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Re: ram pressure
brian milchalk please change my e-mail address to firstname.lastname@example.org. thank you.
mike schmitt, velocity elite n72m
> From: Brian K. Michalk <email@example.com>
> To: Al Gietzen <firstname.lastname@example.org>
> Cc: email@example.com
> Subject: Re: ram pressure
> Date: Thursday, May 28, 1998 10:52 AM
> > At least one issue would be vapor lock. When the electrical pump fails (or
> > electric system failure) you have no pump. May not be a problem during
> Hmm. Okay. Failure analysis: What is more failure prone?
> I'm already installing dual batteries with primary and secondary
> busses. Two boost pumps? I don't know.
> > Or even without vapor lock; can you get enough flow to the carb for full
> > power operation without pressure? Don't count on it!
> That's what the tests are for. The Bingelis books outline tests
> for gravity feed. You place the plane in level and at climb
> attitude. Fill up the tanks and then make sure you get
> something like 1.5 times the fuel flow of max power operation.
> I'm not sure of the value, but it's like 1.5 or 2. You have to
> go through all of the plumbing that includes filters and gascolators
> too. Also make sure you are not getting any added benefit from
> siphoning. Another thing is that you must get this sustained
> rate until the tanks are empty.
> I'd have to go look at the books again, but this is as well
> as I can recall at the moment.
> Brian Michalk <http://www.awpi.com/michalk>
> Life is what you make of it ... never wish you had done something.
> Aviator, experimental aircraft builder, motorcyclist, SCUBA diver
> musician, home-brewer, entrepenuer and SINGLE!