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Bar grip tyres, or 'NDT' (Non-Directional Tire) in US military parlance, are an early tyre tread pattern developed for off-road use. Bar grips are characterised by a solid rubber circumferential centre strip, with large solid cleat alternately to either side. These span the full width of the tread.
The most basic radio-navigational aid used in aviation is the non-directional beacon or NDB. It is a simple low- and medium-frequency transmitter used to locate airway intersections and airports and to conduct instrument approaches, with the use of a radio direction finder located on the aircraft. The aviation NDBs, especially the ones marking ...
Link 16 is a TDMA-based secure, jam-resistant, high-speed digital data link that operates in the radio frequency band 960–1,215 MHz, allocated in line with the International Telecommunication Union (ITU) Radio regulations to the aeronautical radionavigation service and to the radionavigation satellite service.
The military model EH was a 5-ton on road 4x2 cargo truck. The EH, EHU (cabover) and semi-tractor models EHT and EHUT had EN354 engines and disc wheels. Early trucks had standard commercial cabs, later open military cabs were used. Of 3,500 EH and 50 EHT built in 1943–1944, over 2,400 were exported to the British. [7] [8]
In the United States, the outer marker has often been combined with a non-directional beacon (NDB) to make a locator outer marker (LOM). An LOM is a navigation aid used as part of an instrument landing system (ILS) instrument approach for aircraft. Aircraft can navigate directly to the location using the NDB as well as be alerted when they fly ...
[3] [4] ADF receivers are normally tuned to aviation or marine NDBs (Non-Directional Beacon) operating in the LW band between 190 – 535 kHz. Like RDF ( Radio Direction Finder ) units, most ADF receivers can also receive medium wave (AM) broadcast stations, though these are less reliable for navigational purposes.
March 2023 edition cover page of the Multi-Service Brevity Codes. Multiservice tactical brevity codes are codes used by various military forces. The codes' procedure words, a type of voice procedure, are designed to convey complex information with a few words.
non-directional beacon: NDT non-destructive testing: NFF No fault found: Or: no trouble found (NTF) or no defect found (NDF) NGS nitrogen generation system NHA next higher assembly NIST National Institute of Standards and Technology: NLG nose landing gear NLR Netherlands Aerospace Research Centre: NM Nautical mile: Or: NMI NNC non-normal ...