wickedpenguin Posted June 18, 2009 Posted June 18, 2009 Okay, I stuck my head in the wrong place and took a SAM hit. My right engine has bitten the dust. I've done the following: 1) Killed the fuel feed to the right engine 2) Set the left engine's throttle from AUTO to EMERGENCY 3) Set my collective to a point right before the POWER SET LIM lamps illuminate 4) Jettisoned my inner pylon stores to save weight (Vikhr's can't be jettisoned apparently) I figure an aircraft with two engines should be able to perform with only a single engine, albeit with significantly reduced performance. However, no matter what I do, I still slowly sink to the ground. I keep trying to trade airspeed for altitude, but I inevitably lose the battle. It's almost like the world's slowest auto-rotation. I simply cannot maintain altitude at any airspeed. Area altitude isn't a factor, as this is taking place <1000m MSL. Is the KA-50 simply included in the light twin engine aircraft mantra - "The second engine is only to get you to the scene of the crash" - or am I missing something in my procedures? Either way, they really need to create a proper a checklist for emergencies. Something similar to: http://www.stefanv.com/aviation/checklists/cessnaemergency.pdf . Something that can be memorized and enacted quickly. [sIGPIC][/sIGPIC]
zdXu Posted June 18, 2009 Posted June 18, 2009 "4) Jettisoned my inner pylon stores to save weight (Vikhr's can't be jettisoned apparently)" You probably know you can jettinson the ViKhr's (and loose weight) as well if you have stored some. Look 2 buttons right of your jettinson-switch for the inner-pylon.
AussieFX Posted June 18, 2009 Posted June 18, 2009 Hmm, you should be able to stay airborne one engine out. I shutdown one the other day to make it back to base (short on fuel) Are you setting the collective so high that you're losing rotorspeed? ~50kts should give you the most translational lift. http://en.wikipedia.org/wiki/Translational_lift
JG14_Smil Posted June 18, 2009 Posted June 18, 2009 push and hold the switch in the red square to eject Vikhrs.
Zorrin Posted June 18, 2009 Posted June 18, 2009 How heavy are you? I tend to try and keep 130km/h, if possible, IAS as that's your optimum climb speed, and according to the manual you can pull as much collective as required to maintain no less than 86% Rotor RPM - which I assume means regardless of power limit lights. Moreoever the manual's stated "service limitations" suggests 90 minutes of OEI (ie running the remaning engine at maxmium power). Personally when I lose an engine I will pull as much power as I need out of the remaining engine to get me out of trouble, if that one quits on me too then I guess I was having a really bad day... Eagles may soar, but weasels don't get sucked into jet engines.
wickedpenguin Posted June 18, 2009 Author Posted June 18, 2009 Thanks for all your replies. It's weird, because I did this successfully before on one occasion during an actual mission, and made it back to my base quite a distance away. However, I've not been able to recreate it under controlled conditions for training (i.e. just flying along and manually cutting the fuel for one engine.) Okay, so from what I'm gathering here, I should do the following checklist: 1) Cut fuel to dead engine. 2) Set throttle on the good engine to emergency. 3) Maintain >130km/h or whatever is required to maintain translational lift 4) Maintain Rotor RPM of >86% (regardless of EEG governor lights) 5) Jettison stores (thanks for the tip on how to jettison the Vikhrs) Anything else I'm missing? Another thing: are certain systems tied to a particular engine in the KA-50? For instance, in various types of fixed wing twin engine aircraft the primary hydraulics are powered by one engine and the secondaries by the other. There have been instances where jets have landed and shut down one engine to taxi more efficiently. However, when it comes time to stop they find they've had a hydro failure on the operating system and, without the other engine operating to back it up, they end up without brakes. Quite the hairy situation, especially when you're nose-to-side with a fuel truck. [sIGPIC][/sIGPIC]
McVittees Posted June 18, 2009 Posted June 18, 2009 I usually burn off all my cannon ammo as well just to make me a wee bit lighter. Hasn't helped much though... [sIGPIC][/sIGPIC] "Great minds think alike; idiots seldom differ.":pilotfly: i5 3750K@4.3Ghz, MSI Z77A GD55, 8GB DDR3, Palit GTX 670, 24" Benq@1920*1080, X52 Pro, Win 7 64bit.
hreich Posted June 19, 2009 Posted June 19, 2009 bave you enabled rotor overspeed switch on collective- key combo right alt + + keys? Okay, I stuck my head in the wrong place and took a SAM hit. My right engine has bitten the dust. I've done the following: 1) Killed the fuel feed to the right engine 2) Set the left engine's throttle from AUTO to EMERGENCY 3) Set my collective to a point right before the POWER SET LIM lamps illuminate 4) Jettisoned my inner pylon stores to save weight (Vikhr's can't be jettisoned apparently) I figure an aircraft with two engines should be able to perform with only a single engine, albeit with significantly reduced performance. However, no matter what I do, I still slowly sink to the ground. I keep trying to trade airspeed for altitude, but I inevitably lose the battle. It's almost like the world's slowest auto-rotation. I simply cannot maintain altitude at any airspeed. Area altitude isn't a factor, as this is taking place <1000m MSL. Is the KA-50 simply included in the light twin engine aircraft mantra - "The second engine is only to get you to the scene of the crash" - or am I missing something in my procedures? Either way, they really need to create a proper a checklist for emergencies. Something similar to: http://www.stefanv.com/aviation/checklists/cessnaemergency.pdf . Something that can be memorized and enacted quickly. [sIGPIC][/sIGPIC] Pilot from Croatia
graywo1fg Posted June 19, 2009 Posted June 19, 2009 in order to survive on one engine. jettison all stores like said already but if you have no airspeed when it happens you might be screwed unless you have some altitude. because if you do then dive! dive to get airspeed. the only way you can survive with one engine is to be going at least 100Kph and up, so that there is enough forward motion of the helicopter the one engine has an easier time keeping you in the air because of momentum. 9 times out of 10 i make it back when i loose an engine because i have airspeed. Or if you loose an engine when your moving fast already then just keep moving and make a slow turn back to RTB. Voice of Jester AI Death From Above =DFA= Squadron Discord - https://discord.gg/deathfromabove http://www.twitch.tv/graywo1f https://www.youtube.com/user/Lonewo1fg
RvETito Posted June 19, 2009 Posted June 19, 2009 Here's a track I just made- 1 engine takeoff, climb to 200m and landing with 100% fuel. Generaly, Ka-50 is more than able in 1 OEI operation- the main thing you have to consider is the airspeed. You should keep it between 120-150km/h, best is around 130km/h. At this airspeed the rotor requires minimum power to maintain horizontal flight- maximum ratio "available power-needed power". Also, jettison the external stores and be very gentle with the collective, especialy when you're pulling it.1OEI.trk "See, to me that's a stupid instrument. It tells what your angle of attack is. If you don't know you shouldn't be flying." - Chuck Yeager, from the back seat of F-15D at age 89. =RvE=
AussieFX Posted June 20, 2009 Posted June 20, 2009 That looked to be a very cold day at sea level. If the game is modelled correctly that can play a large role.
RvETito Posted June 20, 2009 Posted June 20, 2009 It is modelled correctly and it does matter, I assumed it by default. "See, to me that's a stupid instrument. It tells what your angle of attack is. If you don't know you shouldn't be flying." - Chuck Yeager, from the back seat of F-15D at age 89. =RvE=
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