was anything done to FW 190 A4? the speed, especially at 5000 m, is not as fast as it use to be. 5000 m 30% fuel wep off => 470km/h 5000 m 30 % fuel wep on => 488 km/h why is this?
@ exec pay attention to your avionics, please what avionics exec? i did not know, that fw190 had any avionics. or do you mean IAS vs TAS? please explain it to me. thx.
FW don't wrong. IAS:Indicater Air Speed TAS:True Air Speed Pls check, what means IAS and TAS. Regards
yes boys my mistake. i did not know the speed chart is in true airspeed, so the fw 190 a4 is just running fine . sorry. @ yellow IAS = indicated airspeed = airspeed you can get from your airspeed indicator in the plane TAS = true airspeed = airspeed corrected for some values, but biggest correction are temperature and pressure.
Nope TAS is an estimation of real speed, concerning temperature and pressure, while IAS is buggy parameter. However, IAS is th best parameter related to movement velocity could be obtained by that avionics
IAS is relevant not only to avionics, but to flight in general. For lift, stability and controllability, it doesn't really matter what your true speed is, but what the airspeed relative to the plane, relative to the air density, is. Thus, IAS. TAS is only useful for knowing how long it takes to get from point A to point B.
Nope, Mekh TAS is real speed of airplane by his longitudal axis. I don't know the english term, but in russian there are different things: TAS and (Route Speed). Route speed is a navigation parameter that could be gained from aircraft TAS, vertical speed, and the wind. And it means exactly what you said: a distance on the map divided by passage time. Id est we are ignoring vertical movements. On the other hand, TAS includes VS.
@wabwab, according to Jane's it isn't, why do you think the HUD of modern day aircraft supports a "G" (ground speed) a "T" and an "I"? Ground speed just measures your lateral movement as a projection on the ground... a bit like the domain of a mathematical function IAS is the speed as they calculate it in the Pitot tube... greetz, Zembla
But there's no real way for a WW2 aircraft to know actual groundspeed while in flight, while TAS is a simple function of IAS and altitude. Modern groundspeed indicators rely on navigational beacons or global positioning. In WW2 the best you could do was assume TAS in level flight = GS and hope the wind didn't change too much from what it was where you took off That bomber navigators did as well as they did with the limited tools available, is quite impressive.
