Author Topic: New Acceleration Results for AHII  (Read 1073 times)

Offline Mister Fork

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New Acceleration Results for AHII
« on: November 06, 2004, 02:19:51 PM »
My results from AHII have been completed.  There are a few surprises, and I'm able to draw a few conclusions.

Several points:
1. Notably, most aircraft have slowed down in their acceleration by an average of 3.8s or .28m/s^2.
2. All fighter aircraft accelerate an average 12% slower than AHI .
3. Both the Spitfire V and Seafire II boosted their ranking by 8, and 11 places from AHI.
4. The Yak-9U boosted its ranking by 11 places.
5. The F4U-C moved up 15 slots in acceleration.
6. F4U-4 moved down 19 places in ranking.

You can view the entire list here: Acceleration Excel Sheet

Testing Criteria
a) All aircraft were loaded with 100% fuel, minimum weapons loadouts.
b) Altitude for all tests were 1000ASL
c) Aircraft speeds were recorded from 150-250 using the E6B.
d) Aircraft speeds were brought below 140mph.  Aircraft were applied 100% full throttle and WEP engaged (if available). At 150mph TAS stopwatch was engaged.
e) Timer was stopped at 250mph TAS.
f)  Test was repeated four additional times.
g) Average of time was calculated. Scores are +/- .1s.

Acceleration Forumula
(Vf - Vo) / t  m/s^2         
(250mph - 150mph) / time         
(111.8m/s - 67.1m/s) / t  = 44.7m/s / s      

Where:
Vf = 250mph = 111.8 m/s IAS         
Vo= 150mph = 67.1 m/s IAS         
Vf - final velocity         
Vo - initial velocity         


Here is the list in rank from fastest to slowest:
Aircraft | Seconds
Me-163   15.1
Tempest   19.0
Bf 109G-10   19.2
SpitFire Mk XIV   19.7
La-7   20.0
La-5 FN   20.8
Fw 190D-9   22.2
Bf 109G-2   22.8
F4U-4   23.8
Bf 109G-6   24.0
Yak-9U   24.3
NIK-2   24.4
Bf 109F-4   24.5
Fw 109A-5   24.5
C205   24.6
P-38L   24.9
Fw 109A-8   25.3
Typhoon   25.4
SpitFire Mk IX   25.9
Ta-152   26.0
Ki-84-Ia   26.1
SpitFire Mk V   26.4
P-51D   27.0
SeaFire Mk IIC   27.1
Fw 190F-8   27.8
C202   28.0
F6F-5   28.2
P-47D40   28.3
F4U-D   28.4
F4U-C   29.1
Me-262-a   29.4
P-47D25   30.3
P-47D11   30.5
P-51B   30.7
Mosquito IV   30.8
Yak-9T   31.6
Bf 110G-4   32.2
A6M5b   33.0
F4U-1   33.1
FM2   34.0
Ki-61-I-Tei   34.1
P-40E   34.6
SpitFire Mk I   35.5
Bf 109E4   37.0
Hurricane Mk IIC   38.4
Bf 110C-4   40.7
F4F-4   46.1
Hurricane Mk IID   47.2
A6M2   47.7
Hurricane Mk I   53.2
P-40B   61.0
« Last Edit: November 07, 2004, 08:21:56 PM by Mister Fork »
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Offline Mugzeee

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New Acceleration Results for AHII
« Reply #1 on: November 06, 2004, 04:54:36 PM »
Nice work Mstrfork. Thank You.

Offline Karnak

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New Acceleration Results for AHII
« Reply #2 on: November 06, 2004, 05:10:49 PM »
What speed range are you measuring acceleration over?

Note:  We don't have a Mosquito Mk IV, which is a glass nosed, unarmed bomber.  We have a Mosquito Mk VI which is very armed.
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Offline Mitsu

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New Acceleration Results for AHII
« Reply #3 on: November 06, 2004, 06:44:21 PM »
hmmmm interesting. Ki-84's acceleration is so bad?

Offline TequilaChaser

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New Acceleration Results for AHII
« Reply #4 on: November 06, 2004, 07:46:05 PM »
does the EXCEL spreadsheet give the formula in which you obtained these numbers?

if not how did you go about calculating what plane is capable of what acceleration? and what fuel load, alt, starting speed to ending speed did you use......
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Offline GRUNHERZ

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New Acceleration Results for AHII
« Reply #5 on: November 06, 2004, 07:52:38 PM »
Again we see the C202 miracle where it gets so so much more performance than the other early model 1100hp DB601 engined planes. :)

Offline Fruda

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New Acceleration Results for AHII
« Reply #6 on: November 06, 2004, 09:38:24 PM »
Another c.202 Miracle!!

Offline Kweassa

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New Acceleration Results for AHII
« Reply #7 on: November 06, 2004, 09:57:46 PM »
Holy cow.. the Fw190D-9 is probably the most impressive increase in acceleration of all the planes... (and the Ta is still crap! :D )

Offline Easyscor

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New Acceleration Results for AHII
« Reply #8 on: November 07, 2004, 09:49:36 AM »
Great table Mister Fork, nice job.  Thanks! :aok
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Offline MANDO

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New Acceleration Results for AHII
« Reply #9 on: November 07, 2004, 10:13:53 AM »
La5 accelerates better than La7 now? :eek:

Offline eagl

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New Acceleration Results for AHII
« Reply #10 on: November 07, 2004, 02:20:12 PM »
The acceleration is from a standing start to maximum velocity.


















Oh, I'm wrong?  So what's the number measure then?
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Offline vorticon

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New Acceleration Results for AHII
« Reply #11 on: November 07, 2004, 02:33:25 PM »
Quote
Originally posted by eagl
The acceleration is from a standing start to maximum velocity.



Oh, I'm wrong?  So what's the number measure then?


looks like 0-300 OTD

Offline Kweassa

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New Acceleration Results for AHII
« Reply #12 on: November 07, 2004, 02:34:56 PM »
Lol! The P-51B is outclassed by P-47s!

Offline eagl

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New Acceleration Results for AHII
« Reply #13 on: November 07, 2004, 03:59:40 PM »
Thx vort :)
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Offline Mister Fork

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New Acceleration Results for AHII
« Reply #14 on: November 07, 2004, 08:13:22 PM »
Oops, guess I shoulda posted my criteria.

a) All aircraft were loaded with 100% fuel, minimum weapons loadouts.
b) Altitude for all tests were 1000ASL
c) Aircraft speeds were recorded from 150-250 using the E6B.
d) Aircraft speeds were brought below 140mph.  Aircraft were applied 100% full throttle and WEP engaged. At 150mph TAS stopwatch was engaged (if available)
e) Timer was stopped at 250mph TAS.
f)  Test was repeated four additional times.
g) Average of time was calculated. Scores are +/- .1s.

Acceleration Forumula
(Vf - Vo) / t  m/s^2         
(250mph - 150mph) / time         
(111.8m/s - 67.1m/s) / t  = 44.7m/s / time recorded      

Where:
Vf = 250mph = 111.8 m/s TAS         
Vo= 150mph = 67.1 m/s TAS         
Vf - final velocity         
Vo - initial velocity
TAS - true air speed
"Games are meant to be fun and fair but fighting a war is neither." - HiTech