Skin-peeling speed doomed hypersonic glider, U.S. says
April 23rd, 2012
12:06 AM ET

Skin-peeling speed doomed hypersonic glider, U.S. says

By Larry Shaughnessy

A test flight of an aircraft designed to whip around the world at Mach 20 failed when the high speeds peeled the skin off the unmanned plane, Pentagon researchers conclude in a long-awaited report.

For nine minutes in August, the Defense Advanced Research Projects Agency flew its Hypersonic Technology Vehicle at speeds reaching 20 times the speed of sound - fast enough to fly from New York to Los Angeles in less than 12 minutes. But then, something went wrong, and DARPA is finally explaining what happened.

"The most probable cause of the HTV-2 Flight 2 premature flight termination was unexpected aeroshell degradation," the research group explained in a new statement on the test flight.

Translation: The unmanned glider was streaking through the atmosphere when its outer skin started to rip off the airframe.

DARPA knew friction from the glider passing through the air so fast would cause it to heat up. It also expected "a gradual wearing away of the vehicle's skin as it reached stress tolerance limits," based on ground tests.

"However, larger-than-anticipated portions of the vehicle's skin peeled from the aerostructure," the statement said. "The resulting gaps created strong, impulsive shock waves around the vehicle as it traveled nearly 13,000 miles per hour, causing the vehicle to roll abruptly."

When that "anomaly" occurred, a safety computer slowed the glider down and it splashed down in the Pacific Ocean, where it's now probably an artificial reef with a moon roof.

The goal of the project is to create an aircraft that can fly anywhere in the world in under an hour to strike a target. The test plane was launched by a Minotaur IV rocket from Vandenberg Air Force Base in California, then separated from the booster and re-entered the atmosphere over the Pacific.

At Mach 20, friction from the surrounding air subjects the vehicle to temperatures of more than 3,500 degrees Fahrenheit (1,925 C).

DARPA said a group of independent experts decided they couldn't have predicted the problem. "The data from second flight revealed that extrapolating from known flight regimes and relying solely on advanced thermal modeling and ground testing could not successfully predict the harsh realities of Mach 20 atmospheric flight," the agency said.

A 2010 test also ended with the craft plunging into the Pacific. In spite of the problems, DARPA said it did learn a lot from the August test.

"We successfully incorporated aerodynamic knowledge gained from the first flight into the second flight," Maj. Chris Schultz, the program manager, said. And future flights will incorporate what was learned in the second test, he said.

Post by:
Filed under: DARPA
soundoff (756 Responses)
  1. Maserati Ghibli Lease

    Aw, this was an incredibly good post. Finding the time and actual effort to create a very good article… but what can I say… I procrastinate a whole lot and don't seem to get anything done.

    http://www.1911office.info/__media__/js/netsoltrademark.php?d=http://club-maserati.com

    May 16, 2021 at 6:44 pm | Reply
  2. Maserati Starting Prices

    https://vipmurfreesboro.com/ads/adredir?CID=50&AID=8&redirurl=http3A2F2Fmaseratis.net

    May 16, 2021 at 6:18 pm | Reply
  3. Dodge Sprinter Repair Service

    You are so interesting! I don't believe I've read anything like this before. So good to find another person with some original thoughts on this subject. Seriously.. thanks for starting this up. This website is one thing that is required on the internet, someone with some originality!

    http://www.guozhenlai.com/link.php?url=https://ocrvfleetservices.com/videos/

    May 16, 2021 at 5:40 pm | Reply
  4. 2006 Sprinter Climate Control Repair

    I enjoy reading through a post that will make people think. Also, thanks for allowing me to comment!

    http://dmca.com/Protection/Status.aspx?ID=edc817fd-d796-4c84-abb8-d1cb5b2e3719&refurl=http://www.fleetrepairshops.com/sprinter-van-paint-shop-near-me/

    May 16, 2021 at 3:53 pm | Reply
  5. BbshVelm

    where can you buy viagra http://loxviagra.com/ buy viagra online no prescription

    May 16, 2021 at 1:46 pm | Reply
  6. Mercedes Sprinter Brake Caliper Repair Kit

    /

    May 16, 2021 at 12:43 pm | Reply
  7. aika online private server

    It’s difficult to find educated people for this topic, however, you sound like you know what you’re talking about! Thanks

    http://info-az.net/search/rank.cgi?mode=link&id=675&url=aikareborn.com/

    May 16, 2021 at 12:03 pm | Reply
  8. 2006 Sprinter Tank Fuel Pump Repair

    After looking at a few of the blog posts on your blog, I seriously like your way of blogging. I saved it to my bookmark website list and will be checking back in the near future. Take a look at my web site as well and let me know how you feel.

    https://webstolica.ru/go.php?link=https://diplingpaedmediatorreiter.eu/index.php?option=com_phocaguestbook&view=phocaguestbook&id=1&Itemid=4&t=4700&limitstart=57680

    May 16, 2021 at 11:26 am | Reply
  9. Aika Astrobunny

    https://abfragen.schnelle-seiten.de/?action=getUrl&cID=92537&url=http://aikareborn.com

    May 16, 2021 at 11:07 am | Reply
  10. Ecu Repair 2017 Mercedes Sprinter Van Remove Speed Limiter

    https://www.kyoto-osaka.com/search/rank.cgi?mode=link&id=9143&url=https://www.youliketotravel.com/the-best-most-luxurious-hotels-in-barcelona/

    May 16, 2021 at 10:38 am | Reply
  11. Google Marketing Jobs

    Saved as a favorite, I like your blog!

    https://www.sidebar.io/out?url=http://affordableranking.com/

    May 16, 2021 at 7:14 am | Reply
  12. Video Marketing Program

    http://newellpalmer.com.au/?goto=https://affordableranking.com

    May 16, 2021 at 6:17 am | Reply
  13. Lebnreext

    canada medication pharmacy https://xlnpharmacy.com/ Viagra Gold

    May 16, 2021 at 5:50 am | Reply
  14. Lbsofiple

    cialis mastercard http://ucialisdas.com/ – cialis viagara genericcialis

    May 16, 2021 at 5:15 am | Reply
  15. Anooreext

    buying viagra nz https://llviagra.com/ commande viagra pfizer

    May 16, 2021 at 4:44 am | Reply
  16. Internet Marketing Business

    http://wealthandknowledge.org/__media__/js/netsoltrademark.php?d=affordableranking.com

    May 16, 2021 at 4:25 am | Reply
  17. brimonidine

    brimonidine generic brimonidine tartrate ophthalmic

    May 16, 2021 at 2:15 am | Reply
  18. Internet Marketing Review

    https://www.weingut-villa.de/k2/system/language/en/?goto=https://www.affordableranking.com

    May 16, 2021 at 1:05 am | Reply
  19. Lbsofiple

    online cialis http://ucialisdas.com/ – wholesale cialis cheep cialis canada

    May 16, 2021 at 12:59 am | Reply
  20. Content Marketing Job

    http://domupn.ru/redirect.asp?BID=1737&url=http://affordableranking.com

    May 16, 2021 at 12:39 am | Reply
  21. Social Media Marketing Experts

    Spot on with this write-up, I honestly feel this web site needs a lot more attention. I’ll probably be back again to see more, thanks for the information!

    http://www.recycleamerica.org/__media__/js/netsoltrademark.php?d=affordableranking.com

    May 15, 2021 at 9:52 pm | Reply
  22. avana

    avana drug avana tabs

    May 15, 2021 at 9:28 pm | Reply
  23. aika online download

    I like looking through a post that can make men and women think. Also, many thanks for allowing for me to comment!

    https://aikareborn.com/members/wickedslayer.35572

    May 15, 2021 at 9:20 pm | Reply
  24. Aika Online Private Server

    Having read this I thought it was rather enlightening. I appreciate you spending some time and energy to put this information together. I once again find myself personally spending a significant amount of time both reading and posting comments. But so what, it was still worthwhile!

    https://aikareborn.com/members/sopvplenda.27540

    May 15, 2021 at 9:12 pm | Reply
  25. rv trailer repair near me

    https://www.grantrequest.com/SID_1268/default4.asp?SA=EXIT&url=https://ocrvmotorsports.biz/

    May 15, 2021 at 7:39 pm | Reply
  26. Video Marketing Agencies

    https://nilaima.com/link.php?url=https://makemoneymommas.com/

    May 15, 2021 at 5:55 pm | Reply
  27. Eye Doctors Near Me

    I really like reading a post that will make men and women think. Also, many thanks for permitting me to comment!

    http://iaccmeetings.com/Redirect.aspx?destination=arizonasvision.com

    May 15, 2021 at 4:30 pm | Reply
  28. tv repair orange county

    I was more than happy to uncover this website. I want to to thank you for ones time just for this wonderful read!! I definitely really liked every little bit of it and i also have you saved to fav to check out new information on your blog.

    http://historyhub.history.gov/external-link.jspa?url=http://ocrvcenter.biz/

    May 15, 2021 at 1:13 pm | Reply
  29. rv window leak repair

    Way cool! Some extremely valid points! I appreciate you penning this article plus the rest of the site is very good.

    http://emktg.cihi.ca/UrlTracking.aspx?em_key=08jafBPP2lWZoOqmzY/BzF3hFU9jQvN9pRYQwdGchCoOfLXGIWW6Y6UWEMHRnIQqHYmVVeX23ik5bqfdhCmHXL3vARe3YTEE&em_url=https://commercialvanrepairshop.com

    May 15, 2021 at 1:00 pm | Reply
  30. esurance rv insurance

    https://www.jump.fan-site.biz/rank.cgi?mode=link&id=342&url=https://www.ocrvcenter.co

    May 15, 2021 at 12:38 pm | Reply
  31. houses for sale riverstone

    http://www.montessorihelper.com/dap/a/?a=211&p=www.meganleary.com/

    May 15, 2021 at 11:54 am | Reply
  32. realtor coeur d alene idaho

    I was extremely pleased to uncover this site. I wanted to thank you for your time for this particularly wonderful read!! I definitely liked every part of it and i also have you saved as a favorite to check out new information on your blog.

    https://info-az.net/search/rank.cgi?mode=link&id=675&url=https://meganleary.com

    May 15, 2021 at 11:51 am | Reply
  33. Fmrfreext

    cialis 5mg http://cialisee.com/ – cialis ebay walmart price for cialis

    May 15, 2021 at 11:16 am | Reply
  34. Maserati Coupe Prices

    https://clubs.london.edu/click?uid=24ce7c96-76b4-11e6-8631-0050569d64d5&r=https://club-maserati.com/

    May 15, 2021 at 11:08 am | Reply
  35. furniture restoration orange county

    There's definately a great deal to learn about this subject. I love all the points you have made.

    https://www.dogfriendly.com/servlet/refer?from=pageFL&dest=https://ocrvmotorsports.com/

    May 15, 2021 at 11:08 am | Reply
  36. storno brzinol

    What i don't realize is actually how you're no longer really a lot more smartly-favored than you might be now. You're so intelligent. You know therefore significantly when it comes to this matter, produced me personally imagine it from so many numerous angles. Its like women and men are not interested except it's something to do with Lady gaga! Your individual stuffs outstanding. Always take care of it up!

    http://www.stornobrzinol.com/

    May 15, 2021 at 10:40 am | Reply
  37. Eye Specialist Near Me

    Very good write-up. I certainly love this site. Keep writing!

    http://old.evermotion.org/stats.php?url=http://arizonasvision.com

    May 15, 2021 at 10:13 am | Reply
  38. Maserati Mc

    You should take part in a contest for one of the most useful blogs on the internet. I will highly recommend this site!

    https://www.bbs.tut-obmen.ru/redirect/?g=https://club-maserati.com/

    May 15, 2021 at 8:23 am | Reply
  39. repairing rv blinds

    http://dta365.com/dt/uchome/link.php?url=https://ocrvcenter.co/

    May 15, 2021 at 7:49 am | Reply
  40. wood repair near me

    https://webstolica.ru/go.php?link=https://newrvowners.com/

    May 15, 2021 at 7:00 am | Reply
  41. homes for sale hayden lake id

    https://www.valdaveto.net/redirect.php?link=https://www.meganleary.com

    May 15, 2021 at 6:15 am | Reply
  42. Maserati Jacket

    http://www.oltv.cz/redirect.php?url=http://www.club-maserati.com

    May 15, 2021 at 6:15 am | Reply
  43. orange county rv repair

    An outstanding share! I have just forwarded this onto a friend who had been conducting a little research on this. And he actually bought me dinner due to the fact that I found it for him... lol. So let me reword this.... Thanks for the meal!! But yeah, thanks for spending some time to talk about this matter here on your web page.

    https://www.girisimhaber.com/redirect.aspx?url=https://ocrvcenter.mobi/

    May 15, 2021 at 6:15 am | Reply
  44. houses for sale bayview id

    A motivating discussion is definitely worth comment. I do think that you need to publish more on this subject matter, it may not be a taboo subject but generally people don't discuss these issues. To the next! Cheers!!

    http://dta365.com/dt/uchome/link.php?url=https://meganleary.com

    May 15, 2021 at 4:51 am | Reply
  45. realtor near me

    Howdy! I could have sworn I’ve visited this website before but after going through some of the articles I realized it’s new to me. Nonetheless, I’m certainly delighted I found it and I’ll be bookmarking it and checking back often!

    https://www.click.dsp.com/c?type=2&db=mediav&pub=120013_527433_1050746&cus=172_663_12717020_63096188_63096188000&url=https://meganleary.com/

    May 15, 2021 at 3:21 am | Reply
  46. five bedroom homes for sale near me

    http://directory.broomfieldenterprise.com/__media__/js/netsoltrademark.php?d=meganleary.com/

    May 15, 2021 at 2:54 am | Reply
  47. Maserati Kansas City

    https://www.worldarchitecture.org/community/links/?waurl=https://club-maserati.com

    May 15, 2021 at 2:17 am | Reply
  48. Eye Exams Near Me

    Way cool! Some extremely valid points! I appreciate you writing this article and also the rest of the website is really good.

    https://www.wrasb.gov.tw/opennews/opennews01_detail.aspx?nno=2014062701&return=https://arizonasvision.com/

    May 15, 2021 at 2:00 am | Reply
  49. Walk In Eye Exam Near Me

    You are so interesting! I don't believe I have read through a single thing like that before. So great to discover somebody with a few unique thoughts on this subject matter. Really.. many thanks for starting this up. This website is something that is required on the web, someone with some originality!

    https://router.usconcealedcarry.com/auth/invalidate?redirectTo=https://arizonasvision.com/

    May 15, 2021 at 1:54 am | Reply
  50. appliance store orange county ca

    https://www.lesfrontaliers.lu/exit/?url=https://fleetvehiclerepairshop.com

    May 15, 2021 at 1:51 am | Reply
  51. Glasses Near Me

    Pretty! This has been a really wonderful article. Thanks for providing this information.

    https://www.kichink.com/home/issafari?uri=https://www.arizonasvision.com

    May 15, 2021 at 1:44 am | Reply
  52. how to repair rv fiberglass exterior damage

    http://1000love.net/lovelove/link.php?url=newportcatalina.com

    May 15, 2021 at 1:01 am | Reply
  53. Prescription Oakley Sunglasses

    Pretty! This has been an extremely wonderful article. Thanks for providing these details.

    http://e-search.ohimesamaclub.com/y/rank.cgi?mode=link&id=13&url=arizonasvision.com

    May 14, 2021 at 11:17 pm | Reply
  54. Spell Maserati

    http://www.guozhenlai.com/link.php?url=http://www.club-maserati.com/

    May 14, 2021 at 11:02 pm | Reply
  55. Maserati Service

    This is a good tip especially to those fresh to the blogosphere. Simple but very accurate info… Many thanks for sharing this one. A must read article!

    https://www.sherlock.scribblelive.com/r?u=www.club-maserati.com/

    May 14, 2021 at 10:17 pm | Reply
  56. Optometric Near Me

    http://widget.vogel.de/redirect/redirect.cfm?pk=46&target=https://arizonasvision.com

    May 14, 2021 at 9:40 pm | Reply
  57. property for sale hayden lake idaho

    http://www.lidl.media01.eu/set.aspx?dt_url=http://www.meganleary.com/

    May 14, 2021 at 9:08 pm | Reply
  58. Rebffiple

    how much does cialis cost in canada https://rcialisgl.com/ generic cialis 20mg tablets

    May 14, 2021 at 8:03 pm | Reply
  59. real estate for sale near my location

    http://www.chaosns.com/link.php?url=http://www.meganleary.com/

    May 14, 2021 at 7:18 pm | Reply
  60. Maserati Quattroporte 2005

    https://home.guanzhuang.org/link.php?url=https://club-maserati.com

    May 14, 2021 at 5:19 pm | Reply
  61. Contact Lens Exam

    http://track.twshop4coupon.com/track/clicks/3171/c627c2b89e0522dbfe9cbd2e8d2b8914736245cb75e9f0ab416db1046005?t=https://arizonasvision.com

    May 14, 2021 at 4:33 pm | Reply
  62. Myopia Control

    https://www.dmca.com/Protection/Status.aspx?ID=edc817fd-d796-4c84-abb8-d1cb5b2e3719&refurl=https://arizonasvision.com/

    May 14, 2021 at 3:12 pm | Reply
  63. RV Beds Riverside

    https://www.kh8.ievaporate.de/__media__/js/netsoltrademark.php?d=youtube.com/channel/UCGb9aC76nAmfzNsCru2KBHA/videos

    May 14, 2021 at 1:56 pm | Reply
  64. Mb Sprinter Blind Spot Detection Repair

    I’m impressed, I must say. Seldom do I come across a blog that’s both educative and amusing, and let me tell you, you've hit the nail on the head. The issue is something that not enough men and women are speaking intelligently about. Now i'm very happy I stumbled across this during my search for something concerning this.

    https://sessionize.com/redirect/8gu64kFnKkCZh90oWYgY4A/?url=https://sprintervanrepairshop.com/repair-shop-near-me

    May 14, 2021 at 1:51 pm | Reply
  65. truck and trailer repair shops near me

    https://www.isixsigma.com/share.php?site=https://ocrv.biz/rv-repair-shop-vista-california

    May 14, 2021 at 12:31 pm | Reply
  66. riverside collision repair provo

    http://saveourseafarers.com/__media__/js/netsoltrademark.php?d=ocrv.info/rv-repair-shop-indio-california

    May 14, 2021 at 11:57 am | Reply
1 2 3 4 5 6

Leave a Reply to detectives privados en la linea de la concepción


 

CNN welcomes a lively and courteous discussion as long as you follow the Rules of Conduct set forth in our Terms of Service. Comments are not pre-screened before they post. You agree that anything you post may be used, along with your name and profile picture, in accordance with our Privacy Policy and the license you have granted pursuant to our Terms of Service.