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ekg

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Posts posted by ekg

  1. Regardless if flaps create lift or not, they always create drag. Only very few planes (e.g. the Do27) achieve the highest L/D ratio with the flaps partially extended.

     

    @ekg You asked about the best glide speed, and this almost always happens with retracted flaps. If you want to glide as far as possible you keep the flaps retracted.

     

    The Spitfire PN aren't very clear as they mention that at least 150mph should be maintained when maneuvering. When stretching the glide as much as possible you aren't maneuvering.

     

     

    Ah I missed that. OK so I guess the way to fly it would be to maintain 110 and when turning drop the nose to get to 150, probably to not stall the aircraft? Makes it a bit interesting if I want to circle a particular field.

  2. According to the manual, 100-120 mph IAS.

     

    What page / section? I tried looking. I saw 120 mph but that was for landing, with power?

     

    Is this intended for emergency?

     

    Gliding descent

    1. Straight gliding descent with retracted undercarriage and flaps is performed at a speed of 100-120 mph IAS; with deployed gear and flaps, 100-110 mph IAS.

    2. Avoid overcooling the engine. On lengthy gliding descents, raise the engine RPM to 2400-2500 for 5-6 seconds every 3-4 minutes.

    3. Reliable motor acceleration is guaranteed when the coolant temperature is not lower than 60° C and oil temperature is not lower than 20° C.

    4. Turning before landing approach must be done at a speed of 150mph IAS. (assuming final approach is started at an altitude of no lower than 500ft)

    5. Deploy flaps at a speed no greater than 160mph by pulling the flap deploy handle downwards.

    6. Check instruments to ensure that the flaps have indeed deployed successfully.

    7. NOTE. In case of pneumatic system malfunction and a loss of pressure (below 120 lb/in²), perform the landing with retracted flaps, setting aside compressed air for the brakes.

    8. After flaps deployment, smoothly pull the stick to reduce speed to 100-110 mph IAS, which is the normal gliding speed.

  3. Hello, I'm looking to do some emergency engine failure exercises with the spitfire. Does anyone know what the best glide speeds are in flaps up / flaps down configurations? Is it weight dependent?

     

    Looks like speed is 150 mph [when maneuvering]. Not if this is an authentic/accurate POH. On final use glide speeds (105 flaps down 110 flaps up). Looks like the procedure would be flaps up and keeping the speed between 110-160 mph. A bit of a wide range.

    http://zenoswarbirdvideos.com/Images/spit/SPIT9MANUAL.pdf

  4. Hi, I'd like to do some training exercises on some of the planes, specifically forced landing from engine failure. I'm looking for data on best glide speed and I can't find any in the manuals provided. Tables with info such as Vx, Vy, Vne, Vso, best glide in given configurations would be incredibly helpful.

  5. In the cold-start mission no matter how I set up my radio in the MiG-21bis I can't get through ATC. I believe there might have been an issue with the presets in the mission? Does anyone know for sure? If so can this be updated / fixed?

  6. I thought if you set it to metric the western planes would still use imperial in the cockpit. In external view the stats would be in metric. That's how it works for me with the F-5E. I don't own the L-39

     

    But yes I agree each plane should operate in the units it was designed for.

  7. Hopefully ED considers making this after the F/A-18. Does anyone know if there is enough information on the S variant of the Su-27 to make this possible? We can't have this module without it. It's somewhat ambiguous as to whether this can actually be done or not counting the manpower required for it. Would be nice to know.

  8. So yeah... I missed this and updated DCS 1.5 open beta. Now what do I do? I can't deactivate...

     

    I got it to work by deleting the registry key (with backup of course) at

     

    HKEY_LOCAL_MACHINE\SOFTWARE\Leatherneck Simulations

     

    and then re-entering the key to activate from scratch. This all happened after I got the latest update without deactivating the first time like it was suggested.

  9. What happens between 10,000 and 13,000 ft? I do a sustained climb ~2700 RPM boost at 12 as described in the take off tutorial. The boost starts dropping starting at 10,000 ft. I suppose this makes sense that the air is thinner so performance is worse. I try adding more power via the throttle but it has no effect which is strange. However around 13,000 ft the boost jumps way past 12 (most likely due to added throttle) almost like some sort of switch was turned on. The engine warning light turn on after I pass 13,000 ft.

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