In a magistral paper written in October 2015 by Stephen Harker on WW1 Aircraft performances, we can find the following data that are worth considering:
Fokker E Types
The Fokker monoplanes E.I–E.IV were signi?cant Luftstreitkräfte single-seat ?ghters in 1915–16. The main
sources used are JM Bruce [37] and Gray and Thetford [76, pp 82–86]. These aircraft were responsible for the
so-called ‘Fokker Scourge’, although the actual loss rates of British aircraft to Fokker monoplanes does not seem
particularly signi?cant [99, p 29, table 1-1]. Engines known to have been used include: 80hp Oberursel (E.I,
E.II prototype and training versions); 100hp Oberursel U I (production E.II and E.III); 80hp Le Rhône (E.III
experimental); 100hp Goebel Goe. I (E.III experimental); 90hp Siemens-Halske Sh. I (E.III experimental).
Performance ?gures are given in table 53.
• Cecil Lewis [108, pp 51–53] reports that rumour had credited the Fokker with the most fantastic perform-
ance. When a Fokker was captured it was ?own against available scouts: the Morane Bullet (Morane-
Saulnier Type N), Morane Parasol (Morane-Saulnier Type L or LA, two seaters?), Morane Biplane
(Morane-Saulnier Type BB), Nieuport (possibly Nieuport 16) and B.E.2c. All but the B.E.2c gave a good
account of themselves, the Morane Bullet climbed quicker, was faster on the level and out-manoeuvred
the Fokker. The speci?c model of the Fokker is not given.
•
Franz Immelmann [100, p 77] gives the Fokker E-type a top speed of 130 kph and a ceiling of about 3,500 m
which it can reach in about an hour. Franz Immelmann [100, p 143] gives the 160hp Fokker E-type a
maximum speed of 160–170kph and climb to 3,000m in 15 minutes.[100] Immelmann,F.:2009,Immelmann:“The Eagleof Lille”. Philadelphia,USA:Casemate. Englishtranslation
by Claud W Sykes, ?rst published by John Hamilton in 1935 or 1936(pay attention to the fact that the speeds in this table are in mph, while the speeds for the Pfalz in the next table are in kmh):

Pfalz E I, II and IV
The Pfalz E I, II and IV were Luftstreitkräfte single-seat ?ghter aircraft in 1915–16. The main source used is
Gray and Thetford [76, pp 183–186]. The main engine types known to have been use: 80hp Oberursel U O (E
I); 100hp Oberursel U I (E II); 160hp Oberursel U III (E IV). Performance ?gures are given in table 73.
