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Handley Page H.P. O/400

Heavy Bomber Aircraft

Handley Page H.P. O/400

Heavy Bomber Aircraft

OVERVIEW
SPECIFICATIONS
ARMAMENT
VARIANTS
HISTORY
MEDIA
OVERVIEW



For a time, the HP O/400 was the largest aircraft ever produced for the United Kingdom.
National Flag Graphic
ORIGIN: United Kingdom
YEAR: 1918
MANUFACTURER(S): Handley Page - UK
PRODUCTION: 657
OPERATORS: Australia; China; United Kingdom; United States
SPECIFICATIONS



Unless otherwise noted the presented statistics below pertain to the Handley Page H.P. O/400 model. Common measurements, and their respective conversions, are shown when possible.
CREW: 3
LENGTH: 62.86 feet (19.16 meters)
WIDTH: 100.00 feet (30.48 meters)
HEIGHT: 21.98 feet (6.7 meters)
WEIGHT (EMPTY): 8,501 pounds (3,856 kilograms)
WEIGHT (MTOW): 13,360 pounds (6,060 kilograms)
ENGINE: 2 x Rolls-Royce Eagle VIII V-12 engines developing 360 horsepower each.
SPEED (MAX): 98 miles-per-hour (157 kilometers-per-hour; 85 knots)
RANGE: 450 miles (724 kilometers; 391 nautical miles)
CEILING: 8,497 feet (2,590 meters; 1.61 miles)
RATE-OF-CLIMB: 217 feet-per-minute (66 meters-per-minute)




ARMAMENT



STANDARD:
5 x 7.7mm Lewis machine guns in nose (2x), dorsal (2x) and ventral (1x) positions.

OPTIONAL:
8 x 250lb bombs OR 16 x 112lb bombs. Up to 2,000lbs of total external ordnance.
VARIANTS



Series Model Variants
• O/100 - Initial Bomber Model on which the development of the 0/400 stemmed from.
• O/400 - Base Series Designation


HISTORY



Detailing the development and operational history of the Handley Page H.P. O/400 Heavy Bomber Aircraft.  Entry last updated on 7/1/2016. Authored by Staff Writer. Content ©www.MilitaryFactory.com.
The O/400 model series by Handley Page aircraft firm was the principle heavy bomber of the RAF by the end of the First World War. The O/400 was directly descended from the previous O/100 model series with the "100" and "400" designations assigned to each model depicting the horsepower output of the engines. Similarities aside, the O/400 not only fitted new engines to the bomber design but the system also had a newly designed bombsight that improved - if ever so slightly - the capabilities of aircraft and crew alike. The heavy bomber would be used in quantity with British forces to which more than 500 examples would be produced along with limited quantities of the type as supplied to by American forces.

The O/400 was a rudimentary design common with World War One standards, though built to an immensely large size - a 100 foot wingspan with a length of nearly 63 feet. The aircraft was crewed by a compliment of three personnel and fitted with two landing gear systems mounting two wheels a piece. The engines set the system apart from the previous O/100 design by mounting the 360hp Rolls-Royce brand Eagle VIII V-12 engines on either side of the fuselage. Wing design was of the typical heavy bomber biplane type, with struts spanning the structures. The aircraft featured a three-rudder, twin-elevator system at rear.

Armament of the mammoth Handley Page O/400 consisted of three Lewis-type machine gun systems mounted at various defensive positions about the fuselage. Ordnance capabilities were impressive with the ability to field up to 16 x 112lb bombs or up to 8 x 250lb bombs. Bombing was accomplished through a LT Commander Wimperis-designed Drift Sight Mk 1A bombsight. This system had the capability to process aerial information for the bomber to utilize in the form of drift, the aircraft's current airspeed and altitude for improved bombing capabilities over its predecessor. In all, the system was fielded in force to the end of the war, seeing full action with no fewer than eleven operational RAF squadrons throughout the English Empire.




MEDIA









Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

Image of collection of graph types

Relative Maximum Speed Rating
Hi: 100mph
Lo: 50mph
    This entry's maximum listed speed (98mph).

    Graph average of 75 miles-per-hour.
City-to-City Ranges
NYC
 
  LDN
LDN
 
  PAR
PAR
 
  BER
BER
 
  MSK
MSK
 
  TKY
TKY
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Graph showcases the Handley Page H.P. O/400's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
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Pie graph section
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
657
657

  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


Altitude Visualization
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Supported Roles
A2A
Interception
UAV
Ground Attack
CAS
Training
ASW
Anti-Ship
AEW
MEDEVAC
EW
Maritime/Navy
SAR
Aerial Tanker
Utility/Transport
VIP
Passenger
Business
Recon
SPECOPS
X-Plane/Development
A2A=Air-to-Air; UAV=Unmanned; CAS=Close Support; ASW=Anti-Submarine; AEW=Airborne Early Warning; MEDEVAC=Medical Evac; EW=Electronic Warfare; SAR=Search-Rescue