G1 GENERAL TECH DATA
FOKKER G1 ATTACK AIRCRAFT
Citations from the Fokker G1 Mercury handbook :
The Fokker G1 is an 2- or 3- persons attack aircraft, build as an 2 engined freecarring monoplane aircaft,suited for different kinds of missions, such as:
GROUND ATTACK AIRCRAFT
FIGHTER PLANE
MEDIUM BOMBER
DIVE BOMBER
RECONNAISSANCE
The idea of an developing a multi purpose attack aircaft came from Fokker, the idea behind it not.
Also other aircraft builders around the world were developing similar aircaft around 1936 with similair specifications. The most know example is the Messerschmit Bf 110 Zerstorer. The idea of needing a multi purpose attack aircraft for the airforces is effidend by the large interest for licence building of the G1 abroad ( Spain, Denmark, Sweden ).
After Fokker build the protype with Hispano suiza engines, the Dutch airforce became interested but they wanted some changes. The most important change was to exchange the engines for Bristol Mecury VIII because these engines were already selected for the Fokker D21 fighter plane.
Fokker made an proposal for the airforce for their G1 with their specifications.
The specifications to do reconnaisance jobs meant a relative large action radius.To accommodate the observer a lot of windows were needed ( in practice the pilot had the best view ! ) To signal back the information a radio operator was needed to operate the rather large radio ( 140 pounds ) .
All this put together a large fighter platform was needed. From this probably came the designation G1, with G standing for Groot = Large
The pilot in te front cockpit, the radio operator between the 2 main spares, and in the bcak the observer, tailgunner, bombardeer.
The thought was to do recon missions with a 3 headed crew and for all other mission 2 crew members ( the tailgunner then operated the radio )
General data ( from the official handbooks ), for comparison the data from the Wasp version are added.
All data metric, for imperial data press here
|
MERCURY |
WASP |
|
|
Spanwidth |
17.16 meter |
16.50 meter |
|
Length |
10.87 meter |
10.38 meter |
|
Height |
3.80 meter |
3.35 meter |
|
Wheel track |
4.63 meter |
4.00 meter |
|
Wing surface |
38.30 meter2 |
35.70 meter2 |
|
Wing loading |
125 kg/m2 |
123 kg/m2 |
|
Power-weight ratio |
2.90 kg/hp |
2.95 kg/hp |
|
Action radius |
1500 km cruising at 4265 meter with 383 km/hour |
1450 km cruising at 3400 meter with 355 km/hour |
|
Engines |
Bristol Mercury VIII 9 cilinder radial displacement 24.9 liter 830 HP at 4100 meter |
Pratt & Whitney Twin Wasp Jr SB 4-G 14 twin row radial displacement 25.1 liter 825 HP at 0 meter 750 HP at 2850 meter |
| MERCURY | WASP | ||
|
aircraft |
2 persons | 3 persons | 2 persons |
|
Empty weight |
3330 kg | 3345 kg | 3150 kg |
|
Usefull load |
1470 kg | 1455 kg | 1250 kg |
|
Total weight |
4800 kg | 4800 kg | 4400 kg |
|
Max weight |
5000 kg | 5000 kg | 4800 kg |
Maximum speed
|
Altitude |
MERCURY | WASP |
|
0 meter |
399 km/hour | 384 km/hour |
|
1000 meter |
417 km/hour | 400 km/hour |
|
2000 meter |
436 km/hour | 418 km/hour |
|
4000 meter |
473 km/hour | 439 km/hour |
|
6000 meter |
452 km/hour | 421 km/hour |
|
7000 meter |
435 km/hour | 412 km/hour |
Climb speed
| MERCURY | WASP | |||
|
hoogte / gewicht |
4500 kg | 5500 kg | 4400 kg | 4800 kg |
|
0 meter |
13.9 m/sec | 13.3 m/sec | 12.3 m/sec | 11.2 m/sec |
|
1000 meter |
13.9 m/sec |
13.3 m/sec |
11.1 m/sec |
10.0 m/sec |
|
2000 meter |
13.9 m/sec |
13.3 m/sec |
10.6 m/sec |
9.5 m/sec |
|
4000 meter |
12.2 m/sec |
11.6 m/sec |
8.5 m/sec |
7.3 m/sec |
|
6000 meter |
8.1 m/sec |
7.6 m/sec |
6.6 m/sec |
5.5 m/sec |
|
7000 meter |
6.1 m/sec | 5.7 m/sec | 4.6 m/sec | 3.6 m/sec |
|
9000 meter |
2.2 m/sec | 1.9 m/sec | ||
Max altitude
| MERCURY | WASP | ||
| 4500 kg |
absolute 10150 meter practical 9900 meter |
4400 kg |
absolute 9300 meter practical 9000 meter |
| 5000 kg |
absolute 10000 meter practical 9750 meter |
4800 kg |
absolute 8900 meter practical 8600 meter |