Measurement errors of slightly more than one-half degree would make possible a straight-line trajectory towards the Kecksburg area and a much shallower angle of descent than reported in the JRASC article.
22.
As with the Eastern Air Lines Flight 401 crash of a similarly-sized Lockheed L-1011 in 1972, the relatively shallow angle of descent likely played a large part in the relatively high survival rate.
23.
The DC-9 was 12 minutes from landing late Tuesday afternoon when crucial data _ the plane's call sign, altitude reading, ground speed and angle of descent _ disappeared from the controller's computer screen.
24.
The proposed new airport was designed to separate the two types of airport traffic, that of the STOL planes and general aviation between the two airports, which landed at two different angles of descent.
25.
Low airburst, typically about 10 metres, was used with HE . The height of burst with shrapnel depended on the angle of descent, but for optimal use it was a few tens of metres.
26.
This time he could not control the angle of descent as well as he had in his first attempt and when he hit the water he seriously damaged the aircraft and suffered severe lacerations to his forehead.
27.
The idea behind these high-angle guns was that the high elevation gave the shell a steep angle of descent and hence enabled it to penetrate the lightly armoured decks of attacking ships rather than their heavily armoured sides.
28.
Flaps are usually mounted on the wing trailing edges of a fixed-wing aircraft . Flaps are used to lower the minimum speed at which the aircraft can be safely flown, and to increase the angle of descent for landing.
29.
A shell fired at long range will travel on a ballistic trajectory, arriving at its target at a steep angle of descent and so strike the deck armour although at a velocity markedly less than its original muzzle velocity.
30.
In 1936, Hans Jacobs developed self-operating dive brakes, on the upper and lower surface of each wing, for gliders . Most early gliders were equipped with spoilers on the wings in order to adjust their angle of descent during approach to landing.
