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vettin74(at)yahoo.com
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 Posted: Mon Oct 09, 2006 5:38 am Post subject: drag curve... |
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I belive the statement of terminal velocity in this case is used in the wrong context....it was found during testing with the esqual that a "Stock" aircraft...all of their items no after market stuff; gearleg, pressure recovery wheel pants,ect....that the aircrafts total darg would not allow the airframe accelerate much past 195 IAS at any altitude not that TAS was higher ...and not taking in to account the static system errors but the IAS would not accelerate.....now i did do alot of testing poweron ...below redline RPM and at idle ...the only differance is it took longer and a steeper angle at idle.......the hybrid would go to about 210 but not much more .....and the prototype lightning will find the end of ASI without any problem...245IAS....VNE is not related to the aircrafts drag curve directly it may be mearly that the nubers are the same....but not related .....it is just that the airframe can not accelerate past that AS in its current form......the prototype is clean enough to fly that fast with out induced drag being much of limiting facor but the aircraft lacks the power to pull it much past 205 in level flight .....I am sure this sheds some light but more than likley opens up another can...
Nick
N1BZRich(at)aol.com wrote:
[quote] In a message dated 10/8/2006 12:42:55 P.M. Eastern Daylight Time, dashvii(at)hotmail.com writes:
[quote]It was at an altitude of about 12,000 feet starting, power to idle, nose
down to about 30 degrees and then steeper. I couldn't get anymore out Get your email and more, right on the [url=http://us.rd.yahoo.com/evt=42973/*http://www.yahoo.com/preview] new Yahoo.com[/url] [quote][b]
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pete(at)flylightning.net
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| Posted: Mon Oct 09, 2006 7:20 am Post subject: drag curve... |
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I found a similar result when flying N622EA, our second 3300 powered Esqual back in 2004. It was a very calm day and air was smooth. I started at 10,000ft and kept pushing the nose over at 2850 rpm. Indicated speed went up to about 190 mph and did not increase even with steeper down angles. That aircraft was stock Esqual with wheel pants all around. It just didn’t want to go any faster.
The prototype Lightning goes faster because of a number of things: The gear leg firings, better wheel pants, much different wing, smoother cowl, and significant changes to the high drag areas of the fuselage that were suggested by some former Lancair engineers. I do think we will see some more improvements in drag reduction from minor changes to cowl and cooling drag.
Pete
From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of nick otterback
Sent: Monday, October 09, 2006 8:38 AM
To: lightning-list(at)matronics.com
Subject: drag curve...
I belive the statement of terminal velocity in this case is used in the wrong context....it was found during testing with the esqual that a "Stock" aircraft...all of their items no after market stuff; gearleg, pressure recovery wheel pants,ect....that the aircrafts total darg would not allow the airframe accelerate much past 195 IAS at any altitude not that TAS was higher ...and not taking in to account the static system errors but the IAS would not accelerate.....now i did do alot of testing poweron ...below redline RPM and at idle ...the only differance is it took longer and a steeper angle at idle.......the hybrid would go to about 210 but not much more .....and the prototype lightning will find the end of ASI without any problem...245IAS....VNE is not related to the aircrafts drag curve directly it may be mearly that the nubers are the same....but not related .....it is just that the airframe can not accelerate past that AS in its current form......the prototype is clean enough to fly that fast with out induced drag being much of limiting facor but the aircraft lacks the power to pull it much past 205 in level flight .....I am sure this sheds some light but more than likley opens up another can...
Nick
N1BZRich(at)aol.com wrote:
[quote]
In a message dated 10/8/2006 12:42:55 P.M. Eastern Daylight Time, dashvii(at)hotmail.com writes:
| Quote: |
It was at an altitude of about 12,000 feet starting, power to idle, nose
down to about 30 degrees and then steeper. I couldn't get anymore out
Get your email and more, right on the [url=http://us.rd.yahoo.com/evt=42973/*http:/www.yahoo.com/preview]new Yahoo.com[/url] | Quote: | | http://www.matronics.com/Navigator?Lightning-List |
01234567890123 |
[b]
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