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SUPERMARINE SPITFIRE Mk.V PERFORMANCE


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#1 CORSNING

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Posted 15 October 2013 - 06:57 PM

SUPERMARINE SPITFIRE Mk.V 

 

I have completed the calculations on over six different complete reports. The down side is that the first four are with the Merlin 45 at boost levels of +8.8 to 9.3 lbs./sq.in. As far as I can tell, when the Spitfire five was introduced it was cleared for +12 lbs./sq.in. for at least 3 minutes of combat. If the interest is there I could post the data from these reports, but it would not be representative of the full capabilities of the Spitfire Mk.V.

 

With that being said I'll start with the data from the R.A.E. graph covering the speeds of the Spitfire Mk.V at +9, +12 and +16 lbs.

 

Altitude.Speed (mph)

Meters.+9 lbs.+12 lbs.+16 lbs.

S.L.......289....302....317

.1,000..302....318....331

.2,000..316....330....346

.3,000..330....344....360

.4,000..343....357....375

.5,000..357....372....378

.6,000..370....376....376

.7,000..370....370....370

.8,000..360....360....360

.9,000..346....346....346

Feet-----------------------------------

.5,000..310....323....339

10,000.330....344....361

15,000.351....365....378

20,000.372....376....376

25.000.364....364....364

30,000.343....343....343

 

FTH: 374.5 mph./6,326.2 m../+9 lbs.    378 mph./5487.8 m../+12 lbs.    378 mph./4,085.4 m../+16 lbs.

250px-Spitfire_mark5b_ab910_of_the_bbmf_

wikipedia


Edited by CORSNING, 18 April 2017 - 04:55 PM.


#2 CORSNING

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Posted 15 October 2013 - 08:06 PM

Report from Boscombe Down by the A.&.A.E.E. on the Spitfire Mk.Vc No. A.A.878 dated 11/25/42. Some figures have been calculated from figures given in the report.

 

Altitude.Speed/Climb

Meters..mph/fpm/minutes to altitude.

S.L.......317/3700/-----

.1,000..330/3700/--.9

.2,000..343/3700/-1.79

.3,000..356/3590/-2.66

.4,000..369/3190/-3.67

.5,000..365/2748/-5.5

.6,000..359/2330/-6.02

.7,000..354/1895/-7.61

.8,000..349/1488/-9.6

.9,000..341/1090/12.1

10,000.336/.-670/16.1

11,000.329/.-250/23.63

Feet-----------------------------

.5,000..337/3700/-1.38

10,000.357/3570/-2.7

15,000.367/3125/-5.24

20,000.359/2290/-6.15

25,000.351/1688/-8.75

30,000.341/1030/12.5

35,000.331/.-275/20.55

 

Speed FTH: 369 mph./3,963.4 m.

Climb Critical Altitude: 3,710 fpm./2,682.9 m.

 

Ceilings

Combat: 30,250 ft.

Operational: 33,845 ft.

Service: 36,500 ft.

 

Engine: Rolls-Royce Merlin 45. 1,185 hp.@ take-off / 3,000 rpm./ 54.3"Hg.(+12 lbs./sq.in.) boost. and 1,515 hp./@ 11,000 ft. / 3,000 rpm./ +16 lbs./sq.in. boost.

 

Armament: At the time of the trials:  2 x 20mm/120 rpg. + 4 x 0.303in/350 rpg. (Spitfire Mk.Vb standard armament in universal wing).

 

Combat Weight: 6,965 lbs.

 

Wing Loading: 28.77-lbs./sq.ft.

 

Power Loading: 4.597+lbs./hp.

20150806_132034_zpsxcrkstcv.jpg


Edited by CORSNING, 23 April 2016 - 04:57 PM.


#3 CORSNING

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Posted 15 October 2013 - 09:12 PM

A.&A.E.E. / Boscombe Down / Spitfire F. Mk. Vb W.3228 / Dated 5/25/43......."...has been fitted with a special Merlin 50 engine, on which the supercharger impellor was "cropped" to a diameter of 9.5"." The Maximum boost used in the trials was +18.2 lbs./sq.in.

 

Altitude.Speed/Climb

Meters..mph/fpm/minutes to altitude.

S.L.......325/4720/-----

.1,000..339/4720/--.68

.2,000..351/4316/-1.43

.3,000..347/3824/-2.2

.4,000..344/3332/-3.1

.5,000..341/2850/-4.15

.6,000..337/2366/-5.45

.7,000..330/1891/-7.0

Feet-------------------------

.5,000..346/4545/-1.07

10,000.347/3800/-2.25

15,000.342/3055/-3.7

20,000.336/2320/-5.6

 

Speed FTH: 350.5 mph./1,798.8 m.

Climb Critical Altitude: 4,720 fpm./1,173.8 m.

 

Engine: Rolls-Royce Merlin 50M. 1,230 hp.@ take-off and 1,585 hp.@ 2,750 ft./3,000 rpm./+18 lbs./sq.in. boost.

 

Ceilings

Combat: 29,140 ft.

Operational: 32,770 ft.

Service: 35,700 ft.

 

Combat Weights: 6,130 lbs. in the speed trials and 6,450 lbs. in the climb trials.

 

Wing Loading: 25.32 / 26.64+lbs./sq.ft.

 

Power Loading: 3.8675 / 4.069+lbs./hp.

 

Armament: 2 x 20mm/120 rpg. + 4 x 0.303in./350 rpg.

 

The Spifire Mk.V "officially", Jeff


Edited by CORSNING, 13 September 2015 - 06:59 PM.


#4 CORSNING

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Posted 28 October 2014 - 09:05 PM

From Mike William's excellent site: http://www.wwiiaircr...ire_21_roll.jpg
 
The first set of roll rate figures is for the Mk.V with fabric covered ailerons. The second set is for metal covered.
 
Speed:..150..175..200..225..250..275..300..325..350..375..400 (m.p.h.)
 
Fabric:....86....87....75....65....56....48....40....33....27....20         (deg./sec.) Maximum: 92 deg.sec./158 mph.
 
Metal:.....86....95..104....99....92....85....77....68....60....50....40 (deg./sec.) Maximum: 104 deg.sec./200 mph.


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#5 CORSNING

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Posted 09 January 2016 - 03:04 PM

Flying to the Limit by Peter Caygill

    

AFDU trials in late 1942 of the Spitfire Mk.Vb clipped wings.

     Rate of roll was improve considerably up to 25,000 ft.

     Response to aileron movements was much quicker.

     Wing span was reduced from 36' 10" to 32' 6".

 

Note: The standard wing Spitfire was put on the tail of a clipped wing Spitfire. In several cases the clipped wing Spitfire was able to evade so rapidly that it could reverse their positions in about 20 seconds.


Edited by CORSNING, 09 January 2016 - 04:34 PM.

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#6 Mercman

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Posted 10 September 2016 - 08:16 AM

Here is a 1941 AFDU Tactical Trial that compares combat performance of the RAF's then current Spitfire VB with the new Typhoon I.

 

http://www.wwiiaircr...ical_Trials.pdf


Edited by Mercman, 10 September 2016 - 08:19 AM.





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