Die
B-17, ein schwerer Bomber zum Einsatz in größeren Höhen, absolvierte
ihren Jungfernflug im Juli 1945 als Modell 299 (inoffiziell XB-17). Es
folgten 13Y1B-17-(B-17) und ein Y1B-17A-(B-17A)-Vorserienflugzeug sowie
eine geringe Zahl von B17-B, B-17C und B17-D zur Erprobung. Das erste
Modell, das tatsächlich zum Einsatz kam, war die B-17E mit endgültiger
Leitwerksform und besserer Abwehrbewaffnung (ein 7,62-mm-MG und zwölf
12,7-mm-MGs). Die Produktion belief sich auf 512 Maschinen. Darauf
folgten 3.405 B-17Fs, die sich nur durch die ungerahmte Plexiglasnase
vom Vorläufermodell unterschieden, und schließlich die
reine Bomberversion B-17G, von der 8.680 Stück vom Band liefen.
Bei ihr hatte man die Verteidigungskapazität weiter erhöht durch einen
neuen Waffenturm unten im Bug, einen verbesserten Turm im Heck, versetzt
angeordnete Rumpftürme sowie Vorrichtung zur Mitführung zusätzlicher
Bewaffnung.
Fotos:
sya
© 2000
Der
wahrscheinlich hervorragendste Tagesbomber der Alliierten im Zweiten
Weltkrieg, die B-17 Fortress, befand sich während der ganzen
amerikanischen Kriegsteilnahme an der Frontlinie im Einsatz. Der Erfolg
der Fortress rechtfertigte die amerikanische Politik einer strategischen
Bombardierung bei Tag, und die gute Höhenleistungen der B-17 sowie ihre
außergewöhnliche schwere Abwehrbewaffnung erwiesen sich bei der Überwindung
der Luftwaffen-Abwehr als sehr nützlich. Die letzte größere Variante
der Fortress war die B-17G, die sich durch einen „Kinn“-Waffenstand
mit zwei 12,7mm Maschinengewehren auszeichnete und zum besseren Schutz
vor Feindangriffen im Mittelteil geänderte Gewehrpositionen aufwies.
Bei den B-17Gs der späteren Produktion wurde auch die
Heckgewehrposition geändert. Als die Produktion im Jahr 1945
eingestellt wurde, waren insgesamt von Modell G 4035 Stück gemacht
worden, 85 davon für die RAF. Die B-17G, die mit diesem Modell
dargestellt wird, war eines der von der 447. Bombardierungsgruppe der US
8th Air Force geflogenen Flugzeuge, ein typische Beispiel für
ein späteres Modell dieser Version. Die fehlende Tarnung und die
leuchtenden Verbandskennzeichen sind ein klarer Beweis für die
eindeutige Überlegenheit, die sich die Alliierten bis zum Ende des
Krieges erworben hatten. Die Boeing B-17G hatte vier luftgekühlte
Wright Cyclone Sternmotoren von je 1200 PS, die es in einer Höhe von
9144m bei einer Reichweite von ca. 3218km auf eine Höchstgeschwindigkeit
von 483 km/h brachten. Die maximale Bombenlast betrug 3628 kg, und die
Abwehrbewaffnung bestand entweder aus zwölf oder aus dreizehn 12,7mm
Maschinengewehren.
Technische
Daten: B-17(G), zehnsitziger, strategischer schwerer Bomber
Spannweite: 31,62m
Länge: 22,78m
Triebwerk: vier Wright R-1820-97 mit je 895 kW ( 1.217PS)
Einsatzreichweite: 5.470 km
Bewaffnung: 13x 12,7-mm-MGs vorne und seitlich im Bug, auf dem Rücken,
im mittleren und hinteren Rumpf und im Heck sowie eine Bombenlast von
7.983 kg im internen Waffenschacht
Max. Startgewicht: 32.660 kg
Höchstgeschwindigkeit: 486 km/h in 25.000 Fuß (7.620 m) Höhe
Für
viele war die 8th Air Force gleichbedeutend mit der Boeing
B-17. Aber auch die Consolidated B-24 Liberator nahm eine wichtige
Stellung ein. Die Geschwader der 91st Bomb Group erlitt im
Krieg die schwersten Verluste, konnte aber anderseits aber auch die
meisten Abschüsse verzeichnen. Zu diesem Zeitpunkt des Krieges waren
die amerikanischen Bomber den Abfangjägern der Luftwaffe ausgesetzt, so
dass sie gezwungen waren, sich Formationen auszudenken, bei denen die
schwere Bewaffnung der B-17 zum gegenseitigen Schutz eingesetzt werden
konnte. Jede Abweichung aus der Formation ergab eine Schwachstelle, die
die deutschen Abfangjäger sofort auszunutzen versuchten. Während des
Bombenabwurfs waren die Flying Fortresses am leichtesten zu treffen.
Nachdem sie die Aufmerksamkeit der deutschen Luftabwehr und der Abfangjägereinheiten
auf sich gezogen hatten, erlitten die Bomber der US Air Force über
Deutschland schwere Verluste. In den dichtgepackten Formationen konnte
man leicht von den Bombern höherfliegender Maschinen getroffen werden.
Einigen Flugzeugen gelang es, trotz schwerster Kampfbeschädigungen
wieder zu ihrem Stützpunkt zurückzukehren; der Großteil kam dort
nicht an.
Die
8th Air Force kam im Juli 1942 in England an und nahm einen
Monat später ihre Tätigkeit auf. Ihre Bomber und Jäger besaßen im
Gegensatz zu den leuchtenden Farbmustern in den späteren Kriegsjahren
den dunkel-olivfarbenen Tarnstrich.
Gegen
Ende des Krieges wurde die B-17 nicht mehr mit dem Tarnanstrich
versehen. Die Gewichtsersparnis durch den Wegfall der schweren Farbe
ergab ein beachtliches Leistungsplus.
|
History
Learn the
history of the only remaining B-17G to see combat. In addition to
it's bombing role, the "Shoo Shoo Shoo Baby" has had many different
incarnations as an airliner, aerial mapper and transporter. |
Specifications
This section
offers a chart containing the technical specifications of the
B-17G—including top speed, range, engine type and power, weight,
range, armament, serial number and even the original cost! |
The Rugged
Fortress
B-17 pilot Robert W. Browne tells of his love
for the plane that unfailingly brought him home safely. His story is
a great testament to the "Mighty Fortress."
FROM THE
WINTER 2001 WW II BOMBERS SPECIAL ISSUE |
No other bomber
has gained more fame than the
B-17. Not even being the
best bomber available at the time, it's name alone already apealled more
to the public than other names like "Liberator" or "Lancaster". A high
number of defensive guns was intended to make the Fortress be able to
defend itself, not needing additional escorts. The idea failed. Until the
Allied forces were able to produce escort fighters which could go all the
way and back, the bombers were vulnerable, resulting in heavy losses. The
first version was of pre-war vintage, and during the course of the war
this aircraft saw a large number of modifications and improvements.
Technical data on the Boeing B-17 B |
Powerplant |
4 ×
Wright R-1820-51 Cyclone with turbo superchargers, rated at 1200 hp
(894.59 kW) each |
|
Role during war |
| Heavy Bomber |
|
Length |
67
ft 10 inch |
|
Height |
15
ft 5 inch |
Empty weight |
27652 lb |
|
Operational weight |
37997 lb typical,
46178 lb max |
Wing Span |
103
ft 9 inch |
|
Wing Aspect ratio |
7.585 |
Wing Area |
1420 sq ft |
|
Service ceiling |
24620 ft |
Maximum speed |
292
mph at optimum altitude |
|
Cruising speed |
unknown |
Initial climb rate |
unknown |
|
Range |
2400 miles typical,
3101 miles max |
Fuel capacity internal |
unknown |
|
Fuel capacity external |
unknown |
Machine guns |
5 ×
0.30 inch flexible, in nose, dorsal, ventral and two waist positions 1
each |
|
Cannons |
- |
Bomb load |
8 ×
600 lb internal |
|
Torpedoes/rockets |
- |
Crew |
9:
pilot, co-pilot, bombardier, navigator, radio operator, 4 gunners |
|
Naval or ground based |
Ground |
First flight (prototype) |
28
July 1935, this version June 1939 |
|
Operational Service |
1937 - 1960's |
Manufacturer |
Boeing Aircraft Company |
|
Number produced |
12,731 total, 39 this version |
Length |
20.68 m |
|
Height |
4.7
m |
Empty weight |
12543 kg |
|
Operational weight |
17235 kg typical,
20946 kg max |
Wing Span |
31.62 m |
|
Wing Aspect ratio |
7.585 |
Wing Area |
131.92 m² |
|
Service ceiling |
7504 m |
Maximum speed |
470
km/h at optimum altitude |
|
Cruising speed |
unknown |
Initial climb rate |
unknown |
|
Range |
3862 km typical,
4990 km max |
Fuel capacity internal |
unknown |
|
Fuel capacity external |
unknown |
Machine guns |
5 ×
7.62 mm flexible, in nose, dorsal, ventral and two waist positions 1
each |
|
Cannons |
- |
Bomb load |
8 ×
272 kg internal |
|
Torpedoes/rockets |
- |
Technical data on the Boeing B-17 E |
Powerplant |
4 ×
Wright R-1820-65 Cyclone, rated at 1200 hp (894.59 kW) each
|
|
Role during war |
| Heavy Bomber |
|
Length |
73
ft 10 inch |
|
Height |
19
ft 2 inch |
Empty weight |
32350 lb |
|
Operational weight |
40260 lb typical,
53000 lb max |
Wing Span |
103
ft 9 inch |
|
Wing Aspect ratio |
7.585 |
Wing Area |
1420 sq ft |
|
Service ceiling |
36600 ft |
Maximum speed |
318
mph at 25000 ft |
|
Cruising speed |
224
mph at 15000 ft |
Initial climb rate |
Climb to 10,000 ft in 7 min 6 sec |
|
Range |
2400 miles typical,
3600 miles max |
Fuel capacity internal |
2,073 Imp gal (2,490 US gal) |
|
Fuel capacity external |
- |
Machine guns |
| 1 × .30 inch
flexible in nose |
| 2 × power
turret in dorsal and ventral position, each with 2 × .50 inch
|
| 1 × .50 inch
in each waist position |
| 2 × .50 inch
in tail turret |
|
|
Cannons |
- |
Bomb load |
Up
to 8,000 lb all internal, consisting of either:
| 26 × 100 lb,
or |
| 16 × 300 lb,
or |
| 12 × 500 lb,
or |
| 8 × 1000 lb,
or |
| 4 × 2000 lb |
|
|
Torpedoes/rockets |
- |
Crew |
9:
pilot, co-pilot, bombardier, navigator, radio operator, 4 gunners |
|
Naval or ground based |
Ground |
First flight (prototype) |
28
July 1935, this version September 1941 |
|
Operational Service |
1937 - 1960's |
Manufacturer |
Boeing Aircraft Company |
|
Number produced |
12,731 total, 512 this version |
Length |
22.5 m |
|
Height |
5.84 m |
Empty weight |
14674 kg |
|
Operational weight |
18262 kg typical,
24041 kg max |
Wing Span |
31.62 m |
|
Wing Aspect ratio |
7.585 |
Wing Area |
131.92 m² |
|
Service ceiling |
11156 m |
Maximum speed |
512
km/h at 7620 m |
|
Cruising speed |
360
km/h at 4572 m |
Initial climb rate |
Climb to 3050 m in 7 min 6 sec |
|
Range |
3862 km typical,
5793 km max |
Fuel capacity internal |
9425 liters |
|
Fuel capacity external |
- |
Machine guns |
| 1 × 7.6 mm
flexible in nose |
| 2 × power
turret in dorsal and ventral position, each with 2 × 12 mm
|
| 1 × 12 mm in
each waist position |
| 2 × 12 mm in
tail turret |
|
|
Cannons |
- |
Bomb load |
Up
to 3628 kg all internal, consisting of either:
| 26 × 45 kg,
or |
| 16 × 136 kg,
or |
| 12 × 227 kg,
or |
| 8 × 454 kg,
or |
| 4 × 907 kg |
|
|
Torpedoes/rockets |
- |
Technical data on the Boeing B-17 G |
Powerplant |
4 ×
Wright R-1820-97 Cyclone radial with emergency output, rated at 1380
hp (1028.78 kW) each |
|
Role during war |
| Heavy Bomber |
|
Length |
74
ft 9 inch or 74 ft 4 inch with the "Cheyenne" tail position |
|
Height |
19
ft 1 inch |
Empty weight |
38000 lb |
|
Operational weight |
65500 lb typical,
72000 lb max |
Wing Span |
103
ft 9 inch |
|
Wing Aspect ratio |
7.585 |
Wing Area |
1420 sq ft |
|
Service ceiling |
35600 ft |
Maximum speed |
302
mph at 25000 ft |
|
Cruising speed |
287
mph at 25000 ft |
Initial climb rate |
Climb to 20,000 ft in 37 mins 0 sec |
|
Range |
1800 miles typical,
3400 miles max |
Fuel capacity internal |
2,340 Imp gal (2,810 US gal) with provision for 682 Imp gal (820 US
gal) in a weapons bay tank |
|
Fuel capacity external |
- |
Machine guns |
13
× 0.50 inch trainable guns, consisting of:
| 2 guns in
powered Bendix nose turret, 300 rounds each |
| 1 gun each
in 2 cheek positions, 500 rounds each |
| 2 guns in
powered dorsal turret |
| 1 gun
rearward firing in radio operator room, 500 rounds |
| 2 guns in
powered ventral Sperry ball turret, 500 rounds each |
| 2
lateral-firing guns in the waist positions, 400 rounds each
|
| 2 guns in
the tail turret, 500 rounds each |
The maximum
number of rounds a B-17G could carry was 6380 pieces |
|
Cannons |
- |
Bomb load |
Up
to 17,600 lb in weapons-bay rated 9,600 lb, and on two hardpoints
under the wings rated 4,000 lb each. The load generally consisted of:
| 6 × 1,600 lb
bombs, or 8 × 1,000 lb bombs, or 16 × 500 lb bombs carried internal,
and |
| 2 × 4,000 lb
bombs, one on each hardpoint |
|
|
Torpedoes/rockets |
- |
Crew |
10:
pilot, co-pilot, bombardier, navigator, radio operator, 5 gunners |
|
Naval or ground based |
Ground |
First flight (prototype) |
28
July 1935, this version May 1943 |
|
Operational Service |
1937 - 1960's |
Manufacturer |
Boeing Aircraft Company |
|
Number produced |
12,731 total, 8680 this version |
Length |
22.78 m or 22.66 m with the "Cheyenne" tail position |
|
Height |
5.82 m |
Empty weight |
17237 kg |
|
Operational weight |
29711 kg typical,
32659 kg max |
Wing Span |
31.62 m |
|
Wing Aspect ratio |
7.585 |
Wing Area |
131.92 m² |
|
Service ceiling |
10851 m |
Maximum speed |
486
km/h at 7620 m |
|
Cruising speed |
462
km/h at 7620 m |
Initial climb rate |
Climb to 6095 m in 37 mins 0 sec |
|
Range |
2897 km typical,
5472 km max |
Fuel capacity internal |
10.637 liters with provision for 3.104 liters in a weapons bay tank |
|
Fuel capacity external |
- |
Machine guns |
13
× 12 mm trainable guns, consisting of:
| 2 guns in
powered Bendix nose turret, 300 rounds each |
| 1 gun each
in 2 cheek positions, 500 rounds each |
| 2 guns in
powered dorsal turret |
| 1 gun
rearward firing in radio operator room, 500 rounds |
| 2 guns in
powered ventral Sperry ball turret, 500 rounds each |
| 2
lateral-firing guns in the waist positions, 400 rounds each
|
| 2 guns in
the tail turret, 500 rounds each |
The maximum
number of rounds a B-17G could carry was 6380 pieces |
|
Cannons |
- |
Bomb load |
Up
to 7.983 kg in weapons-bay rated 4.355 kg, and on two hardpoints under
the wings rated 1814 kg each. The load generally consisted of:
| 6 × 726 kg
bombs, or 8 × 454 kg bombs, or 16 × 227 kg bombs carried internal,
and |
| 2 × 1814 kg
bombs, one on each hardpoint |
|
|
Torpedoes/rockets |
- |
Here is a quick overview of all different
versions, without the full technical specifications:
Different versions of the Boeing B-17 Flying Fortress |
Boeing Model 299
Flying Fortress |
First prototype of
the B-17 flying Fortress, owned by Boeing, and therefor never
designated in the B-17 way.
Number built: 1 |
Boeing YB-17
Flying Fortress |
First (test)
operational B-17 for the USAAF. These bombers were powered by 4 ×
Wright R-1820-39 radials, rated at 1,000 hp (634 kW) each.
Number built: 13 |
Boeing Y1B-17
Flying Fortress |
Redesignation of
the B-17 during initial operational trials.
Redesignated aircraft |
Boeing B-17 Flying
Fortress |
Redesignation of
the Y1B-17 after initial operational trials, to signify their fully
operational status
Redesignated aircraft |
Boeing B-17B
Flying Fortress |
After the initial
trials a number of improvements were added to the design, and the type
was called B-17B. Amongst the improvements were: hydraulically
operated brakes in stead of pneumatically, redistribution of the crew
positions, and the super charger placed upon the engines: 4 × Wright
R-1820-51 supercharged radials. For further details see above.
Number built: 39 |
Boeing B-17C
Flying Fortress |
This versions
received added armor for the crews, self-sealing fuel tanks, and
revisions in it's defensive and offensive armament. The weapon load
was increased to 10,500 lb (4763 kg). Also the defensive guns were
chaged to 1 × 0.3 inch (7.62 mm) and 6 × 0.5 in (12 mm) guns. The
blisters in the waist were removed and changed to single-gun waist
stations, the ventral blister was replaced by a bathtub with 2
guns.The single nose gun became two cheek guns, the forward dorsal
position increased to 2 guns, and the rear dorsal position carried the
single 0.3 in (7.62 mm) gun.
It was powered by 4 × Wright R-1820-63 supercharged radials, rated at
1,200 hp (895 kW) each. The max level speed was 323 Mph (520 km/h),
cruising speed was 231 Mph (372 km/h). Initial climb rate was 1,300 ft
(396 m) per minute.
20 aircraft were transferred to the RAF as Boeing Fortress Mk I's
during the late summer of 1940.
Number built: 38 |
Boeing B-17D
Flying Fortress |
Initially ordered
as 48 B-17 C's, the modifications were big enough to assign it another
model number B-17 D. This version had a lot of (internal) improvements
including the electrical system and the introduction of cowling flaps,
and was the first model to see a crew of 10 in stead of 9. This
version carried 1 x .30 inch (7.62 mm) and 6 x 0.50 inch (12 mm) guns.
The remaining 18 B-17C's (after the transfer of 20 aircraft to the
RAF) were later converted to the B-17D standard.
The B-17D was also the first version to see action in service of the
USAAF, when during the Japanes raid on Pearl Harbor 11 out of 33 were
destroyed on the ground, and 2 days later the remainder attacked a
Japanese convoy.
Number built: 48 |
Boeing B-17E
Flying Fortress |
The B-17 E was the
first version to see a tail-turret, thus eliminating a severe blind
spot in the rear. Also was the electrical ventral turret replaced by a
Sperry ball turret, in which a man could sit/hang. Due to spatial
restrictions the gunner had to be a very small person (for more
information, see above). The Dorsal turret was also replaced by a
Sperry turret.
The B-17E Flying Fortress was the first USAAF bomber to enter service
in Europe, and later in North Africa. It was used mainly on
medium-range missions. About 45 B-17E's were transferred to Coastal
Command.
Number built: 512 |
Boeing B-17F
Flying Fortress |
Same as B-17 E
externally, except for the glass nose out of 1 piece, but with
different Powerplant again: 4 x Wright R-1820-97 Cyclones, each rated
at 1,380 hp (1030 kW) emergency power. This version saw a lot of
subversions, and was built by three different manufacturers. As a
result, the armour and armament differed during this version, and the
possible bombload. Armament was typically like: 1 × 0.30 inch (7.62
mm) nosegun, 2 × 0.50 inch (12 mm) waistguns (cheecks), 2 × 0.50 inch
(12 mm) waistguns, 2 × 0.50 inch (12 mm) dorsal turret, 2 × 0.50 inch
(12 mm) guns ventral turret (ball), and 2 × 0.50 inch (12 mm) guns in
the tail.
In the field also a lot of modifications where made to the armour,
especially to protect the crew from frontal attacks. Furthermore was
the fuel capacity enlarged to be able to carry heavier bombloads, and
to make up for the increase in weight of the plane (needed more fuel
for more pounds). The famous Memphis Belle was an -F version. Also, 19
B-17F's were transferred to Coastal Command
Number built: 3405 |
Boeing B-17G
Flying Fortress |
Experiences with
the B-17F showed that German attacks on the B-17 were almost always
head-on attacks, concentrated on the nose where there was the least
armor and defensive armament, and the most vulnerable parts. Therefor
a Bendix noseturret with 2 × 0.50 in (12 mm) guns was installed,
enhancing the field of vision and punch the B-17 could deal out up
front.
Besides the chin-turret there were numerous other improvements,
including a different navigator position, refined bomb-control
systems, electric control of the turbo chargers, an electrically
boosted control column and other changes to the defensive armament.
This was the final production version, because of the nearing end of
the war, and the rise of the Boeing B-29 Superfortress. 85 B-17G's
were transferred to the RAF for maritime reconnaissance at Coastal
Command, and electronic warfare in Bomber Command
Number built: 8680 |
Boeing B-17H
Flying Fortress |
After the war it
was planned to convert 130 B-17G's to search-and-rescue aircraft,
fitted with a self-righting and self-bailing lifeboat in the weapons
bay. This boat would be dropped with 3 parachutes near downed crew.
Only 12 were converted
Number converted: 12 |
Boeing YB-40
Flying Fortress |
During the first
days of the Americans in Europe, there were no escort fighters
available with the range needed for the defence of the B-17's. Looking
back at the loss rates of unescorted bombers it was deemed too
dangerous to start daylight bombing with unescorted bombers. The only
plane able to follow the B-17 all the way was.. a B-17!
Starting as B-17 F's, some 20 bombers were refitted. typically they
carried 14 0.50-inch machine guns. Additional protective armor was
fitted for better crew protection. Some fortresses had up to 30 guns,
or carried heavy cannons. Due to drag of additional turrets, and
increased weight, the top speed was so low that the YB-40's could not
maintain formation after the normal bombers had dropped their loads,
failing in their defensive role.
In a number of test missions they claimed some air-to-air kills, and
some damages, but one YB-40 was lost. After this and the fact they
could not keep up with the returning formations the project was
abandoned. The remaining YB-40's were converted back to standard
bombers, or were used as gunnery trainers.
This version however saw the first use of the Bendix chin turret,
later installed in all B-17G's
Number converted: 20 |
Boeing C-108
Flying Fortress |
3 B-17's of
various types were converted as VIP transport
Number converted: 3 |
Boeing CB-17
Flying Fortress |
New designation
applied to a number of B-17G's that were converted for transport
duties
Number converted: unknown |
Boeing DB-17
Flying Fortress |
A number of B-17's
were fitted to act as drone-control aircraft
Number converted: unknown |
Boeing DB-17P
Flying Fortress |
Redesignation of
the DB-17 Flying Fortress
Redesignated aircraft |
Boeing EB-17G
Flying Fortress |
A Curtiss owned
B-17G used as a testbed for turboprop trials
Redesignated aircraft |
Boeing FB-17F
Flying Fortress |
Redesignation of
the F-9 Flying Fortress
Redesignated aircraft |
Boeing JB-17G
Flying Fortress |
Redesignation of
the EB-17G Flying Fortress
Redesignated aircraft |
Boeing QB-17G
Flying Fortress |
Redesignation of
the BQ-7 Flying Fortress "Aphrodite"
Redesignated aircraft |
Boeing QB-17L
Flying Fortress |
A number of
B-17G's were converted to this standard to operate as remote controled
targets for weapons tests. The aircraft were fitted with a TV camera
system to provide air and/or ground controlers with a view of the
approaching missile
Number converted: unknown |
Boeing QB-17N
Flying Fortress |
Like the QB-17L,
but without the TV system
Number converted: unknown |
Boeing QB-17P
Flying Fortress |
Starting as Target
drone controllers (DB-17P's) a small number were converted to targets
themselves.
Number converted: unknown |
Boeing RB-17F
Flying Fortress |
Redesignation of
the FB-17F Flying Fortress reconnaissance aircraft
Redesignated aircraft |
Boeing RB-17G
Flying Fortress |
Redesignation of
the FB-17G Flying Fortress reconnaissance aircraft
Redesignated aircraft |
Boeing SB-17G
Flying Fortress |
Redesignated
B-17H's after the war
Redesignated aircraft |
Boeing TB-17G
Flying Fortress |
Conversions of
B-17G's to act as crew trainer
Number converted: unknown |
Boeing TB-17H
Flying Fortress |
Conversion of the
B-17H to act as trainers for the B-17H
Number converted: 5 |
Boeing VB-17G
Flying Fortress |
Conversion of the
B-17G to act as staff transports
Number converted: unknown |
Boeing CQ-4/CQ-17 |
Conversion of
B-17G's to act as QB-17 drone control aircraft.
Number converted: unknown |
Boeing MQ-17G
Flying Fortress |
Improved version
of the BQ-7 guided bomb
Number converted: unknown |
Boeing DP-17G
Flying Fortress |
Redesignation of
the CQ-4 Drone control aircraft
Redesignated aircraft |
Boeing PB-1 Flying
Fortress |
Originally the
B-17 was intended for use as a maritime rpatrol and reconnaissance
aircraft, until the USAAF started to use them as heavy bombers. During
1942 the US Navy was in need of patrol aircraft, anf\d the B-17 could
fulfil this role because of it's performances. Thus a number of USAAF
aircraft were transferred to the US Navy, and wherre redesignated PB-1
Number transferred: 2 |
Boeing PB-1G
Flying Fortress |
After the first
trials with 1 B-17F and 1 B-17G, 17 more B-17G's were transferred from
the USAAF to the US Navy.
Number transferred: 17 |
Boeing PB-1W
Flying Fortress |
The final version
of the navy Fortresses was converted from B-17G's, and were fitted
with underwing fuel tanks, APS-20 search radar, and powered by 4 ×
R-1820-97 radials, rated at 1,200 hp (895 kW) each.
Number converted: 31 |
Boeing F-9 Flying
Fortress |
Conversions from
B-17F's for photo-reconnaissance roles. All bombing equipment was
removed, and some of it's defensive armament. In stead they were
fitted with trimetrogon cameras in the nose, and additional cameras in
the weapons bay and rear-fuselage.
Number converted: 16 |
Boeing F-9A Flying
Fortress |
Conversions from
B-17F's for photo-reconnaissance roles, but with different camera
setup as the F-9.
Number converted: unknown |
Boeing F-9B Flying
Fortress |
F-9A's but with
revised camera setup. Also 25 additional B-17F's were converted to
this standard
Number converted: 25 + unknown number of redesignated aircraft
|
Boeing F-9C Flying
Fortress |
The final
conversions to the F-9 series, from B-17G's
Number converted: 10 |
Boeing Fortress Mk
I for the RAF |
20 B-17C's were
transferred form the USAAF to the RAF. At the time the RAF was in dire
need of bombers to take the battle to Germany in July - November 1940.
After the RAF had decided that the Fortress Mk I was too vulnerable
both in defense, offense and technically, it was deemed unfit for the
European Theatre, and transferred to Coastal Command for Maritime
reconnaissance.
Number transferred: 20 |
Boeing Fortress Mk
II for the RAF |
About 45 B-17E's
were transferred to Coastal Command
Number transferred: 45 |
Boeing Fortress Mk
IIA for the RAF |
About 19 B-17F's
were transferred to Coastal Command
Number transferred: 19 |
Boeing Fortress Mk
III for the RAF |
85 B-17G's were
transferred to the RAF for maritime reconnaissance at Coastal Command,
and electronic warfare in Bomber Command
Number transferred: 85 |
Dornier Do 200 |
Since thousands of
Bombers were deployed over germany, it is hardly a surprise that the
luftwaffe had a couple of B-17 in it's stock. Some were forced to land
due to damage, other were reconstructed using pieces of crashed
planes. In total, the Luftwaffe had 40 B-17's in use, redesignated as
"Dornier Do 200". A number of these served in the Luftwaffe to develop
new tactics for fighters, a couple of the bombers were used for
clandestine operations in order to drop agents and goods over enemy
(Allied) territory. At least 1 captured B-17 was used as a decoy: it
would follow damaged stragglers and winning their trust by flying
"cover" for their damaged counterpart. As soon as the Allied bomber
flew in tight formation, the gunners of the Luftwaffe would start
firing at it using the guns on board, destroying the unsuspecting
bomber.
Also Japan had a small number of B-17's in its arsenal, which were
used for study and development of fighter tactics.
Number captured and repaired: 40+ |
Boeing BQ-7 Flying
Fortress |
In June 1944 a
plan concerning radio controlled B-17's was approved. The goal was to
attack V1 sites and other heavily protected and fortified structures,
such as Sub-marine pens. These sites were difficult to destroy from
the air. Around 25 old Fortresses of all kinds of versions (mainly the
-F version though) were prepared for this task.
Up to 9 tons (9.144 kg) high explosives were packed inside a stripped
Fortress, with added radio controled flight system and 2 TV cameras (1
for the instrument panel, 1 for looking up the target).
The BQ-7 were to be controled by crewmen in the first leg of the trip
(still over Britain), who would subsequently bail out with parachutes.
The controls would then be in the hands of "Command Aircraft", other
B-17's, flying in the vicinity. After a number of tries and fatal
accidents, without any firm results, the project was abandoned. One
drone evel fell to German hands after the BQ-7 crashed and failed to
explode, enabling the Germans to study the radio controlled systems
aboard.
Number converted: unknown |
Strengths:
|
Well armed. Not
enough to take care of fighters (except the YB-40), but good enough to
be a real threat |
|
Capable of taking
damage, robust design |
|
Good bomb hit ratio
despite the high altitudes, thanks to the Norden Bombsight |
Weaknesses:
|
Slow |
|
Medium bombload. The tonnage that the B-17's dropped on the Germans was
due to the sheer numbers and the fact that they operated in daylight
|
|