[Diy_efi] On topic Aircraft EFI

[Brian Michalk]

Way cool.

Could you send me your email address?

How about shedding some light on the BMW fiasco where they tried to keep you
guys from flying?

> -----Original Message-----
> From: diy_efi-admin at diy-efi.org [mailto:diy_efi-admin at diy-efi.org]On
> Behalf Of Phil Lamovie
> Sent: Tuesday, May 28, 2002 2:37 AM
> To: Diy_efi at diy-efi.org
> Subject: Re: [Diy_efi] On topic Aircraft EFI
>
>
>
>
> Hi gang,
>
> First let me qualify the following with these insights.
>
> I have designed and specified fuel injection for both
> experimental and registered aircraft. One has even flown from
> England to Australia. It was a recreation of the 1919 Vickers
> Vimmy Bomber
>
>
> http://www.diy-efi.org/diy_efi/html_archives/archive_num_116/msg00066.html
>
> The only word that counts is redundant. On this twin engines aircraft
> there
> were 4 fuel pumps in pairs  with pressure sensing swap over. If one
> pump
> dropped the pressure below a set point then the second one was
> switched
> into use.
>
> There were 4 ECUs. Each engine had two complete systems and could
> be switched between the two using a manual or rpm activated switch.
>
> The  c/o was tested before take off. As the ECUs had their own
> fuses, wiring, and sensors they were in fact running continuously
> although
> only one was connected to the injectors at any time.
>
> Engines were fully dynoed for 300 hrs before the aircraft was
> assembled.
> As the systems were speed/density. There were no O2 sensors as they
> would not have lasted the trip on leaded fuel. There were exhaust temp
>
> sensors with alarms set so that even a single cylinder misfire would
> be
> noticed by the flight engineer even if they didn't hear the change in
> pitch.
>
> Oh and after a crash there is always an investigation as to the cause.
>
> We have had one fatality caused by a power flip executed in a
> gyrocopter
> and the report was concluded without any reference to our FI system.
>
> I believe that the word "idiot" was used with some abandon.
>
> Customer was at less than 150 ft racing a friend in a car along
> a highway. He was at full power when the thing hit a low pressure
> spot and inverted. Incident to accident time was approx. 3 seconds.
>
> So all in all EFI is not seen as suspicious by the Aircraft Licensing
> Authorities. In fact they know too well what a 40 year old magneto is.
>
> HTH,
>
> phil
>
>
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