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Hawker Tempest Mk II


ElBarca
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Technical description:
 
Engine: 18-cylinder, air-cooled, two-row radial engine Bristol Centaurus V
Power:

  • Nominal - 2150 b.h.p. at 3000 ft in MS and 1975 b.h.p. in FS at 13 000 feet (2400 rpm and +6 lbs MP
  • Maximum - 2650 b.h.p. at SL (2700 rpm and +12 lbs) with 150 octane fuel

Propeller: 4-blade variable pitch Rotol,
Diameter - 12 ft 9 ins
 
Weight and dimensions:
Wingspan - 41 ft
Wing area - 302 sq. ft
Length - 34 ft 5 ins
Empty weight - 8 900 lbs
Take-off weigh - 11 800 lbs
 
Aircraft performance:
 
Level speed performance (WEP, radiator closed):
 
  Altitude, ft                                       TAS, mph
        0                                                   416
   12 000                                               449
 
Climb performance (WEP, radiator opened):
4700 ft/min at SL
4200 ft/min between 3000 and 8000 ft

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  • 2 weeks later...

sorry for double posting but I must ask for sources, climb performance and top speed with military power (nominal), top speed with open radiators, as well as the time allowed on WEP. thanks!

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  • 1 month later...

The maximum speeds that I have in the pilot's notes are different than the ones posted (pilots notes are using IAS)

 

  Altitude, ft                                       IAS, mph
  30 000                                               340
  25 000                                               380

  20 000                                               420

  15 000                                               460

  12 000                                               480
 

 

The Centaurus V engine is also limited to 100 octane fuel

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Those are maximum permissible speeds, not maximum speeds you will reach in level flight.

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Interesting that it has a lower VNE than the Mk V.

 

Although I think that is a rather convserative estimate for peace time as in the tactical trials it says -

 

 

Dive

49.            The two aircraft are identical.

 

 

and

 

 

FLYING LIMITATIONS

 

17. (i)    The maximum speed of this aircraft fitted with an under-wing pressure head, is restricted to 520 m..p.h. I.A.S. However, all aircraft delivered to operational units have a leading edge pressure head which will probably alter the figure quoted.
 

 

The Centaurus V engine is also limited to 100 octane fuel

 

 

It used +12 lbs boosts only permissible with 150 Octane fuel, see below -

 

 

Engine

9.             The aircraft is powered by a Centaurus V air-cooled sleeve valve engine, which has 18 cylinders staggered radially in two rows. The engine, which is mounted on eight circular flexible rubber couplings, develops 2,300 h.p. at 2700 revs. and +8 lbs. boost in M.S. gear at 5,000 ft., and 1950 h.p. at 16,500 ft. in F.S. gear. The maximum power (2700 revs, + 12 lbs. boost) at sea level is 2650 h.p. using 150 Grade fuel. The power is transmitted through an 0.4 to 1 reduction gearing to a Rotol 4-bladed metal variable pitch left-hand tractor propeller of 12 ft. 9 ins. diameter. The engine is enclosed in a circular cowling, and the cooling air enters between the cowl and spinner, no cooling fin being employed, and leads through adjustable gills on each side at the rear of the engine.

 

It's probably a peacetime stipulation.

 

The Tempest 2 didn't make squadron service until 1946, way after the war was over so no need to use 150 Octane fuel.

 

The Engine could definitely use it though. 

  • Upvote 3

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  • 1 month later...
Feel free to add 8xRP-3 rockets to the list :D I've been able to gather visual confirmation on it.
 

Tempest Mk 2

temp16.jpgtemp17.jpgtempest2.jpg

last pic is "Hawker Tempest Mk.II from No.26 Squadron, in Germany in 1946" Tempest Mk2 mounted with RP-3 rocket guide rails.

Source: http://www.strijdbewijs.nl/birds/hawker/tempest.htmhttp://www.militaryi...mpest-mkii.html

 

As for a little more cross-reference spoiler below:

[spoiler]fdsfdsf.jpg

Left pic was made in-game of the Mk2 for comparison[/spoiler]

 

Haven't found anything for the 2 x 1000lb bombs.... i did however find confirmation for the 1000lb bombs on the Tempest mk5 but not for the rockets of the mk5
[spoiler]

 

Tempest-MkV-RAF-501Sqn-SD-A-Hawkinge-Eng

"Tempest MkV RAF 501Sqn SD A Hawkinge 1944-01" The tempest MkV is clearly mounted with 2 1000 ib British general purpose bombs.

Source: link

 (little visual cross-reference on the 1000 ib British general purpose bomb below)

 

Ultracast-48002.jpg

This might be a 1/48 diecast made for models. But the bomb shown in the picture is clearly one and the same. Source: link

[/spoiler]
 
Edited by Brook_Bones
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  • 9 months later...

Interesting that it has a lower VNE than the Mk V.

 

 

You have to apply correction for speed meter error.

 

So for instance Tempest V = 540 - (extrapolated from PEC chart) 36

and for Tempest II = 480 + (extrapolated from PEC chart) 10

 

So 488 @ 12 K ft and below to 504 @ 10k ft and below; it's basically identical, roughly 0.7 mach in both cases.

 

If you look at 15K ft limit - you see a minor advantage in Tempest II favour once you factor in position error correction. In short, the aircraft have basically the same dive limitations. The limitations seemed to be tied to mach limit of ~0,7 at medium altitudes, at first glance, and a bit less at extreme altitudes.

Edited by Cpt_Branko
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