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 (1,362 Responses)
  1. RV Repair Fountain Valley

    https://kuwait-airways.com/__media__/js/netsoltrademark.php?d=http://ocrvcenter.com/rv-step-repair-near-me

    June 16, 2021 at 4:54 am | Reply
  2. RV Repair Shops Near Me Now

    May I simply say what a relief to discover somebody who actually understands what they are talking about on the internet. You certainly know how to bring a problem to light and make it important. More people ought to read this and understand this side of the story. I can't believe you aren't more popular because you certainly possess the gift.

    https://studivz.net/Link/Dereferer/?https://www.ocrvcenter.com/rv-repair-shop-redondo-beach-california/

    June 16, 2021 at 3:58 am | Reply
  3. Camper Repair Near Me

    Oh my goodness! Incredible article dude! Thank you so much, However I am encountering troubles with your RSS. I donít know the reason why I cannot subscribe to it. Is there anybody having the same RSS problems? Anybody who knows the solution will you kindly respond? Thanks!!

    http://fireflyvodka.com/__media__/js/netsoltrademark.php?d=https://ocrvcenter.com/rv-repair-shop-la-quinta-california/

    June 16, 2021 at 3:27 am | Reply
  4. RV Repair Orange County

    http://boosterblog.com/vote-815901-624021.html?adresse=ocrvcenter.com/motorhome-roof-repair-near-me/

    June 15, 2021 at 11:34 pm | Reply
  5. RV Repair Shops Near My Location

    https://www.infotiger.com/addurl.html?url=https://ocrvcenter.com/motorhome-mattress-repair-near-me

    June 15, 2021 at 9:30 pm | Reply
  6. RV Repair San Clemente California

    An outstanding share! I've just forwarded this onto a friend who has been conducting a little homework on this. And he in fact ordered me lunch because I found it for him... lol. So allow me to reword this.... Thanks for the meal!! But yeah, thanx for spending time to discuss this topic here on your website.

    https://channel.iezvu.com/share/UnboxingyanálisisdeChromecast2?page=http://ocrvcenter.com/rv-repair-shop-montebello-california

    June 15, 2021 at 9:11 pm | Reply
  7. Sprinter Repair Orange County

    http://www.atari.org/links/frameit.cgi?footer=YES&back=https://ocrvcenter.com/rv-repair-shop-huntington-beach-california/

    June 15, 2021 at 8:22 pm | Reply
  8. RV Repair Shops Near Me Now

    https://elephone.hk/static/redirect?url=https://ocrvcenter.com/industrial-vehicle-collision-repair-shop-near-me/

    June 15, 2021 at 8:18 pm | Reply
  9. RV Repairs Near Me

    http://lipperhey.com/en/www.ocrvcenter.com/rv-repair-shop-norwalk-california

    June 15, 2021 at 5:16 pm | Reply
  10. RV Repair Shops Near Me Now

    http://www.searchesinteractive.com/__media__/js/netsoltrademark.php?d=ocrvcenter.com/rv-repair-shop-santa-ana-california

    June 15, 2021 at 4:53 pm | Reply
  11. RV Repair Orange County California

    http://www.otohits.net/home/redirectto?url=www.ocrvcenter.com/tour-bus-collision-repair-shop-near-me

    June 15, 2021 at 4:31 pm | Reply
  12. RV Repair Near Me

    https://ww17.tudominio.com/__media__/js/netsoltrademark.php?d=ocrvcenter.com/commercial-truck-collision-repair-shop-near-me

    June 15, 2021 at 1:51 pm | Reply
  13. RV Repair Shops Nearby

    Spot on with this write-up, I absolutely feel this web site needs a lot more attention. Iíll probably be back again to read through more, thanks for the information!

    http://www.brettterpstra.com/share/fymdproxy.php?url=http://www.ocrvcenter.com/commercial-bus-collision-repair-shop-near-me

    June 15, 2021 at 1:28 pm | Reply
  14. RV Repair Around Me

    http://www.bigpinkcookie.com/__media__/js/netsoltrademark.php?d=ocrvcenter.com/shuttle-bus-collision-repair-shop-near-me/

    June 15, 2021 at 1:25 pm | Reply
  15. RV Repair Places Near Me

    Itís nearly impossible to find knowledgeable people for this topic, however, you seem like you know what youíre talking about! Thanks

    http://www.cia.org.ar/BAK/bannerTarget.php?url=http://www.ocrvcenter.com/class-b-collision-repair-shop-near-me

    June 15, 2021 at 12:59 pm | Reply
  16. RV Repair Seal Beach

    https://cbts2.thischurch.org/mod/admin/view-image.php?i=/share/mod_news_images/2767.jpg&ru=www.ocrvcenter.com/rv-repair-shop-la-habra-california

    June 15, 2021 at 11:41 am | Reply
  17. RV Repair Shops Near Me Now

    http://board-en.drakensang.com/proxy.php?link=https://ocrvcenter.com/esurance-rv-collision-repair-shop-near-me/

    June 15, 2021 at 8:15 am | Reply
  18. RV Repair Near Me

    Greetings! Very helpful advice within this post! It's the little changes that will make the most important changes. Thanks a lot for sharing!

    http://webhosting-wmd.hr/index?URL=www.ocrvcenter.com/rv-repair-shop-upland-california

    June 15, 2021 at 7:45 am | Reply
  19. RV Repair

    You have made some good points there. I looked on the web to find out more about the issue and found most people will go along with your views on this site.

    https://web28.werkbank.bayern-online.de/cgi-bin/forum/gforum.cgi?url=www.ocrvcenter.com/rv-repair-shop-apple-valley-california

    June 15, 2021 at 7:03 am | Reply
  20. Willie Kundrick

    Have you ever heard of second life (sl for short). It is essentially a game where you can do anything you want. sl is literally my second life (pun intended lol). If you would like to see more you can see these sl websites and blogs

    http://thisteachinglife.blogspot.com/2005/03/early-career-teachers-conference.html

    June 15, 2021 at 6:48 am | Reply
  21. Camper Repair Near Me

    http://barrypopik.com/index.php?URL=ocrvcenter.com/rv-repair-shop-cudahy-california/

    June 15, 2021 at 6:46 am | Reply
  22. RV Repair Near My Location

    http://htcdev.com/?URL=www.ocrvcenter.com/rv-repair-shop-granada-hills-california

    June 15, 2021 at 5:01 am | Reply
  23. RV Repair Shops Nearby

    https://cassinausa.com/__media__/js/netsoltrademark.php?d=ocrvcenter.com/business-vehicle-collision-repair-shop-near-me/

    June 15, 2021 at 3:29 am | Reply
  24. Sprinter Repair Shop Near Me

    Iím amazed, I have to admit. Rarely do I encounter a blog thatís both educative and engaging, and let me tell you, you have hit the nail on the head. The issue is something which not enough men and women are speaking intelligently about. I'm very happy that I came across this during my search for something regarding this.

    https://localbusiness.theledger.com/__media__/js/netsoltrademark.php?d=https://ocrvcenter.com/rv-repair-shop-chula-vista-california/

    June 15, 2021 at 3:23 am | Reply
  25. RV Repair Near My Location

    https://www.barrypopik.com/index.php?URL=www.ocrvcenter.com/rv-repair-shop-pasadena-california/

    June 15, 2021 at 1:00 am | Reply
  26. RV Repair Mission Viejo

    https://htcdev.com/?URL=http://ocrvcenter.com/motorhome-couch-repair-near-me

    June 15, 2021 at 12:56 am | Reply
  27. RV Repair Nearby

    https://blog.ss-blog.jp/_pages/mobile/step/index?u=ocrvcenter.com/rv-repair-shop-san-marcos-california/

    June 15, 2021 at 12:50 am | Reply
  28. RV Repair Garden Grove

    http://yellowpages.oakridger.com/__media__/js/netsoltrademark.php?d=http://www.ocrvcenter.com/citystar-collision-repair-shop-near-me

    June 15, 2021 at 12:33 am | Reply
  29. RV Repair Orange County California

    You ought to be a part of a contest for one of the most useful sites online. I will highly recommend this website!

    http://www.menedzserpraxis.hu/sharing/?menu=email&url=www.ocrvcenter.com/motorhome-camera-repair-near-me/

    June 14, 2021 at 11:45 pm | Reply
  30. RV Repair Around Me

    That is a really good tip particularly to those fresh to the blogosphere. Brief but very accurate informationÖ Appreciate your sharing this one. A must read post!

    http://m.landing.siap-online.com/?goto=http://www.ocrvcenter.com/motorhome-roof-repair-near-me

    June 14, 2021 at 11:31 pm | Reply
  31. Sprinter Repair Shop Near Me

    https://www.georgewbushlibrary.smu.edu/exit.aspx?url=ocrvcenter.com/motorhome-generator-repair-near-me/

    June 14, 2021 at 11:18 pm | Reply
  32. RV Repair Mission Viejo

    http://www.deanspotter.com/__media__/js/netsoltrademark.php?d=ocrvcenter.com/rv-ac-repair-near-me/

    June 14, 2021 at 11:17 pm | Reply
  33. RV Repair California

    http://vi.paltalk.com/client/webapp/client/External.wmt?url=http://www.ocrvcenter.com/digger-truck-collision-repair-shop-near-me

    June 14, 2021 at 10:10 pm | Reply
  34. Sprinter Repair Shops Near Me

    Good post. I learn something new and challenging on sites I stumbleupon on a daily basis. It's always useful to read content from other authors and practice something from their sites.

    http://studivz.net/Link/Dereferer/?https://www.ocrvcenter.com/rv-service-near-me

    June 14, 2021 at 9:58 pm | Reply
  35. condos for sale near me

    You are so interesting! I don't believe I've read through something like that before. So good to discover somebody with a few unique thoughts on this topic. Seriously.. many thanks for starting this up. This web site is one thing that's needed on the web, someone with a little originality!

    http://sc.devb.gov.hk/TuniS/www.whatisdisplayadvertising.com/

    June 14, 2021 at 6:49 pm | Reply
  36. td bank near me

    http://www.mpx.net/suche.html?cc=1&url=http://www.quickstopsmokeshops.com/

    June 14, 2021 at 6:22 pm | Reply
  37. lawn mower repair near me

    https://www.yousite.com/__media__/js/netsoltrademark.php?d=www.usedforkliftsforsaleorangecounty.com

    June 14, 2021 at 4:21 pm | Reply
  38. kia dealer near me

    I love it when folks come together and share views. Great website, keep it up!

    http://catalog-display.com/__media__/js/netsoltrademark.php?d=http://wholisticcircle.com/

    June 14, 2021 at 4:19 pm | Reply
  39. indian food near me

    https://yellowpages.observer-reporter.com/__media__/js/netsoltrademark.php?d=https://www.bestlocalnearme.com/

    June 14, 2021 at 3:49 pm | Reply
  40. vietnamese food near me

    http://cl.angel.wwx.tw/debug/frm-s/http://ashleysmaldino.com/

    June 14, 2021 at 3:24 pm | Reply
  41. academy sports near me

    http://ww17.dummy.com/__media__/js/netsoltrademark.php?d=https://ocrvandtrucks.com

    June 14, 2021 at 2:59 pm | Reply
  42. homes for rent near me

    http://fkteplice.cz/media_show.asp?type=2&url_back=https://www.ocrv.vip/

    June 14, 2021 at 2:21 pm | Reply
  43. escorts near me

    https://www.neurostar.com/en/redirect.php?url=http://www.ocrvfleetservices.com/

    June 14, 2021 at 1:45 pm | Reply
  44. bank of america atm near me

    Hello there, I believe your web site could possibly be having browser compatibility problems. When I look at your blog in Safari, it looks fine however when opening in Internet Explorer, it's got some overlapping issues. I simply wanted to provide you with a quick heads up! Besides that, wonderful blog!

    https://kms.fr/Eprv/Spe/GoPartenaires/?Url=https://www.bestshopnearme.com

    June 14, 2021 at 12:38 pm | Reply
  45. power outage near me

    http://lolinez.com/?www.ocrv.art

    June 14, 2021 at 11:49 am | Reply
  46. smiths near me

    http://profil.uniag.sk/pracoviste/predmety.pl?id=56;zpet=www.shelbydaniellephotography.com/;lang=sk

    June 14, 2021 at 8:55 am | Reply
  47. bowling alley near me

    http://lcu.hlcommission.org/lcu/pages/auth/forgotPassword.aspx?Returnurl=https://mymixlab.com

    June 14, 2021 at 7:57 am | Reply
  48. chili's near me

    Good article. I definitely love this site. Continue the good work!

    http://horizoninteractiveawards.com/index.php?URL=http://www.fartfantasy.net

    June 14, 2021 at 7:22 am | Reply
  49. fun things to do near me

    https://www.bing.com/news/apiclick.aspx?ref=FexRss&aid=&url=https://www.spokanevalleywebdesign.com

    June 14, 2021 at 7:06 am | Reply
  50. ymca near me

    Very good article. I am dealing with some of these issues as well..

    http://www.week.co.jp/skion/cljump.php?clid=129&url=http://www.ocrvmotorsports.co/

    June 14, 2021 at 5:28 am | Reply
  51. cloroquine

    what is hydroxychloroquine used for aralen price usa hydrochloquine

    June 14, 2021 at 5:11 am | Reply
  52. muffler shop near me

    Pretty! This was a really wonderful article. Thank you for supplying this info.

    http://proteinaute.com/lib/request/redirect.php?url=http://www.ilovegirlfarts.com/

    June 14, 2021 at 4:48 am | Reply
  53. medical supply store near me

    Oh my goodness! Amazing article dude! Thank you, However I am encountering issues with your RSS. I donít know why I can't join it. Is there anyone else having similar RSS issues? Anyone that knows the answer can you kindly respond? Thanks!!

    http://www.aesham.com/__media__/js/netsoltrademark.php?d=ocrvexperts.com/

    June 14, 2021 at 4:12 am | Reply
  54. bao bong da 24h

    Kênh Thẳng đá Bóng Hôm Nayxem vtv1 trực tuyến nhanh nhấtTrên băng ghế giảng dạy, Lebanon đã bửa nhiệm Ramiro Lopez cách đây 3 tuần. Nhà cầm cố quân nhân viên Tây Ban Nha công ty yếu thực hiện việc trên Ý và từng có thời gian thực hiện việc tại Kuwait.|Và NHM bóng đá Việt Nam đang hóng Minh Trí cùng đồng đội hóa giải đối thủ để tạo lợi thế đến trận lượt về tại đây hai ngày. Chelsea đã nên trải qua 8 phút bù giờ nghẹt thở đảm bảo thành công.

    https://bongdatv.vn/detail/vao-roi-tv-94029.html

    June 14, 2021 at 4:04 am | Reply
  55. jewelers near me

    Very good write-up. I absolutely love this site. Stick with it!

    http://mitsui-shopping-park.com/lalaport/iwata/redirect.html?url=http://newmomgiftshop.com

    June 14, 2021 at 3:15 am | Reply
  56. colleges near me

    http://fjb.kaskus.co.id/redirect?url=https://ppcpostfalls.com/

    June 14, 2021 at 2:20 am | Reply
  57. driving schools near me

    https://wbmonitor.bibb.de/dereferer.php?link=whatisdisplayadvertising.com

    June 14, 2021 at 2:02 am | Reply
  58. VelmSwa

    •cialis overnight delivery generic cialis cialis 20 mg

    June 14, 2021 at 1:59 am | Reply
  59. asian food near me

    You're so cool! I do not think I have read a single thing like that before. So wonderful to discover someone with some unique thoughts on this subject. Seriously.. many thanks for starting this up. This website is something that's needed on the web, someone with a little originality!

    http://stationcaster.com/stations/kabc/index.php?loadfeed=true&rss=rankemailads.com/

    June 14, 2021 at 1:46 am | Reply
  60. thai food near me

    You are so awesome! I don't believe I've truly read through a single thing like that before. So nice to discover another person with genuine thoughts on this subject matter. Seriously.. thank you for starting this up. This web site is one thing that is needed on the web, someone with a bit of originality!

    http://www.ymg-ssz.jp/cms/modules/wordpress0/wp-ktai.php?view=redir&url=romeomotorsports.com

    June 14, 2021 at 1:19 am | Reply
  61. dealerships near me

    https://basepath.com/ClassicCameras/article.php?url=https://anchoredperformancegym.com/

    June 14, 2021 at 1:14 am | Reply
  62. driving range near me

    http://aaronsw.com/2002/display.cgi?t=<a+href=http://postfallswebsites.com/

    June 14, 2021 at 1:08 am | Reply
  63. oreillys near me

    http://m.landing.siap-online.com/?goto=www.uadplugins.com

    June 14, 2021 at 1:08 am | Reply
  64. mcdonalds near me

    http://www.kronenberg.org/download.php?download=theholistichows.com/&filename=rpn-calculator_0.9.0.wdgt.zip&project=RPN-Calculator

    June 14, 2021 at 12:14 am | Reply
  65. mechanic near me

    This is a topic that is close to my heart... Take care! Where are your contact details though?

    http://www.thenfljerseychinacheap.com/__media__/js/netsoltrademark.php?d=http://orangecountyheatingandairconditioningspecialists.com/

    June 14, 2021 at 12:01 am | Reply
  66. furniture near me

    http://kyoto-osaka.com/search/rank.cgi?mode=link&id=9143&url=https://blowoutvapes.com/

    June 13, 2021 at 10:58 pm | Reply
  67. gravel near me

    https://j-friends.jp/cgi/search/rank.cgi?mode=link&id=8555&url=https://newrvowners.com/

    June 13, 2021 at 10:31 pm | Reply
  68. arcade near me

    Hi, I do believe this is an excellent web site. I stumbledupon it 😉 I am going to revisit yet again since I book-marked it. Money and freedom is the best way to change, may you be rich and continue to help other people.

    http://www.flashdrivexpress.com/__media__/js/netsoltrademark.php?d=www.postfallswebsites.com/

    June 13, 2021 at 9:41 pm | Reply
  69. campers for sale near me

    http://www.retreatsintl.org/__media__/js/netsoltrademark.php?d=bikecraze.com

    June 13, 2021 at 9:38 pm | Reply
  70. five below near me

    http://portagelibrary.info/?URL=http://www.developingprospects.com/

    June 13, 2021 at 9:24 pm | Reply
  71. circle k near me

    https://www.property.hk/eng/cnp/content.php?h=https://spokanevalleymarketing.com

    June 13, 2021 at 9:23 pm | Reply
  72. reextGtv

    lloyds pharmacy online reliable pharmacy rx buy online pharmacy uk

    June 13, 2021 at 9:18 pm | Reply
1 2 3 4 5 6 7 8 9 10 11 12

Leave a Reply to Maserati Ghibli Lease


 

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.