Interesting. One might deduce that the hood latch either succumbed to air pressure forces or body flex was sufficient to cause the latch alignment to move (or both). Assuming it was air pressure, is the consensus that high pressure in the grill area leaks into the trunk and pushes up or low pressure above the hood lifts the trunk (or both)? Rob On Thu, Aug 18, 2016 at 9:01 AM, mark skwarek via DeTomaso < detomaso@server.detomasolist.com> wrote:

The hood comes unlatched at about 165 mph. Happened on all 3 runs right in front of the viewing stands. On Thursday, August 18, 2016 8:53 AM, Tom Shinrock via DeTomaso <detomaso@server.detomasolist.com> wrote: I noticed that you started with the front hood latched but finished with it open. Did it unlatch during the run? Tom 5186

Interesting.A One might deduce that the hood latch either succumbed to air pressure forces or body flex was sufficient to cause the latch alignment to move (or both). Assuming it was air pressure, is the consensus that high pressure in the grill area leaks into the trunk and pushes up or low pressure above the hood lifts the trunk (or both)? RobA On Thu, Aug 18, 2016 at 9:01 AM, mark skwarek via DeTomaso <[1]detomaso@server.detomasolist.com> wrote: A A The hood comes unlatched at aboutA 165 mph. Happened on all 3 runs A A right in front of the viewing stands. A A On Thursday, August 18, 2016 8:53 AM, Tom Shinrock via DeTomaso A A <[2]detomaso@server.detomasolist.com> wrote: A A A I noticed that you started with the front hood latched but finished A A A with it open.A Did it unlatch during the run? A A A Tom A A A 5186 References 1. mailto:detomaso@server.detomasolist.com 2. mailto:detomaso@server.detomasolist.com

You mean like fences or vortex generators on aircraft wings. I¹m not an areo engineer, but I think those devises redirect or concentrate air flow, not keep it from separating from the surface. Maybe the devices actually end up accomplishing just that. I¹m sure a lot of guys on this forum know the answer. Richard Austin, TX #7080 From: DeTomaso <detomaso-bounces@server.detomasolist.com> on behalf of "Joseph F. Byrd, Jr." <byrdjf@embarqmail.com> Date: Thursday, August 18, 2016 at 8:29 To: 'detomaso' <DeTomaso@server.detomasolist.com> Subject: Re: [DeTomaso] SORC # 135 Pictures I wonder if a couple of this (VGs) on the front bumper would prevent airflow separation over the hood and thus keep from lifting. http://solutions.3m.com/wps/portal/3M/en_US/Wind/Energy/Products/Wind_Vortex _Generator/ -----Original Message----- From: DeTomaso [mailto:detomaso-bounces@server.detomasolist.com] On Behalf Of Tom Shinrock via DeTomaso Sent: Thursday, August 18, 2016 8:52 AM To: detomaso@server.detomasolist.com Subject: Re: [DeTomaso] SORC # 135 Pictures I noticed that you started with the front hood latched but finished with it open. Did it unlatch during the run? Tom 5186 -----Original Message----- From: mark skwarek via DeTomaso <detomaso@server.detomasolist.com> To: DeTomaso <DeTomaso@server.detomasolist.com>; Asa Jay Laughton <asajay@asajay.com>; DENNIS ANTENUCCI <teampantera@yahoo.com>; Jim Wallace <pantera_4220@yahoo.com>; Curt and Deb Marsh <cmarsh@zoominternet.net>; Bob Radefeld <bob@radefeld.com>; B. Hower <b.hower3400@yahoo.com>; Frank R. Cirrincione <dagored72@att.net>; Forest Majors <forest.majors@gmail.com>; Jerry Josz <jerry.josz@comcast.net>; John Wallace <jwallace28@cfl.rr.com>; Mark Skwarek <mark.skwarek@gmail.com>; Anya Skwarek <anyaskwarek@gmail.com>; Andrea Skwarek <skwarek.andrea@gmail.com> Sent: Wed, Aug 17, 2016 9:19 pm Subject: [DeTomaso] SORC # 135 Pictures Pics per attached link: [1]https://www.dropbox.com/sh/irli6vjoil3v4tz/ AABUB2Tt5zBRXlqVm5HjKxBCa?dl=0 Mark References 1. https://www.dropbox.com/sh/irli6vjoil3v4tz/AABUB2Tt5zBRXlqVm5HjKxBCa?dl=0 _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list DeTomaso@server.detomasolist.com http://server.detomasolist.com/mailman/listinfo/detomaso To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list DeTomaso@server.detomasolist.com http://server.detomasolist.com/mailman/listinfo/detomaso To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. You mean like fences or vortex generators on aircraft wings. I'm not an areo engineer, but I think those devises redirect or concentrate air flow, not keep it from separating from the surface. Maybe the devices actually end up accomplishing just that. I'm sure a lot of guys on this forum know the answer. Richard Austin, TX #7080 From: DeTomaso <[1]detomaso-bounces@server.detomasolist.com> on behalf of "Joseph F. Byrd, Jr." <[2]byrdjf@embarqmail.com> Date: Thursday, August 18, 2016 at 8:29 To: 'detomaso' <[3]DeTomaso@server.detomasolist.com> Subject: Re: [DeTomaso] SORC # 135 Pictures I wonder if a couple of this (VGs) on the front bumper would prevent airflow separation over the hood and thus keep from lifting. [4]http://solutions.3m.com/wps/portal/3M/en_US/Wind/Energy/Products/Win d_Vortex_Generator/ -----Original Message----- From: DeTomaso [[5]mailto:detomaso-bounces@server.detomasolist.com] On Behalf Of Tom Shinrock via DeTomaso Sent: Thursday, August 18, 2016 8:52 AM To: [6]detomaso@server.detomasolist.com Subject: Re: [DeTomaso] SORC # 135 Pictures I noticed that you started with the front hood latched but finished with it open. Did it unlatch during the run? Tom 5186 -----Original Message----- From: mark skwarek via DeTomaso <[7]detomaso@server.detomasolist.com> To: DeTomaso <[8]DeTomaso@server.detomasolist.com>; Asa Jay Laughton <[9]asajay@asajay.com>; DENNIS ANTENUCCI <[10]teampantera@yahoo.com>; Jim Wallace <[11]pantera_4220@yahoo.com>; Curt and Deb Marsh <[12]cmarsh@zoominternet.net>; Bob Radefeld <[13]bob@radefeld.com>; B. Hower <[14]b.hower3400@yahoo.com>; Frank R. Cirrincione <[15]dagored72@att.net>; Forest Majors <[16]forest.majors@gmail.com>; Jerry Josz <[17]jerry.josz@comcast.net>; John Wallace <[18]jwallace28@cfl.rr.com>; Mark Skwarek <[19]mark.skwarek@gmail.com>; Anya Skwarek <[20]anyaskwarek@gmail.com>; Andrea Skwarek <[21]skwarek.andrea@gmail.com> Sent: Wed, Aug 17, 2016 9:19 pm Subject: [DeTomaso] SORC # 135 Pictures Pics per attached link: [1][22]https://www.dropbox.com/sh/irli6vjoil3v4tz/ AABUB2Tt5zBRXlqVm5HjKxBCa?dl=0 Mark References 1. [23]https://www.dropbox.com/sh/irli6vjoil3v4tz/AABUB2Tt5zBRXlqVm5HjKxBC a?dl=0 _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list [24]DeTomaso@server.detomasolist.com [25]http://server.detomasolist.com/mailman/listinfo/detomaso To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list [26]DeTomaso@server.detomasolist.com [27]http://server.detomasolist.com/mailman/listinfo/detomaso To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. References 1. mailto:detomaso-bounces@server.detomasolist.com 2. mailto:byrdjf@embarqmail.com 3. mailto:DeTomaso@server.detomasolist.com 4. http://solutions.3m.com/wps/portal/3M/en_US/Wind/Energy/Products/Wind_Vortex... 5. mailto:detomaso-bounces@server.detomasolist.com 6. mailto:detomaso@server.detomasolist.com 7. mailto:detomaso@server.detomasolist.com 8. mailto:DeTomaso@server.detomasolist.com 9. mailto:asajay@asajay.com 10. mailto:teampantera@yahoo.com 11. mailto:pantera_4220@yahoo.com 12. mailto:cmarsh@zoominternet.net 13. mailto:bob@radefeld.com 14. mailto:b.hower3400@yahoo.com 15. mailto:dagored72@att.net 16. mailto:forest.majors@gmail.com 17. mailto:jerry.josz@comcast.net 18. mailto:jwallace28@cfl.rr.com 19. mailto:mark.skwarek@gmail.com 20. mailto:anyaskwarek@gmail.com 21. mailto:skwarek.andrea@gmail.com 22. https://www.dropbox.com/sh/irli6vjoil3v4tz/ 23. https://www.dropbox.com/sh/irli6vjoil3v4tz/AABUB2Tt5zBRXlqVm5HjKxBCa?dl=0 24. mailto:DeTomaso@server.detomasolist.com 25. http://server.detomasolist.com/mailman/listinfo/detomaso 26. mailto:DeTomaso@server.detomasolist.com 27. http://server.detomasolist.com/mailman/listinfo/detomaso

Vortex Generators were first developed during flight test of the Boeing XB-47 in 1947-8. The XB-47 was the first large swept-wing jet powered aircraft, and what they realized was that over a certain speed, the outer tips of the wings would begin to lose lift. As that happened, and the portion of the wing closest to the aircraft and thus, further forward on a swept wing design, maintained lift, it shifted the CG, or Center of Gravity, forward, forcing the aircraft to pitch up in a manner that could not be negated by trim or the horizontal stabilizer (tail). Adding the VG's to the outer ends of the wing prevented the loss of lift, enabling much higher speeds. I'm currently working with Capt. Steve Taylor, Chief Pilot for Boeing Flight Services. His father, Capt., Dick Taylor, was the Chief Test Pilot for Boeing on the XB-47. He want on later in his career to create ETOPS and work for its' approval with the FAA for long-range twin engine over-water flight when the 757 and 767 were developed in 1978-83. My .02 from the history books. Mike Thomas Pres., Panteras Northwest Yellow ’74 #6328 -----Original Message----- From: DeTomaso [mailto:detomaso-bounces@server.detomasolist.com] On Behalf Of Daniel C Jones Sent: Thursday, August 18, 2016 7:52 AM Cc: detomaso <DeTomaso@server.detomasolist.com> Subject: Re: [DeTomaso] SORC # 135 Pictures

I think those devises redirect or concentrate air flow, not keep it from separating from the surface.

Vortex generators reduce drag (or delay stall) by tripping the boundary layer from laminar to turbulent flow which delays separation. That generally increases the skin friction but decreases the pressure drag which is usually the larger component. If you can maintain laminar flow without separation, that has lower drag. In the case of hood, I'd be surprised if there is separation and don't think VGs would be of much use. An easy test is to tape yarn strings to the hood. If they streamline, the flow is laminar. If they moved around a bunch, it's turbulent. If they are still, there's separation. Dan Jones