Mainstay Posted November 17, 2012 Posted November 17, 2012 Im trying to understand what the limit is on the blades before they eat/destroy eachother. Thanks
sobek Posted November 17, 2012 Posted November 17, 2012 That is dependent on a lot of factors like speed, airframe weight, how much collective you pull, how much rudder, the g-load, etc. Good, fast, cheap. Choose any two. Come let's eat grandpa! Use punctuation, save lives!
Mainstay Posted November 17, 2012 Author Posted November 17, 2012 Ok let me ask the question different. How do i prevent it from happening?
Nate--IRL-- Posted November 17, 2012 Posted November 17, 2012 (edited) Stay below 250kph if you can. Above that NEVER user Left Cyclic or Right rudder and be very very gentle with the controls.. If you hear the Vmax warning tone, drop your collective and slow down immediately to avoid intersection of the blades. The Disc made by the rotors have a portion advancing into the oncoming air and another retreating. This causes more lift on one side of the disc than the other. Because the Ka-50 blades spin in opposite directions, the advancing side of the discs cause the blades to get closer together on the right side of the aircraft. The top Disc will produce more lift on the left side (lowering the right side) and the bottom disc produces more lift on the right side (raising the right side into the lower right side of the top disc. The faster you go the more they close. Nate Edited November 17, 2012 by Nate--IRL-- Ka-50 AutoPilot/stabilisation system description and operation by IvanK- Essential Reading
Erforce Posted November 17, 2012 Posted November 17, 2012 Nate is right. As BS2 flights controls change in some patches, you probably must re-learn how to effectively control your collective. Some times ago, with 15° (or 13°) blade angle, intersection would happen very oftenly now it's seems you can max out your collective to take-off and fly straight forward. they've called it "the placebo effect" if i remember ;) at sea level, if your put your cyclic gently, you could achieve 330kph. 9/11° blades angle (depending the weather also) anyway, for a sim purpose, this is dangerous flight speed. When you fall (70-85° negative pitch), you can achieve 500-580 kph (minimal collective) in extreme situation. At 600-820 (my max speed :D), it's very difficult to recover without intersection / or crashing. Anyway, MaxIAS is a good alarm to tell you never raise collective to max. OverG, well it's worse, and you must be very very very cool. Also, AP heading control will kill your shark at high speed (300+). Fly manually ! TASK / ROLES acronyms guide Black Shark A.I. datalink guide illustrated (v1.2.4 Available on Wiki) DCS World Codex 1.1 : full units list (Speed/Weapons/Armor thickness/Threat zone/Weapon damage...) (Oct 2013) BlackShark 2 1.2.x Bug and glitches thread (v1.2.7)
Suchacz Posted November 17, 2012 Posted November 17, 2012 I highly recommend you to read this Kamov-pilot's A&Bs :thumbup: Per aspera ad astra! Crucial reading about DCS: Black Shark - Black Shark and Coaxial Rotor Aerodynamics, Black Shark and the Trimmer, Black Shark – Autopilot: Part 1, Black Shark – Autopilot: Part 2
Watari Posted November 17, 2012 Posted November 17, 2012 i am also setting the RPM to low (collective) for attack for a dive or loop, playing around and that stuff. helps alot to avoid clash/torqs. im also controlling the throttel to get full power when i need it to escape or fast climbs over short time or set to middle. i dont know how the throttle is used in RL? :matrix: =SPEED IS LIFE=:matrix: http://www.planeandpilotmag.com/speed-is-life.html
Yurgon Posted November 17, 2012 Posted November 17, 2012 Be sure to read DCS: Black Shark and Coaxial Rotor Aerodynamics over at SimHQ.
Jona33 Posted November 17, 2012 Posted November 17, 2012 The throttle is left alone in normal mode unless you lose an engine at which point you bump it up to emergency. The shark has automatic engine governors. You don't need to touch the throttle. Also, the collective does not control the RPM. It controls the angle of the blades, this forces the engines to work harder and you RPM's will lower as you increase collective. Always remember. I don't have a clue what I'm doing
Irregular programming Posted November 17, 2012 Posted November 17, 2012 Nate is right. As BS2 flights controls change in some patches, you probably must re-learn how to effectively control your collective. Some times ago, with 15° (or 13°) blade angle, intersection would happen very oftenly now it's seems you can max out your collective to take-off and fly straight forward. they've called it "the placebo effect" if i remember ;) at sea level, if your put your cyclic gently, you could achieve 330kph. 9/11° blades angle (depending the weather also) anyway, for a sim purpose, this is dangerous flight speed. When you fall (70-85° negative pitch), you can achieve 500-580 kph (minimal collective) in extreme situation. At 600-820 (my max speed :D), it's very difficult to recover without intersection / or crashing. Anyway, MaxIAS is a good alarm to tell you never raise collective to max. OverG, well it's worse, and you must be very very very cool. Also, AP heading control will kill your shark at high speed (300+). Fly manually ! This is how it has always been and there were no change in the flight model.
Mainstay Posted November 17, 2012 Author Posted November 17, 2012 Be sure to read DCS: Black Shark and Coaxial Rotor Aerodynamics over at SimHQ. very nice article ! thanks
sobek Posted November 17, 2012 Posted November 17, 2012 i am also setting the RPM to low (collective) for attack for a dive or loop, playing around and that stuff. helps alot to avoid clash/torqs. Actually, the lower the RPM, the more severe blades are going to flap. Centrifugal forces are what keeps them relatively straight. Good, fast, cheap. Choose any two. Come let's eat grandpa! Use punctuation, save lives!
Recommended Posts