LS6 in a Helicopter - How Cool is This?
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Teching In
Joined: Feb 2003
Posts: 11
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From: MS
LS6 in a Helicopter - How Cool is This? LS6 in a Helicopter - How Cool is This?
Just got another email from Kenneth Hibbs of Carter Aviation. Thought I would share it with you. Here's a link to the previous thread. http://www.z06vette.com/forums/showt...threadid=53817 I'm not trying to endorse their work as I have nothing to do with the company. I just find it interesting and thought that you may too, especially some of you tuners or tuner wannabees in the group. More to come.......................... Mike
"Its been a while since I shot some email off to you but I suppose better late than never. Thanks for the invite to your forum. We will soon be testing another C5-R in our test-stand using a new propeller design as the dyno. Kind of a funny situation, but we'll use the prop to tune the engine then use the engine to stress test the new prop design.
We are working on something your group may be interested in. The way we use the engine in the airplane is that we are in the fuel enrichment mode almost all the time. This was not working out very well for us as the tables gave us lousy power outputs and fuel efficiency. What we are working on now is a modification. Just a preliminary on how we are accomplishing that. We are using wide-band O2 Sensors to do the dithering of the short term fuel tables. I've made an interface board and programmed a pictures controller to offset the O2 sensors output according to the exhaust gas sensors (EGT). Thus we don't run in fuel enrichment mode at all ... but adjust our short term fuel tables to maintain an EGT temperature of 1650 degrees.
I see my thought may not be very coherent but if you would like further details just send me an email. Also when we get this thing in the test-stand I'll send you some more pictures which will show a lot more detail."
Sincerely,
Kenneth Hibbs
khibbs@wf.net
Just got another email from Kenneth Hibbs of Carter Aviation. Thought I would share it with you. Here's a link to the previous thread. http://www.z06vette.com/forums/showt...threadid=53817 I'm not trying to endorse their work as I have nothing to do with the company. I just find it interesting and thought that you may too, especially some of you tuners or tuner wannabees in the group. More to come.......................... Mike
"Its been a while since I shot some email off to you but I suppose better late than never. Thanks for the invite to your forum. We will soon be testing another C5-R in our test-stand using a new propeller design as the dyno. Kind of a funny situation, but we'll use the prop to tune the engine then use the engine to stress test the new prop design.
We are working on something your group may be interested in. The way we use the engine in the airplane is that we are in the fuel enrichment mode almost all the time. This was not working out very well for us as the tables gave us lousy power outputs and fuel efficiency. What we are working on now is a modification. Just a preliminary on how we are accomplishing that. We are using wide-band O2 Sensors to do the dithering of the short term fuel tables. I've made an interface board and programmed a pictures controller to offset the O2 sensors output according to the exhaust gas sensors (EGT). Thus we don't run in fuel enrichment mode at all ... but adjust our short term fuel tables to maintain an EGT temperature of 1650 degrees.
I see my thought may not be very coherent but if you would like further details just send me an email. Also when we get this thing in the test-stand I'll send you some more pictures which will show a lot more detail."
Sincerely,
Kenneth Hibbs
khibbs@wf.net
Last edited by ArrestMeRed; Apr 29, 2004 at 08:42 AM.
Yep, I've seen several helicopters using the LS1 engines. They are excellent engines for the aircraft industry, since they are lightweight and produce alot of efficient power, along with their relatively small size. There are also some airplanes using the LS1 engines, as well as boats.
Tony
Tony
Never met the guy building the 'copters, but I have met the machinist that builds the motors for him; apparently, the guy is kind of "off"... he had a (lightly) turbo'd 427 C5R block installed at one point... and was trying to tune for stoich (14.7:1) at WOT (~6 psi from the turbo). EGT's got up in the 1900 degree range, and the guy wonders why the motor took a dump on him...
TECH Regular
Joined: May 2003
Posts: 404
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From: Jacksonville, FL
Originally Posted by BurnOut
Never met the guy building the 'copters, but I have met the machinist that builds the motors for him; apparently, the guy is kind of "off"... he had a (lightly) turbo'd 427 C5R block installed at one point... and was trying to tune for stoich (14.7:1) at WOT (~6 psi from the turbo). EGT's got up in the 1900 degree range, and the guy wonders why the motor took a dump on him...
ouch!
Doing some research ahead of time would have helped.
