 Three DH.9A in formation. The de Havilland DH.9 was a British bomber used in World War I. It was followed by the DH.9A with a more powerful engine. Until 1920, Geoffrey de Havillands de Havilland Aircraft Company had been known as Airco, where he was owner and chief designer. ...
Combatants Allied Powers: British Empire France Italy Russia United States Central Powers: Austria-Hungary Bulgaria Germany Ottoman Empire Commanders Ferdinand Foch Georges Clemenceau Joseph Joffre Victor Emmanuel III Luigi Cadorna Armando Diaz Nicholas II Aleksei Brusilov Herbert Henry Asquith Douglas Haig John Jellicoe Woodrow Wilson John Pershing Wilhelm II Paul...
DH.9
The DH.9 was commissioned in response to German bombing raids on England in 1917. It was based on the Airco DH.4, and was intended as a longer range version of the DH.4. The DH.9 used a 230-HP (172p-kW) Galloway-Adriatic. This engine was so under powered that the DH.9 was actually inferior in performance to the DH.4 it was supposed to replace as it was unable to fly high with a full bomb load. Because of its lack of altitude, 54 were shot down, and another 94 were written off on the Western Front between May and November of 1917. The DH.9 was however more successful against the Turkish forces in the Middle East, as they lacked adequate air cover. The Airco DH.4 was a British two seat biplane day-bomber of the First World War. ...
The horsepower (hp) is the name of several non-metric units of power. ...
The kilowatt (symbol: kW) is a unit for measuring power, equal to one thousand watts. ...
Western Front was a term used during the First and Second World Wars to describe the contested armed frontier between lands controlled by Germany to the East and the Allies to the West. ...
A handful of DH.9s were exported to the United States, Belgium, Canada, New Zealand, and South Africa. South Africa modified their DH.9s with Jupiter engines and renamed them Mpala.
DH.9A The DH.9A (also referred to as the Nine-Ack) was produced by Westland Aircraft after the Americans showed interest in the DH.9. It was fitted with an large 400-HP (298 kW) engine. The DH.9A also featured larger wings than the DH.9. Westland Aircraft was a British aircraft manufacturer located in Yeovil in Somerset, formed just before the start of World War II. During the war the company produced a number of generally unsuccessful designs, but their Lysander would serve as an important liaison aircraft with the RAF. After the war the...
The DH.9A was armed with a Vickers machine gun synchronized to fire through the propeller for the pilot, and either a single or double Lewis Gun for the observer. The Vickers machine gun or Vickers gun is a name primarily used to refer to the water-cooled . ...
The interrupter gear, more properly (and correctly) known as a synchronisation gear, was a triggering device attached to a fighter aircrafts machine gun so that it would fire only at certain times. ...
The Lewis Gun was a pre-WWI era American design of machine gun most widely used by the British Empire and Imperial armies that continued to see service all the way through to WWII, it first saw combat with the Belgian Army in WWI. It is visually distinctive because of...
Specifications (DH.9A) General characteristics - Crew: 2
- Length: 30 ft (9.14 m)
- Wingspan: 46 ft (14.02 m)
- Height: 10 ft 9 in (3.28 m)
- Wing area: 488 ft² (45.36 m²)
- Empty weight: 2,800 lb (1,270 kg)
- Loaded weight: lb (kg)
- Max takeoff weight: 4,900 lb (2,223 kg)
- Powerplant: 1× Liberty 12A V-12 Piston, 400 hp (298 kW)
Performance Armament The distance AB is the wing span of this Aer Lingus Airbus A320. ...
In aviation, the Maximum Take-Off Weight (or MTOW) is the maximum weight with which an aircraft is allowed to try to achieve flight. ...
General characteristics Layout V-12 Cooling water Cylinders 12 Valve type Displacement 27 litres Rotation rate 1700 rpm Power 400 hp Power (300 kW Weight 383kg The Liberty L-12 was a 27 litre water-cooled 45 degree V-12 aircraft engine of 400 horsepower (300 kW). ...
VNO of an aircraft is the V speed which refers to the velocity of normal operation. ...
The maximal total range is the distance an aircraft can fly between takeoff and landing as limited by its fuel capacity. ...
In aeronautics, the service ceiling is the maximum density altitude where the best rate of climb airspeed will produce a 100 feet per minute climb(twin engine) and 50 feet(single engine) at maximum weight while in a clean configuration with maximum continuous power. ...
This page is a candidate to be moved to Wiktionary. ...
In aerodynamics, wing loading is the loaded weight of the aircraft divided by the area of the wing. ...
Power-to-weight ratio is a measure commonly used when comparing various vehicles (or engines), including automobiles, motorcycles and aircraft. ...
The Vickers machine gun or Vickers gun is a name primarily used to refer to the water-cooled . ...
The Lewis Gun was a pre-WWI era American design of machine gun most widely used by the British Empire and Imperial armies that continued to see service all the way through to WWII, it first saw combat with the Belgian Army in WWI. It is visually distinctive because of...
A Scarff ring was a machine gun mount used on aircraft in the First World War. ...
References Winchester, Jim [2003]. Bombers of the 20th Century (in English). United Kingdom: Airlife Publishing LTD, 7. ISBN 1-84037-386-5. |
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