Re: Messerschmitt Bf 109

par Tropique3 Mer 03 Mar 2010, 11:05

Bf 109F sub-variants

F-0, F-1, F-2

As the DB601E was not yet available in numbers, the pre-production F-0 (the only F variant to have a rectangular supercharger intake) and the first production series F-1/F-2 received the 1,175 PS (1,159 hp, 864 kW) DB 601N engine driving a VDM 9-11207 propeller.

The F-0/F-1 and F-2 only differed in their armament; the F-1 being fitted with one 20 mm MG FF/M Motorkanone
firing through the engine hub, with 60 rounds.

The F-1 first saw action in the [Vous devez être inscrit et connecté pour voir ce lien] in October 1940 with JG 51.

The most experienced fighter aces like [Vous devez être inscrit et connecté pour voir ce lien] were the first ones to fly the first Bf 109 F-1s in combat in October 1940.

A total of 208 F-1s were built between August 1940 and February 1941 by Messerschmitt Regensburg and the Wiener
Neustädter Flugzeugwerke.

par Tropique3 Mer 03 Mar 2010, 11:06

Bf 109 F Battle of Britain

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par Tropique3 Mer 03 Mar 2010, 11:08

The F-2 introduced the 15 mm Mauser [Vous devez être inscrit et connecté pour voir ce lien] with 200 rounds.

The Motorkanone was supplemented by two synchronized 7.92 mm (.312 in) MG 17 machine guns mounted under the engine cowl, with 500 rpg.

As the harder-hitting 20 mm version of the same gun become available, a number of F-2s were retrofitted with it in the field.

About 1,380 F-2s were built between October 1940 and August 1941 by AGO, Arado, Erla, Messerschmitt Regensburg and WNF.

No tropicalized version was built, although individual F-2s were retrofitted with sand filters in the field.

The maximum speed of the F-1 and F-2 was 615 km/h (382 mph) at rated altitude.

F-0 (Pre-production aircraft built from E series airframes, Adolf Galland was one of the few to fly one
operationally)
F-1 (Armed with 1 × 20 mm MG FF/M Motorkanone cannon and 2 × 7.92 mm/.312 in MG 17 machine guns)
F-2 (Armed with 1 × 15 mm (.59 in)[Vous devez être inscrit et connecté pour voir ce lien] and 2 × 7.92 mm/.312 in MG 17)
- F-2 trop (tropicalized version, only as field conversion)

par Tropique3 Mer 03 Mar 2010, 11:09

par Tropique3 Mer 03 Mar 2010, 11:10

F-3, F-4, F-5, F-6

The 1,350 PS (1,332 hp, 993 kW) DB 601E was used in the F-3 and F-4 model together with a VDM 9-12010 propeller with broader blades for improved altitude performance.^{[Vous devez être inscrit et connecté pour voir ce lien]}

The DB 601 E was initially restricted to 1,200 PS (1,184 hp, 883 kW) at 2,500 rpm; however, the full rating of
1,350 PS at 2,500 rpm was cleared for service use by February 1942.

The DB 601 E was able to use 87 octane "B-4" aviation fuel, despite its increased performance; while the earlier DB 601N ran on 100 octane designated as "C-3" by the Luftwaffe.

Only 15 examples of the F-3 are believed to have been produced by Messerschmitt Regesnburg between October 1940 and January 1941.

Like the F-1, the F-3 was armed with the 20 mm MG-FF/M and two 7.92 mm (.312 in) MG 17s.

par Tropique3 Mer 03 Mar 2010, 11:11

par Tropique3 Mer 03 Mar 2010, 11:13

From the F-4 onward, the new 20 mm Mauser MG 151/20 with 200 rounds was used as the motorkanone.

The first F-4s reached frontline units in June 1941.

Production lasted exactly a year between May 1941 and May 1942, with 1,841 of all F-4 variants produced.

Some of the later models were capable of mounting two 20 mm MG 151/20 cannons under the wing in faired gondolas with 135 rpg.

These were designated F-4/R1 and 240 of them were produced by W.N.F. in the first quarter of 1942.

This optional additional armament was standardized as field kit for later G and K series.

A special high-altitude variant, the F-4/Z featuring [Vous devez être inscrit et connecté pour voir ce lien] boost, was also built with a production run of 544 in the first quarter of 1942 and saw extensive use.

Finally, the Erla factory produced 576 tropicalized F-4 trop in the first half of 1942.

With its initial engine rating of 1,200 PS, the maximum speed of the F-4 (and F-3) was 635 km/h (394 mph) at rated
altitude; and with the clearance of the full rating of 1,350 PS, maximum speed increased to 670 km/h
(420 mph).

F-3 (As F-1 but with 1350 PS DB 601E engine, produced in limited numbers)
F-4 (As F-2 but with DB 601E engine, 20 mm MG 151/20 "Motorkanone" cannon replacing the 15 mm MG 151)
- F-4/R1 (As F-4, but capable of mounting two 20 mm MG 151/20 cannons in underwing gondolas)
- F-4/Z (As F-4, high-altitude fighter with GM-1 boost)

F-5 (Recon version of F-4, only two 7.92 mm/.312 in MG 17)
F-6 (Recon version of F-4, improved camera equipment)

par Tropique3 Mer 03 Mar 2010, 11:13

par Tropique3 Mer 03 Mar 2010, 11:14

Bf 109G "Gustav"

Introduction

The Bf 109 G-series was developed from the largely identical F-series airframe, although there were detail differences.

Modifications included a reinforced wing structure, an internal bullet-proof windscreen, the use of heavier, welded framing for the cockpit transparencies, and additional light-alloy armour for the fuel tank.

It was originally intended that the wheel wells would incorporate small doors to cover the outer portion of the wheels when retracted.

To incorporate these the outer wheel bays were squared off.

Two small inlet scoops for additional cooling of the spark plugs were added on both sides of the forward engine
cowlings.

A less obvious difference was the omission of the [Vous devez être inscrit et connecté pour voir ce lien] bypass outlets, which had been a feature of the F-series, on the upper radiator flaps.^{[Vous devez être inscrit et connecté pour voir ce lien]}

par Tropique3 Mer 03 Mar 2010, 11:15

par Tropique3 Mer 03 Mar 2010, 11:16

Like most German aircraft produced in World War II, the Bf 109 G-series was designed to adapt to different operational tasks with greater versatility; larger modifications to fulfil a specific mission task like long-range recon or long-range
fighter-bomber were with "Rüststand" and given a "/R" suffix, smaller modifications on the production line or during overhaul like equipment changes were made with kits of pre-packaged parts known as Umrüst-Bausätze, usually contracted to Umbau and given a "/U" suffix.

Field kits known as Rüstsätze were also available but those did not change the aircraft designation.

Special high-altitude interceptors with [Vous devez être inscrit et connecté pour voir ce lien] nitrous oxide injection high-altitude boost and [Vous devez être inscrit et connecté pour voir ce lien] cockpits were also produced.

par Tropique3 Mer 03 Mar 2010, 11:16

par Tropique3 Mer 03 Mar 2010, 11:18

The newly fitted [Vous devez être inscrit et connecté pour voir ce lien]A engine was a development of the DB 601E engine utilised by the preceding
Bf 109F-4; [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien] were increased as well as other detail improvements.

Takeoff and emergency power of 1,475 PS (1,455 hp, 1,085 kW) was achieved with 1.42 [Vous devez être inscrit et connecté pour voir ce lien] of boost at 2,800 rpm.

The DB605 suffered from reliability problems during the first year of operation, and this output was initially banned by VT-Anw.Nr.2206, forcing Luftwaffe units to limit maximum power output to 1,310 PS (1,292 hp, 964 kW) at 2,600 rpm and 1.3 atm manifold pressure.

The full output was not reinstated until 8 June 1943 when Daimler-Benz issued a technical directive.

Up to 1944, the G-series was powered by the 1,475 PS Daimler-Benz DB 605 driving a three-blade VDM 9-12087A
variable-pitch propeller with a diameter of 3 m (9.8 ft) with even broader blades than used on the F-series.

Pitch control, as on the 109F, was either "electro-mechanical"" (automatic) or "manual-electric" using a thumb-switch on the throttle lever.

From 1944 a new high-altitude propeller with broader blades was introduced, designated VDM 9-12159, and was
fitted to high-altitude variants with the DB 605AS or D-series engines.

par Tropique3 Mer 03 Mar 2010, 11:21

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Bf 109 G

par Tropique3 Mer 03 Mar 2010, 11:22

The early versions of the Bf 109G closely resembled the Bf 109 F-4 and carried the same basic armament;
however, as the basic airframe was modified to keep pace with different operational requirements, the basically clean design began to change.

From the spring of 1943, the G-series saw the appearance of bulges in the cowling when the 7.92 mm (.312 in) MG 17 were replaced with 13 mm (.51 in) [Vous devez être inscrit et connecté pour voir ce lien] (G-5 onwards) due to the latter's much larger [Vous devez être inscrit et connecté pour voir ce lien], and on the wings (due to larger tyres), leading to the Bf 109 G-6's nickname "Die Beule" ("The Bulge").

The Bf 109G continued to be improved: new clear-view cockpits, greater firepower in the form of the 30 mm (1.18 in)
MK 108 cannon were introduced in late 1943; and a new, enlarged supercharger for the DB605, a larger vertical stabilizer (G-5 onwards), and [Vous devez être inscrit et connecté pour voir ce lien] power boost in 1944.

par Tropique3 Mer 03 Mar 2010, 11:23

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par Tropique3 Mer 03 Mar 2010, 11:24

[Vous devez être inscrit et connecté pour voir ce lien], the World's top scoring fighter ace, claiming 352 victories, flew only the Bf 109G, of which he said:

It was very manoeuverable, and it was easy to handle. It speeded up very fast, if you dived a little.

And in the acrobatics manoeuver, you could spin with the 109, and go very easy out of the spin.

The only problems occurred during takeoff.

It had a strong engine, and a small, narrow-tread undercarriage.

If you took off too fast it would turn [roll] ninety degrees away.

We lost a lot of pilots in takeoffs.

From the Bf 109 G-5 on an enlarged wooden tail unit (identifiable by a taller vertical stabilizer and rudder with a [Vous devez être inscrit et connecté pour voir ce lien] balance tab, rather than the angled shape) was often fitted.

This tail unit was standardised on G-10s and K-4s.

Although the enlarged tail unit improved handling, especially on the ground, it weighed more than the standard metal tail unit and required that a counterweight was fitted in the nose, increasing the variant's overall weight.

par Tropique3 Mer 03 Mar 2010, 11:25

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Bf 109 G4

par Tropique3 Mer 03 Mar 2010, 11:26

With the Bf 109G, a number of special versions were introduced to cope with special mission profiles.

Here, long-range fighter-reconnaissance and high-altitude interceptors can be mentioned.

The former were capable of carrying two 300 L (80 US gal) drop tanks, one under each wing; and the latter received pressurized cockpits for pilot comfort and [Vous devez être inscrit et connecté pour voir ce lien] nitrous oxide "boost" for high altitudes.

The latter system, when engaged, was capable of increasing engine output by 223 kW (300 hp) above the rated altitude to increase high-altitude performance.

par Tropique3 Mer 03 Mar 2010, 11:27

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par Tropique3 Mer 03 Mar 2010, 11:29

Early Bf 109G models

G-1, G-2

The G-1, produced from February 1942, was the first of the G-series.

This was the first production Bf 109 with a pressurized cockpit and could be identified by the small, horn-shaped air intake for the cockpit compressor just above the supercharger intake, on the left upper cowling.

In addition, the angled armour plate for the pilot's head was replaced by a vertical piece which sealed-off the rear of the side-hinged cockpit canopy.

Small, triangular armour-glass panels were fitted into the upper corners of this armour, although there were aircraft in which the plate was solid steel.

[Vous devez être inscrit et connecté pour voir ce lien] capsules were placed in each pane of the windscreen and opening canopy to absorb any moisture which may have been trapped in the [Vous devez être inscrit et connecté pour voir ce lien].

The last 80 G-1s built were lightweight G-1/R2. In these GM-1 nitrous oxide 'boost' was used, and the pilot's back armour was removed, as were all fittings for the long-range drop tank.

A few G-1 flown by I./JG 1 are known to have carried the underwing 20 mm MG 151/20 cannon gondolas.

par Tropique3 Mer 03 Mar 2010, 11:30

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Bf 109 G2

par Tropique3 Mer 03 Mar 2010, 11:32

The G-2, which started production in May 1942, lacked the cabin pressurization and GM-1 installation.

Performance-wise it was identical to the G-1. The canopy reverted to one layer of [Vous devez être inscrit et connecté pour voir ce lien] and incorporated the angled head armour used on the F-4, although several G-2 had the vertical type as fitted to the G-1.

Several Rüstsätze could be fitted, although installing these did not change the designation of the aircraft.

Instead the "/R" suffix referred to the G-2's Rüstzustand or equipment condition of the airframe, which was assigned at the factory rather than in the field.

There were two Rüstzustand planned for G-2s:

G-2/R1: had one 300 L (80 US gal) drop tank beneath each wing, plus an ETC bomb rack under the fuselage, capable of carrying a 500 kg (1,100 lb) bomb and an auxiliary undercarriage unit beneath the fuselage. Also could carry a large jettisonable tail wheel, just aft of the cockpit.
G-2/R2: a reconnaissance aircraft with GM-1 and camera equipment.

The rack and internal fuel lines for carrying a 300 L (80 US gal) drop-tank were widely used on G-2s, as were the underwing 20 mm MG 151/20 cannon gondolas. Several G-2s were fitted with the ETC 500 bomb rack, capable
of carrying one 250 kg (550 lb) bomb.
The final G-2 production batches built by Erla and Messerschmitt[Vous devez être inscrit et connecté pour voir ce lien] were equipped as tropical aircraft
(often referred to as G-2 trop), equipped with a sand-filter on the front of the supercharger intake and two small, teardrop-shaped metal brackets on the left side of the fuselage, below the cockpit sill.

These were used as mounts for specially designed sun umbrellas (called Sonderwerkzeug or Special tool), which were used to shade the cockpit.

par Tropique3 Mer 03 Mar 2010, 11:33

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par Tropique3 Mer 03 Mar 2010, 11:34

A total of 167 G-1s were built between February and June 1942, 1,586 G-2s between May 1942 and February 1943, and one further G-2 was built in Győr, Hungary, in 1943.

Maximum speed of the G-2 was 537 km/h (334 mph) at sea level and 660 km/h (410 mph) at 7,000 m (22,970 ft) rated altitude with the initial reduced 1.3 atm rating. Performance of the G-1 was similar, but above rated altitude the GM-1 system it was equipped with could be used to provide an additional 350 horsepower.

With his G-1/R2, pilot R. Klein achieved 660 km/h (420 mph) at 12,000 m (39,370 ft), and a ceiling of 13,800 m
(45,275 ft).

The following variants of the G-1 and G-2 were produced:

G-0 (Pre-production aircraft, powered by a DB 601E engine)
G-1 (Pressurized fighter, powered by a Db 605A engine)
- G-1/R2 (Reconnaissance fighter)
- G-1/U2 (High-altitude fighter with GM-1)

G-2 (Light fighter)
- G-2/R1 (Long-range Fighter-bomber or JaboRei, with 2 × 300 L/80 US gal underwing drop tanks, one
  500 kg/1,100 lb bomb under fuselage, extended second tail wheel for large bombs, only prototype)
- G-2/R2 (Reconnaissance fighter)
- G-2 trop (Tropicalized fighter)

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