Lynx reconnaissance vehicle

The Lynx reconnaissance vehicle (manufacturer's name: M113½ Command and Reconnaissance Vehicle, abbr. M113 C&R) is a United States-built tracked armoured fighting vehicle, which was employed by the armed forces of the Netherlands and Canada. Dutch vehicles were exported in the 1990s to Bahrain and Chile, according to SIPRI 35 and 8 vehicles respectively.

The Lynx is a smaller command and reconnaissance vehicle built as a private venture in 1963 by FMC Corp., the manufacturer of the M113 armoured personnel carrier. The Lynx uses M113A1 components, including aluminum armour, but with only four road wheels on each side and the engine in the rear instead of the front. The U.S. Army adopted the M114 in favour of the M113½, but it was employed in the reconnaissance role by the Netherlands and Canada (where it was officially designated the Lynx).

The Lynx is amphibious, propelled in the water by its tracks. Before swimming, a trim vane is erected at front, bilge pumps started, and covers mounted on the air intake and exhaust. In practice, crews would close hatches and ford shallow streams at high speed.

C&R

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CR

CR or Cr may refer to:

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Halley's Comet

Halley's Comet or Comet Halley (/ˈhæli/ or /ˈheɪli/), officially designated 1P/Halley, is a short-period comet visible from Earth every 75–76 years. Halley is the only known short-period comet that is clearly visible to the naked eye from Earth, and the only naked-eye comet that might appear twice in a human lifetime. Halley last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061.

Halley's returns to the inner Solar System have been observed and recorded by astronomers since at least 240 BC. Clear records of the comet's appearances were made by Chinese, Babylonian, and medieval European chroniclers, but were not recognized as reappearances of the same object at the time. The comet's periodicity was first determined in 1705 by English astronomer Edmond Halley, after whom it is now named.

During its 1986 apparition, Halley's Comet became the first comet to be observed in detail by spacecraft, providing the first observational data on the structure of a comet nucleus and the mechanism of coma and tail formation. These observations supported a number of longstanding hypotheses about comet construction, particularly Fred Whipple's "dirty snowball" model, which correctly predicted that Halley would be composed of a mixture of volatile ices – such as water, carbon dioxide, and ammonia – and dust. The missions also provided data that substantially reformed and reconfigured these ideas; for instance, now it is understood that the surface of Halley is largely composed of dusty, non-volatile materials, and that only a small portion of it is icy.