Arado Ar 240 - Operational History - Testing and Evaluation

Testing and Evaluation

Technical specifications were first published in October 1938, followed by detailed plans later that year. In May 1939, the RLM ordered a batch of six prototypes. The first Ar 240 V1 prototype, DD+QL, took to the air on 25 June 1940, and immediately proved to have poor handling in all axes, and it also tended to overheat during taxiing.

The handling was thought to be the result of the ailerons being too small given the thick wing, so the second prototype was modified to have larger ones, as well as additional vertical fin area on the dive brakes to reduce yaw. In addition small radiators were added to the gear legs to improve cooling at low speeds, when the gear would normally be opened. Ar 240 V2, KK+CD, first flew on 6 April 1941, and spent most of its life at the factory in an experimental role.

Ar 240 V3 followed, the first to be equipped with the FA 9 rear-firing armament system, developed jointly by Arado and DVL, armed with a 7.92 mm (.312 in) MG 81Z machine gun. Ar 240 V4 was the first to include an operational dive brake, and flew on 19 June 1941. Ar 240 V5 and V6 followed in December and January, including the upgraded FA 13 system using two 13 mm (.51 in) MG 131 machine guns in place of the MG 81Z for a considerable boost in firepower.

The Ar 240's excellent performance quickly led to the V3, V5 and V6 being stripped of their armament, including the defensive guns, and used as reconnaissance aircraft over England, where no other two-seater could venture by 1942.

Read more about this topic:  Arado Ar 240, Operational History

Other articles related to "testing, testing and evaluation":

Negative Predictive Value
... In statistics and diagnostic testing, the negative predictive value (NPV) is a summary statistic used to describe the performance of a diagnostic testing procedure ... In the familiar context of medical testing, a high NPV means that the test only rarely misclassifies a sick person as being healthy ...
National Curriculum Assessment - Criticisms
... stress for their whole academic lives, and that the principal purpose of national curriculum testing is for school league tables ... In its 2008 report into National Testing, the House of Commons, the Select Committee on Children, Schools and Families registered its concern with the current testing arrangements in state schools ...
Lockheed XF-104 - Operational History - Testing and Evaluation
... The first XF-104 (Lockheed 083-1001, s/n 53-7786) was transported to Edwards AFB amidst high secrecy during the night of 24–25 February where Lockheed test pilot Tony LeVier was to do the initial testing ... On 28 February 1954, the XF-104 made a planned hop of about five ft off the ground during a high-speed taxi, but its first official flight took place on 4 March 1954 ...
Allergic Rhinitis - Allergy Testing
... Allergy testing may reveal the specific allergens to which an individual is sensitive ... Skin testing is the most common method of allergy testing ... is dissolved and dropped onto the lower eyelid as a means of testing for allergies ...

Famous quotes containing the words evaluation and/or testing:

    Good critical writing is measured by the perception and evaluation of the subject; bad critical writing by the necessity of maintaining the professional standing of the critic.
    Raymond Chandler (1888–1959)

    Now I see that going out into the testing ground of men it is the tongue and not the deed that wins the day.
    Sophocles (497–406/5 B.C.)