Handley Page H.P. 53 Hereford

Handley Page H.P. 53 Hereford

Handley Page H.P. 53 Hereford

The Handley Page Hereford was a variant on the successful Handley Page Hampden, but powered by Napier Dagger engines. These engines were the downfall of the Hereford. They tended to overheat when used to take off from the grass runways common in the RAF at the time, then cool down too much in the air. Engine failure were too common, and even when the engine worked it was both noisy and high pitched!

The first prototype Hereford flew in June 1937. A production order was placed with Short Brothers and Harland in Belfast, for 100 aircraft, and the first production aircraft flew on 17 May 1939. In all 152 Herefords were built. When the engines worked, performance figures were similar to those for the Hampden, but the engine problems meant that the Hereford never became operational. A small number were used by training units in 1940, but many were converted back to the Hampden standard by swapping the Dagger engines for the more reliable Bristol Pegasus radial engines.


Handley Page H.P.42

The Handley Page H.P.42 and H.P.45 were four-engine biplane airliners designed and manufactured by British aviation company Handley Page, based in Radlett, Hertfordshire. It held the distinction of being the largest airliner in regular use in the world upon the type's introduction in 1931. [1]

HP.42 / HP.45
Handley Page H.P.42 G-AAUD Hanno
Role Civilian airliner
Manufacturer Handley Page
First flight 14 November 1930
Introduction June 1931
Retired 1940 (all lost)
Primary users Imperial Airways
Royal Air Force
Number built 4 HP.42, 4 HP.45

The H.P.42/45 were designed in response to a specification issued during 1928 by British airline Imperial Airways the two models share considerable similarities, the H.P.42 being optimised towards greater range at the expense of payload while the H.P.45 had these priorities inverted, allowing the latter to carry more passengers over shorter distances. Imperial Airways approved of Handley Page's proposals and ordered four aircraft of the two variants to serve as the new land-based long-distance flagships of its fleet.

On 14 November 1930, the prototype, named Hannibal, conducted its maiden flight. Following their introduction into Imperial Airways, they formed the backbone of the airliner's land-based fleet through most of the 1930s and, along with the company's numerous flying boats, have been considered to be icons of their era. A total of eight aircraft were built, four of each type all were named, with names beginning with the letter "H". Three of the survivors were pressed into Royal Air Force (RAF) service at the outbreak of the Second World War. By the end of 1940, all of the aircraft had been destroyed as a result of several accidents.


Handley Page H.P. 53 Hereford - History

100 Herefords were built by Short Brothers but failed to achieve operational status, many rebuilt as Hampdens.
Engine:
Hampden I
Model: Bristol Pegasus XVIII
Type: 9-Cylinder air cooled radial
Number: Two Horsepower: 1,000 hp

Hereford I
Model: Napier Dagger VIII
Type: 24-Cylinder air cooled H-type
Number: Two Horsepower: 1,000 hp
Dimensions:
Wing span: 69 ft. 2 in. (21.98m)
Length: 53 ft. 7 in. (16.33m)
Height: 14 ft. 4 in. (4.37m)
Wing Surface Area: N/A
Weights:
Empty:
Hampden: 11,780 lb. (5344 kg)
Hereford: 11,700 lb. (5308 kg)
Loaded:
Hampden: 18,756 lb. (8508 kg)
Hereford: 16,000 lb. (7257 kg)

Performance:
Maximum Speed:
Hampden: 254 mph (410 km/h)
Initial Climb: 980 ft/min (300 m/min)
Service Ceiling: 19,000 ft. (5790m)
Range (Fully loaded): 1,095 miles (1762 km)
Armament:
One .303 in. Vickers fixed forward.
One .303 in. Lewis manually aimed from nose by
nav/bomb aimer.
One .303 in. Lewis manually aimed by wireless
operator from upper rear position.
One .303 in. Lewis manually aimed by lower
rear gunner.

By January 1940 both rear positions refitted with twin Vickers and increased firing arcs.


Sites

Radlett Aerodrome was opened in 1929 as a grass aerodrome for Handley Page Civil Aircraft, the runway was extended in 1939 to enable production of Halifax bombers.

Before closing the airfield had two runways:

Most of the towers, hangars and runways were demolished in the 1970s after the Company was terminated. The M25 Motorway now stands on the south side of the site, with Lafarge Aggregates now owning the remainder. The runway surface was removed and replaced with grass, but a shadow remains when viewed from the air.


AIRCRAFT OF THE ROYAL AIR FORCE, 1939-1945: HANDLEY PAGE HP.52 HAMPDEN AND HEREFORD.

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From Graces Guide

Note: This is a sub-section of Handley Page.

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  • 0/400 was powered by 360 hp Eagle VIII or 275hp Sunbeam Maori or 350 hp Liberty 12-N engines.

It had four engines but in only two nacelles, so two engines were pulling in the conventional manner and two pushing. Powered by four 375 hp Eagle VIII four 500 hp [Galloway]] Adriatic four 450 hp Napier Lion or four 400 hp Liberty 12 engines. A forward-looking design feature was the gunner's position at the extreme rear of the fuselage, between the four fins. 60 aircraft were built.

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Handley Page H.P. 53 Hereford - History

Страна: Country: Великобритания United Kingdom
Год: Year: 1937


Средний бомбардировщик с экипажем из четырех человек

Hereford / H.P.53

Handley Page H.P.53 Hereford

Как и модель Avro Manchester, самолет Handley Page H.P.53 Hereford имел в целом хороший планер, но неудачную силовую установку. Прототип этого самолета был переоборудован из опытного варианта патрульного самолета для Швеции, в свою очередь созданного на основе варианта бомбардировщика Hampden. Прототип, оснащенный двумя двигателями с Н-образным расположением цилиндров Napier Dagger VIII мощностью 955 л. с., совершил свой первый полет 1 июля 1937 года. Вскоре был заключен контракт на выпуск компаниями "Short Brothers" и "Harland" первой партии в 100 машин (позднее их число было увеличено до 152 единиц).

Первый из этих серийных бомбардировщиков, сошедший со стапеля завода в Белфасте, поднялся в воздух 17 мая 1939 года.
Дальнейшие испытания показали, что летные характеристики у Hereford примерно такие же, как у модели Hampden, но на этом сходство и кончалось. Двигатели оказались ненадежными, перегревались на земле и слишком быстро охлаждались в полете. В результате H.P.53 вскоре были переведены в разряд учебных машин и использовались в 16-й эскадрилье в Верхнем Хейфорде первые поставки были осуществлены 7 мая 1940 года. Другим подразделением, получившим Hereford, стала 185-я эскадрилья, переименованная затем в 14-ю эскадрилью переучивания, она получила самолеты в апреле 1940 года. Один Hereford эксплуатировался Центром разработки торпедного вооружения в Госпорте, а еще 19 машин были ремоторизированы и переоборудованы по стандарту Hampden.

Handley Page H.P.53 Hereford

Тип: средний бомбардировщик с экипажем из четырех человек
Силовая установка: два Н-образных 24-цилиндровых двигателя водяного охлаждения Napier Dagger VIII мощностью 1000 л. с. (746 кВт)
Летные характеристики: максимальная скорость на высоте 4725 м - 426 км/ч крейсерская скорость 277 км/ч практический потолок 5790 м дальность полета с бомбовой нагрузкой 1814 кг-1931 км
Масса: пустого 5307 кг максимальная скорость 8074 кг
Размеры: размах крыла 21,08 м длина 16,33 м высота 4,55 м площадь крыла 62,06 м2
Вооружение: два стреляющих вперед 7,7-мм пулемета и по одному пулемету в подфюзеляжной и надфюзеляжной установках, плюс до 1814 кг бомб