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OLC comment, MOP logging deactivated
At 12:08 12 July 2020, kinsell wrote:
On 7/12/20 6:05 AM, kinsell wrote: On 7/12/20 3:09 AM, Tim Newport-Peace wrote: At 01:17 12 July 2020, wrote: LX is the only company who has devices for putting flights into OLC if you have a FES system. I think LX is also the only company that offers an ENL suitable for turbine (jet) engines. The audible frequency of jets sometimes does not register with a standard ENL that is optimized for a piston/propeller installation. I think you may mean a MOP type 1b box, which filters to a frequency more common with Jet engines. ENL is always internal to the recorder, but MOP is usually a remote sensor. With a Jet, the main noise is from the Jet Pipe(s), so the sensor needs to be (ideally) mounted in a suitable place to the rear of the piles, which usually mounting the sensor at the rear of the engine bay. Hard to put a FR there as it usually requires removing the engine to gain access. If LXV is the only company to invest in designing, building and gaining approval for a MOP box, it is not the fault of LXV. These are commercial decisions by themselves and their competitors. Also, it is OLC's decision to require a MOP type2 recorder for FES, not IGC's. Looking at LX Navigation (as opposed to LX Nav), they claim to have the "Worlds first standalone MOP flight recorder with IGC approved sensor for gliders equipped with jet or electric engines".* That makes it sound like the same hardware is usable for FES or jets.* Which seems unlikely. Withe the ear-splitting noise from a jet engine, you'd think they could come up with a panel mounted ENL system that was suitable for jets. Of course FES doesn't cover all all electric gliders, I suppose OLC will have to change their rules again when the AS 34 and GP-15's start flooding the market.* Any day now. They could still require a MOP type 2 ;=) Oops, left out the Electric Libelle. You are referring to the LX Navigation LX MOP IGC (Sometimes refered to as a Type 3 MOP). It records MOP for Jets with a maximum sensitivity at about 6000Hz and ENL for the rest peaking at 150Hz. "This small recorder is designed to be installed close to the maximum sound produced by an engine. The approval does not include other positions that produce small ENL/MOP numbers". If mounted in the engine bay to conform to the requirement of being close to the Jet Pipe(s), retrieving files could be an issue. |
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