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Overspeed

Featured Replies

Just a small comment on overspeed.This baby is quite easy to overspeed if you don't keep an eye open. As I,m used to setting AT and not having to worry about speed on other aircraft I've been caught out twice so far. (annoying as I spent 1/2 hour setting the flight up) There doesn't appear to be an overspeed warning in the cockpit (audible)....is this accurate?

"Military Intelligence is a contradiction in terms"

Paul Yates

It should be a clacker, not 100% sure if its modelled as I havent done it yet

Had my first overspeed situation yesterday and noticed the warning is present but not very loud. So keep an eye on your instruments!

hi yea there is an audio warning sound like abit like a chime so next time u hear an chime u know its overspeed

I7-8700k,Corsair h1101 cooler ,Asus Strix Gaming Intel Z370 S11 motherboard, Corsair 32gb ramDD4,, gtx 1080ti Card,  RM850 power supply

 

Peter kelberg

Happened to me twice... The problem is that the warning comes and you don't even have one second to solve the issue, the plane is already broken to pieces... I had to turn off that option in FSX, because on sudden weather changes the plane can break...

Cheers,

Thomas

The airspeed display will turn red at Vmo (250kt), but the overspeed clacker does not come on until 253kt. Above 17,400ft, Mmo is Mach .52, and the overspeed clacker will sound at Mach .525.Nick

  • Author
Happened to me twice... The problem is that the warning comes and you don't even have one second to solve the issue, the plane is already broken to pieces... I had to turn off that option in FSX, because on sudden weather changes the plane can break...
Thats the problem... by the time I noticed and throttled back, it was too late. Perhaps some tweaking by dev is in order here, If you got the klaxon and had at least a few seconds to react that would be helpful.
The airspeed display will turn red at Vmo (250kt), but the overspeed clacker does not come on until 253kt. Above 17,400ft, Mmo is Mach .52, and the overspeed clacker will sound at Mach .525.Nick
Shouldn't the klaxon come on BEFORE Vmo/Mmo? I remember from my time as an engineer that we used to test this system on Tornado's and the horn check was -5 Mmo

"Military Intelligence is a contradiction in terms"

Paul Yates

I've read that the speed limit is due to windscreen bird strike limits, aerodynamically the aircraft is capable of a little more. My memory is bad, but I think the warning is triggered about 2 kts above Vmo and yes, definitely disable the FSX airplane-falls-apart feature, which is so utterly ridiculous.

Dan Downs KCRP

I've read that the speed limit is due to windscreen bird strike limits, aerodynamically the aircraft is capable of a little more. My memory is bad, but I think the warning is triggered about 2 kts above Vmo and yes, definitely disable the FSX airplane-falls-apart feature, which is so utterly ridiculous.
Mind you include a notice like this in the SP1 update? I had no idea about the fact that the warning sounds at approx. 2 kts over Vmo as I always cruise at around 230-235 kias.As well, what is the option to disable the "airplane-falls-apart" feature?

Erik L.

  • Author
Mind you include a notice like this in the SP1 update? I had no idea about the fact that the warning sounds at approx. 2 kts over Vmo as I always cruise at around 230-235 kias.As well, what is the option to disable the "airplane-falls-apart" feature?
I think what he was referring too was the "aircraft receives damage from stress" feature although I rather like "airplane-falls-apart" which has a better ring to it

"Military Intelligence is a contradiction in terms"

Paul Yates

Thanks for that Paul. Translating FSX is like having its own language. :(

Erik L.

The warning sounds at Vmo. The damage occurs at 2 knots above Vmo. Dan's advice is pretty solid -- but then again, you could fly the airplane in a way that avoids overspeeding it (which, to my mind, is "as real as it gets"). If you're cruising at 230-235 KIAS, you're probably going to be okay. If you're pushing up against the 250 KIAS Vmo, you're pushing your luck. (Edit: Vmo is 250 KIAS up to 17,400 feet, then decreases linearly to 214 KIAS. Still, watch your power and your airspeed.)

Best Regards,

Kurt "Yoda" Kalbfleisch

Pinner, Middx, UK

Beta tester for PMDG J41, NGX, and GFO, Flight1 Super King Air B200, Flight1 Cessna Citation Mustang, Flight1 Cessna 182, Flight1 Cessna 177B, Aeroworx B200

The warning sounds at Vmo. The damage occurs at 2 knots above Vmo. Dan's advice is pretty solid -- but then again, you could fly the airplane in a way that avoids overspeeding it (which, to my mind, is "as real as it gets"). If you're cruising at 230-235 KIAS, you're going to be okay. If you're pushing up against the 250 KIAS Vmo, you're pushing your luck.
Re the airplane damage issue, yes, it is a little unrealistic that overspeed causes the flight to end rather than some sort of system damage first. But, I'm in agreement here that reducing to a slower speed in weather is more realistic. I did the tutorial last night (finally), and when it started bouncing around, I slowed down. Call it instinct or habit from bouncing along V39 on the way to LRP at 7K and 150k. Other than a few little screw-ups (like not hitting ENTER twice on the FMS to start the flight plan and get the moving map to work), the plane flies pretty easily if you watch the engine dials. Its kind of nice to fly a bird with a lot of steam gauges again...

PMDGAirbus.gif

Doug Orvis

PP-ASEL-IA (USA), Based at KHEF

 

Picture courtesy of Kyle Rodgers

Doug,You coulda gone a little faster -- rough air speed is 190 KIAS.

Best Regards,

Kurt "Yoda" Kalbfleisch

Pinner, Middx, UK

Beta tester for PMDG J41, NGX, and GFO, Flight1 Super King Air B200, Flight1 Cessna Citation Mustang, Flight1 Cessna 182, Flight1 Cessna 177B, Aeroworx B200

Doug,You coulda gone a little faster -- rough air speed is 190 KIAS.
You know I thought someone might have replied with that comment after I posted. I was talking about my bird, which goes lower and slower. One thing I liked about the tutorial is I've flown big chunks of that route in real life. (KDXR-KHEF), and am all to familar with V39. For whatever reason, the Maryland/PA line south of LRP is permanent air mass of unpleasentness. I was doing about 230-40 for most of tutorial but was going closer to 200 in the bouncing.

PMDGAirbus.gif

Doug Orvis

PP-ASEL-IA (USA), Based at KHEF

 

Picture courtesy of Kyle Rodgers

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