Author Topic: er 109 g10 does 451mph?......  (Read 544 times)

Offline Badboy

  • Silver Member
  • ****
  • Posts: 1226
er 109 g10 does 451mph?......
« Reply #15 on: April 04, 2002, 05:17:08 PM »
Guys,

The top speed of the Me109G10 in AH is slightly faster than the 451mph being quoted here.

According to my own data, the Me109G10 achieves a top speed of 451.5mph at 22,200ft. (±0.1mph)  

However, it doesn't appear to be that fast on the analogue gauge. The performance appears to be spot on, but there is a calibration error in the gauge, possibly because HTC have modeled the fact that aircraft instruments were not that precise.

Hope that helps.

Badboy

Forgot to mention that was with 25% fuel
« Last Edit: April 04, 2002, 05:19:47 PM by Badboy »
The Damned (est. 1988)
  • AH Training Corps - Retired
  • Air Warrior Trainer - Retired

Offline Badboy

  • Silver Member
  • ****
  • Posts: 1226
er 109 g10 does 451mph?......
« Reply #16 on: April 04, 2002, 05:26:14 PM »
Quote
Originally posted by Wilbus
Some 5-10Mph difference, not very much but would be nice if it was spot on the AH chart (unless it is already I haven't checked).


It does match the chart.

Badboy
The Damned (est. 1988)
  • AH Training Corps - Retired
  • Air Warrior Trainer - Retired

Offline Badboy

  • Silver Member
  • ****
  • Posts: 1226
er 109 g10 does 451mph?......
« Reply #17 on: April 04, 2002, 05:37:46 PM »
Quote
Originally posted by Vermillion
If you test most planes in AH from stall speed to max speed without a dive, you will find that its quite common for the aircraft to take several minutes to accelerate the last 10mph of speed.  This is due to the nature of how drag works and the relationship between induced drag and parasitic drag.  I won't even try to explain it, but I'm sure people can suggest some website that describe it in detail.


The explanation is even simpler than you think. The acceleration is equal to the net force (thrust - drag) divided by the aircraft's mass. What happens is that as you get closer and closer to an aircrafts top speed, the difference between the thrust and drag get smaller and smaller as the thrust and drag approach equality, but the aircraft's mass stays almost the same. That means that an aircraft will accelerate ever more slowly as it gets closer to its top speed, because you end up dividing a very small number by a very big number, so it should take a very long time to get there. How long? Well in theory never :)  Needless to say, the fact that guys have noticed this, is just further testimony to the fidelity of the AH flight model.

Badboy
The Damned (est. 1988)
  • AH Training Corps - Retired
  • Air Warrior Trainer - Retired