB HDD 7200 RPM | Win10 Home 64bit | Meta Quest 3 |
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