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Bf 109 K-4 Quick Reference

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V-SPEEDS

Speed	Value	Description
Rotation	~175-195 km/h	Weight dependent
Climb	280-300 km/h IAS	Best rate of climb
Approach	195-210 km/h	Normal approach
Threshold	175-185 km/h	Over runway
Gear Limit	300 km/h	Max gear extended
Vmax (structural)	850 km/h	Never exceed

POWER SETTINGS

Phase	Setting
Takeoff	1.8 ATA / 2,800 RPM
Climb	1.45 ATA / 2,600 RPM
Cruise	1.15-1.30 ATA / 2,400 RPM
MW50 Emergency (3 min)	1.98 ATA / 2,800 RPM

FLAP SCHEDULE

Setting	Max Speed	Use
UP	Any	Cruise / Combat
20 deg	< 300 km/h	Takeoff (short field)
LAND (full)	< 250 km/h	Landing

ENGINE LIMITS

Parameter	Value
Max ATA (Takeoff)	1.80
Max ATA (MW50 - 3 min)	1.98
Max RPM	2,800
Oil Temp Max	85 C
Coolant Temp Max	110 C
MW 50 Duration	3 min max per sortie

KEY NUMBERS

Parameter	Value
Internal Fuel	~400 L
Max G	+7.5 (limit)
Weapons	1x MK 108 (30mm) + 2x MG 131 (13mm)
Max Crosswind	10 kts (narrow gear caution)
MW 50 Tank	85 L

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FighterWWII

AIRCRAFT BRIEF

The Messerschmitt Bf 109 is the most-produced fighter aircraft in history, with over 33,000 built, and the Bf 109 K-4 'Kurfurst' represents the ultimate development of the design. Entering service in late 1944, the K-4 combined the DB 605 DC engine with the MW 50 water-methanol injection system to produce up to 2,000 PS at emergency power, making it one of the fastest piston fighters of the war. Despite its narrow undercarriage causing many accidents, skilled pilots found it an exceptional fighting machine.

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SPECIFICATIONS

manufacturer: Messerschmitt AG
first Flight: 1944 (K-4 variant)
role: Air superiority fighter / interceptor
crew: 1 pilot
engines: 1x Daimler-Benz DB 605 DC (1,800 hp / 2,000 hp with MW 50)
max Speed: 727 km/h (452 mph) at altitude
range: 570 km (354 miles)
ceiling: 41,000 ft
weight: 3,900 kg (MTOW)

Sources: Messerschmitt Bf 109 - Wikipedia, Chuck's Guide - DCS Bf 109 K-4, Bf 109 K-4 - Warbird Alley