GQ_jumper 4 #1 October 6, 2006 Has anyone heard how far along the raeford tunnel is in the construction?History does not long entrust the care of freedom to the weak or the timid. --Dwight D. Eisenhower Quote Share this post Link to post Share on other sites
skykittykat 0 #2 October 6, 2006 200+ days to completion as far as I know. Liz Quote Share this post Link to post Share on other sites
MattM 0 #3 October 6, 2006 Construction starts in January. Matt Quote Share this post Link to post Share on other sites
GQ_jumper 4 #4 October 7, 2006 WTF, they haven't even started building it yet? DAMN!!! So I volunteered to go to an anti-terrorist course at Bragg next month for nothingHistory does not long entrust the care of freedom to the weak or the timid. --Dwight D. Eisenhower Quote Share this post Link to post Share on other sites
SkymonkeyONE 3 #5 October 7, 2006 It must be noted that Tim D'Annunzio is paying cash for the tunnel. It simply does not suck to get paid 35 million dollars for your body armor company. Chuck Quote Share this post Link to post Share on other sites
PhreeZone 15 #6 October 7, 2006 This is going to be an indoor recirculated right? If so WOO HOO.. my ass is getting back to Raeford at some point!Yesterday is history And tomorrow is a mystery Parachutemanuals.com Quote Share this post Link to post Share on other sites
SkymonkeyONE 3 #7 October 8, 2006 Yes, indoor recirculator. Larger than any of the other Skyventure tunnels built to date or are on the drawing board as far as I know. Quote Share this post Link to post Share on other sites
matthewcline 0 #8 October 8, 2006 If he gonna have a trailer park too? And can I reserve a spot next to you? MattAn Instructors first concern is student safety. So, start being safe, first!!! Quote Share this post Link to post Share on other sites
GQ_jumper 4 #9 October 8, 2006 Chucky you gonna be in townt the first couple weeks of november?History does not long entrust the care of freedom to the weak or the timid. --Dwight D. Eisenhower Quote Share this post Link to post Share on other sites
MattM 0 #10 October 9, 2006 QuoteYes, indoor recirculator. Larger than any of the other Skyventure tunnels built to date or are on the drawing board as far as I know. its almost 17 feet in diameter. Draw that out and take a look at it - jesus thats huge. 8way is most certainly not a problem. Matt Quote Share this post Link to post Share on other sites
Dazzle 0 #11 October 9, 2006 QuoteQuoteYes, indoor recirculator. Larger than any of the other Skyventure tunnels built to date or are on the drawing board as far as I know. its almost 17 feet in diameter. Draw that out and take a look at it - jesus thats huge. 8way is most certainly not a problem. Where did you see that? SV website says Quote"14 foot, recirculating 1600HP SkyVenture wind tunnel" Quote Share this post Link to post Share on other sites
RossDagley 0 #12 October 12, 2006 Quoteits almost 17 feet in diameter. Draw that out and take a look at it - jesus thats huge. 8way is most certainly not a problem. 8 ways not a problem already if you go to the right tunnel - a couple of teams here in the UK trained in BFB prior to the 8 way nationals a few months ago Last time I checked, the tunnel on the drawing board wasn't going to be 17 ft either, but "16+ ft". Be interesting to see the results with a tunnel that size (big), and that power (small). QuoteThey expect to begin on site construction of this 16 foot, recirculating 1800HP SkyVenture wind tunnel in 4th quarter 2006. Quote Share this post Link to post Share on other sites
MattM 0 #13 October 19, 2006 Quote Where did you see that? SV website says "14 foot, recirculating 1600HP SkyVenture wind tunnel No, it doesn't. http://www.skyventure.com/tunnellocations/default.aspx Its listed under SkyVenture Fort Bragg. BTW, I said *almost* 17 feet. It is 16.8 feet in diameter - which as of right now, will make it the largest wind tunnel in the world. Matt Quote Share this post Link to post Share on other sites
MattM 0 #14 October 19, 2006 Quote Last time I checked, the tunnel on the drawing board wasn't going to be 17 ft either, but "16+ ft". Be interesting to see the results with a tunnel that size (big), and that power (small). Looks to me on SkyVentures website the most common calculation is 100HP per Foot diameter. So actually, it will not be under powered. Matt Quote Share this post Link to post Share on other sites
Stumpy 256 #15 October 19, 2006 Interesting calculation.....Never try to eat more than you can lift Quote Share this post Link to post Share on other sites
Dazzle 0 #16 October 19, 2006 QuoteQuote Where did you see that? SV website says "14 foot, recirculating 1600HP SkyVenture wind tunnel No, it doesn't. http://www.skyventure.com/tunnellocations/default.aspx Its listed under SkyVenture Fort Bragg. BTW, I said *almost* 17 feet. It is 16.8 feet in diameter - which as of right now, will make it the largest wind tunnel in the world. That was where I quoted the size from - I guess they updated it. Unless Tim D'Annunzio is opening more than 1 tunnel as I checked the name to be sure Quote Share this post Link to post Share on other sites
MattM 0 #17 October 19, 2006 QuoteInteresting calculation..... I never claimed to be a mathmasurgeon. Maybe this is better - for every foot in diameter there is 100HP. Matt Quote Share this post Link to post Share on other sites
tunnelfly 0 #18 October 19, 2006 Does that mean Bodyflight Bedford has the motor for a 40 ft (yes, forty!!) tunnel? When you start calculating in area rather than diameter, you find out pretty soon that 1600 hp for a 16 ft tunnel is quite low... No.1 reason NOT to be an astronaut: ...You can't drink beer at zero gravity... Quote Share this post Link to post Share on other sites
RossDagley 0 #19 October 19, 2006 So AirKix and Orlando et al are under-powered you're saying? Both being 1000hp and 12ft (well, Orlando's not a "real" 12ft whereas Airkix is a lot closer but you see my point). I would say the power requirements are not as linear as you suggest - quite the opposite. IMO, both Orlando and Airkix would struggle to push the 160mph barrier - yet some claim more than 160mph is achievable with only 800hp more then Orlando, in a flight chamber approaching 3 times the size? Like I said- I'll be interested to see the results and how they do it. (Edited for speeling ) Quote Share this post Link to post Share on other sites
Dazzle 0 #20 October 20, 2006 Paul said recently that bedfords 4000hp was enough to do about an 18 foot diameter tunnel. Quote Share this post Link to post Share on other sites
Paulipod 0 #21 October 20, 2006 QuotePaul said recently that bedfords 4000hp was enough to do about an 18 foot diameter tunnel. I would think that for belly speeds this may be OK - would certainly start to struggle if you wanted freefly speeds (over 150mph) if we had another 2 ft diameter. (that extra diameter is a shit load of area!!) It is not a linear curve of power to diameter but power to volume.... the more area the power needed increases significantly. But also efficiency of the airflow etc make a large difference too. For example drawing in outside air to cool can make maybe a 20% power difference... or as in our case passing the air over heat exchangers loses power too.. Also how many fliers! and I am guessing the idea would be to increase the number of people also!! But - On past performance you know that these boys are doing their homework... and to be fair I havent seen a single skyventure tunnel to date that has not flown. So maybe we should let them do their own calculations Bodyflight Bedford www.bodyflight.co.uk Quote Share this post Link to post Share on other sites
MattM 0 #22 October 20, 2006 QuoteDoes that mean Bodyflight Bedford has the motor for a 40 ft (yes, forty!!) tunnel? Depends on the design - apparently if it is a SV like tunnel that could be true. Quote When you start calculating in area rather than diameter, you find out pretty soon that 1600 hp for a 16 ft tunnel is quite low... The Raeford tunnel is 1800hp. Matt Quote Share this post Link to post Share on other sites
MattM 0 #23 October 20, 2006 If I remember correctly, the tunnel on Fort Bragg itself has a ridiculous amount of HP but only have 1 huge fan. They can crank it up but it doesn't do too well for free flying. I guess it all depends on the design on how efficient it is going to be. Matt Quote Share this post Link to post Share on other sites
Paulipod 0 #24 October 20, 2006 QuoteIf I remember correctly, the tunnel on Fort Bragg itself has a ridiculous amount of HP but only have 1 huge fan. They can crank it up but it doesn't do too well for free flying.. As far as I understand (from several people I know that have visited) The existing Bragg tunnel is capable of speeds around 150mph and has a motor somewhere around 3000HP - at 14ft in Diameter - also freeflying is not a problem in there... seen alot of photos which show this too Always good to see facilities evolving to new levels... Bodyflight Bedford www.bodyflight.co.uk Quote Share this post Link to post Share on other sites
MattM 0 #25 October 21, 2006 QuoteQuoteIf I remember correctly, the tunnel on Fort Bragg itself has a ridiculous amount of HP but only have 1 huge fan. They can crank it up but it doesn't do too well for free flying.. As far as I understand (from several people I know that have visited) The existing Bragg tunnel is capable of speeds around 150mph and has a motor somewhere around 3000HP - at 14ft in Diameter - also freeflying is not a problem in there... seen alot of photos which show this too Always good to see facilities evolving to new levels... I have about 10 hours in the Fort Bragg tunnel and apparantly all the guys I seen try to FF in there must have sucked. Shows how much desgins are getting so much better. Anyone know when the FB tunnel was built? 70s or 80s wasn't it? Matt Quote Share this post Link to post Share on other sites
