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.
@natlsecuritycnn on Twitter
https://image.google.com.cu/url?rct=j&sa=t&url=https3A2F2Ffleettruckrepairshop.com&sa=D&sntz=1&usg=AFQjCNGaY_nlK9ozc51fqwjiVdMaYZL7rg
I’m amazed, I must say. Rarely do I come across a blog that’s both equally educative and amusing, and without a doubt, you've hit the nail on the head. The issue is something not enough folks are speaking intelligently about. I'm very happy that I found this during my hunt for something relating to this.
https://google.com.et/url?q=j&source=web&rct=j&url=https3A2F2Fmasteringthemanwithin.com&sa=D&sntz=1&usg=AFQjCNGaY_nlK9ozc51fqwjiVdMaYZL7rg
I like it when individuals come together and share ideas. Great website, keep it up!
https://maps.google.com.mm/url?q=https3A2F2Feyedoctorphoenixaz.com&sa=D&sntz=1&usg=AFQjCNGaY_nlK9ozc51fqwjiVdMaYZL7rg
https://clients1.google.com.fj/url?q=https3A2F2Focrvmotorcoachsales.com&sa=D&sntz=1&usg=AFQjCNGaY_nlK9ozc51fqwjiVdMaYZL7rg
Your style is unique compared to other folks I have read stuff from. Thanks for posting when you've got the opportunity, Guess I'll just book mark this site.
https://clients1.google.as/url?sa=t&rct=j&url=https://aikareborn.com
http://yellowpages.uticaod.com/__media__/js/netsoltrademark.php?d=sunglasseseyedoctorsoptometristphoenixaz.com/
http://www.peassc.com/__media__/js/netsoltrademark.php?d=www.arizonasvision.com
Hi, I do believe this is an excellent website. I stumbledupon it 😉 I will revisit once again since I bookmarked it. Money and freedom is the greatest way to change, may you be rich and continue to guide others.
http://freado.com/trackviews.php?action=buy&bookid=16477&buylink=https://mastermindformen.com
como conseguir viagra en valencia http://llviagra.com/ – selge viagra viagra e efeitos
what is in chloroquine https://chloroquineorigin.com/ what is chloroquine used for
itsoktocry viagra https://jokviagra.com/ – does viagra increase blood pressure watermelon rind viagra
cost of viagra at cvs http://loxviagra.com/ – viagra samples is there viagra for women
levitra and masturbation levitra ohne rezept levitra without prescription
king pharmacy Brand Cialis Florinef
cialis blac https://cileve.com/ cialis online delivery overnight
cialis viagra combination canadian pharmacy https://canadacialisstore.com/ buy generic cialis, canadian
Minipress http://canadianeve21.com/ Etodolac
tadalafil (tadalis-ajanta) http://boxtadafil.com/ tadalafil online reviews
natural viagra watermelon https://gensitecil.com/ viagra commercial
I am sure this post has touched all the internet viewers, its really really fastidious piece of writing
on building up new website.
canadian online pharmacies legitimate http://onlinecanda21.com/ viagra from canada
online prescription drugs https://canadianeve21.com/ Olanzapine
Your style is really unique in comparison to other people I've read stuff from. I appreciate you for posting when you've got the opportunity, Guess I will just bookmark this blog.
http://www.igmp.co.kr/redirect.php?url=meganleary.com
http://soundmax.ru/bitrix/rk.php?goto=http://meganleary.com
cialis funny https://asciled.com/ cialis overnight delivery
http://veloman.uz/bitrix/rk.php?goto=http://meganleary.com
order cialis online no prescription australia http://asciled.com/ buying cialis online in australia
bestsellers https://uspharmus.com/ Viagra Professional
priligy price priligy pills usa
levitra discount card https://uslevitraanna.com/ levitra prices walmart
buy cialis toronto http://cileve.com/ cialis pay pal
Aceon http://uspharmus.com/ drugs online
http://sso.aoa.org/Authenticate.aspx?Return=https://qtelldistributorforum.com/457/posts/143-Small-Business-/5921–Services/96011-OCRV-Fleet-Services-Commercial-Truck-Collision-Repair-amp-Paint-Shop.html
Hi, I do think this is a great website. I stumbledupon it 😉 I'm going to come back once again since I bookmarked it. Money and freedom is the best way to change, may you be rich and continue to guide others.
http://www.users9.jabry.com/__media__/js/netsoltrademark.php?d=ocrvcenter.com/rv-repair-shop-la-quinta-california
http://safebrowse.zorgselect.nl/r?url=https://djk-heisingen.de/index.php/component/k2/item/1?start=89110
http://bridgeblue.edu.vn/advertising.redirect.aspx?AdvId=35&url=https://ocrvcenter.com/state-farm-rv-collision-repair-shop-near-me/
online cialis no prescription http://cileve.com/ which is better cialis or levitra
levitra images levitra 20 mg tablet levitra price walgreens
Cardura walmart pharmacy viagra quit smoking
http://parsonstech.com/__media__/js/netsoltrademark.php?d=fashiontuna.com/friday-the-13th/
After looking into a few of the articles on your website, I truly appreciate your technique of blogging. I book-marked it to my bookmark website list and will be checking back in the near future. Please check out my web site as well and tell me what you think.
http://dscottb.com/__media__/js/netsoltrademark.php?d=wildwestlifttrucks.com/hemet-forklifts
https://www.htcdev.com/?URL=https://ocrvcenter.com/durastar-collision-repair-shop-near-me/
https://finalcashback.net/link.php?i=4ec4a98f6a6b4&m=54a556a3a9f3e&guid=ON&url=https://wildwestlifttrucks.com/telehandler-forklift-repair-orange-county-california/
I absolutely love your website.. Very nice colors & theme. Did you develop this site yourself? Please reply back as I’m looking to create my own personal website and would love to know where you got this from or exactly what the theme is named. Kudos!
https://google.rw/url?sa=i&url=https://meganleary.com
Pretty! This was an incredibly wonderful post. Many thanks for providing this info.
https://www.psd-tutorials.de/forum/proxy.php?link=http://www.ocrv.store
http://tetsunet.net/system/rank.php?mode=link&id=538&url=https://meganleary.com
I’m amazed, I must say. Seldom do I encounter a blog that’s equally educative and engaging, and let me tell you, you have hit the nail on the head. The problem is an issue that too few people are speaking intelligently about. I'm very happy I found this during my search for something concerning this.
https://www.stardock.com/bounce/ga.aspx?utmac=UA-73966-2&utmn=619816936&utmr=-&utmp=http:///&guid=ON&url=http://ocrv.xyz
I wanted to thank you for this excellent read!! I absolutely enjoyed every little bit of it. I've got you bookmarked to look at new stuff you post…
http://affordableagility.com/cgi-bin/mcart/ares.cgi?ID=200947528&url=https://ocrv.tv
Howdy! This blog post could not be written any better! Reading through this post reminds me of my previous roommate! He constantly kept preaching about this. I am going to forward this article to him. Fairly certain he will have a great read. Thank you for sharing!
https://images.google.com.py/url?q=j&source=web&rct=j&url=https3A2F2Fmeganleary.com&sa=D&sntz=1&usg=AFQjCNGaY_nlK9ozc51fqwjiVdMaYZL7rg
You're so cool! I don't suppose I have read a single thing like this before. So great to find somebody with a few unique thoughts on this issue. Seriously.. thanks for starting this up. This site is something that's needed on the internet, someone with some originality!
https://www.irisohyama.co.jp/publicity/view.php?query=http://wildwestlifttrucks.com/jurupa-valley-forklifts/
purity solutions tadalafil https://boxtadafil.com/ tadalafil price comparison
cheap viagra for sale https://gensitecil.com/ – is viagra funded by government viagra dosages
Nootropil http://canadianeve21.com/ Erythromycin
buy tadalafil https://elitadalafill.com/ tadalafil 60 mg for sale
cialis canadian pharmacy https://canadacialisstore.com/ how safe and reliable are canadian cialis
buy sildenafil citrate online https://eunicesildenafilcitrate.com/ sildenafil pharmacy australia
caverject injections https://alprostadildrugs.com/ injectable medication for erectile dysfunction
is erectile dysfunction reversible https://canadaerectiledysfunctionpills.com/ erectile dysfunction clinic
vardenafil 10 mg https://vegavardenafil.com/ vardenafil prices india
https://thesisacloud.com/ – thesisacloud.com thesis writing practice thesisacloud.com thesis editors
tadalafil gel https://elitadalafill.com/ tadalafil pills 20mg
sildenafil india pharmacy https://eunicesildenafilcitrate.com/ sildenafil 25mg tab
alprostadil penile suppository https://alprostadildrugs.com/ alprostadil injection instructions
https://thesisacloud.com/ – phd thesis help thesis writing services buy thesis online how do i write a thesis
Представьте партнеру, какой-никакие конкретно
ласки вам милы. Таковая забава очень
волнует, особенно парней, кроме такого, это самая чувственно совсем сближает пару.
Каким бы ни был близким и родимым человек – любой из нас уникален и
имеет собственные эрогенные зоны и крапинки побуждения.
Не стыдитесь явить, будто вам приятно – у вас совсем благодарный
зритель.
Сейчас о медли. Ежели в движение нескольких лет существовать в монотонном графике, в каком месте нет
места спонтанности и новоиспеченым открытиям,
сексапильное хотение имеет возможность приступить угасать само собой.
Этак будто старайся избавляться от рутины и
сыщи часик на интимное времяпровождение с супругом с утра, во время обеденного перерыва, а еще не довольствуйся одним
половым актом, ежели вы оба хотите расширения.
Никак не стыдись разговаривать о
сексе и обсуждать с супругом интимные факторы –
этак возникает доп степень доверия, а ему наверняка придутся по душе
твои фантазии.
Принципиально! Убедись, будто вы находитесь одни и
никто не прервет вас «на самом
увлекательном пространстве», а также заблаговременно позаботься о гигиене.
«Половой акт – это самая только небольшая лагерь сексапильных взаимоотношений.
Эротические которые были использованы и девайсы также приветствуются, ежели предусматривается согласие двух партнёров.
Высококачественные эротические и в том числе и безнравственные использованные материалы способствуют
расширению теоретического и чувственного
опыта человека, однако они различные для
каждого возраста», – отмечает психотерапевт.
Сексуальные игры
На этом местечке большая часть дам обычно думает: это точно не для
нас/ его наверное никак не заведет/ мы станем ощущать себя неловко/ как это вообщем (необходимое подчеркнуть).
Если ты подумала, как сделать мужу приятное
в любовном плане, устремляемся разогнать твои сомнения: ролевые игры — самая никак не только
халат медсестрички либо какая-или другая униформа (но и данные варианты располагают село существовать!).
Попытайтесь вместе с мужем
закрутить какой-никакой-или сценарий, в котором
вы оба будете чувствовать себя необычно, только в то же время достаточно твердо.
https://extremeporn.ru
Hello! It's a best video downloader online – FastFrom, allows to save all videos from internet to you mobile or PC.
https://angel.co/u/fast-from
https://anchor.fm/malek24
https://listswapper.com/author/ramos223/
https://justpaste.it/59qet
https://muckrack.com/andry-robertson
https://ask.fm/jonnlife15
http://forum.mozilla-russia.org/profile.php?section=view&id=129430
https://ljcialishe.com/ – how long does it take for cialis to work https://cialisvja.com/ – how many mg cialis should i take https://viagraonlinejc.com/ – 100mg viagra https://viagratx.com/ – best online pharmacy for viagra https://buycialisxz.com/ – does cialis keep you hard after coming
https://thesisacloud.com/ – thesis editing service phd online i need help writing a thesis law thesis
http://essaywriteris.com/ – write my essay students essay writers wanted online essay writers essay writing company
https://kloviagrli.com/ – is there anything over the counter that works like viagra? https://vigedon.com/ – viagra pills https://llecialisjaw.com/ – cheap cialis online https://jwcialislrt.com/ – cialis from canada to usa https://jecialisbn.com/ – cialis without a doctor prescription
https://dissertationahelp.com/ – demystifying dissertation writing umi dissertation publishing dissertations dissertation template
https://thesisacloud.com/ – thesis services thesis advice thesis literature review thesis proposals
Howdy very nice blog!! Man .. Excellent .. Wonderful .. I'll bookmark your site and take the feeds also…I'm glad to search out so many useful info here within the post, we'd like develop extra techniques on this regard, thank you for sharing. . . . . .
http://www.zortilonrel.com/
I'm curious to find out what blog platform you have been using? I'm experiencing some minor security issues with my latest website and I would like to find something more secure. Do you have any solutions?
https://www.cravefreebies.com
I’d really love to be able to go for collection exactly where I can get advice by other encountered folks that discuss identical awareness. If you have just about any suggestions, you should i want to realize. Many thanks!
http://obvfernandodoy.blogpostie.com
I was suggested this web site by my cousin. I am not sure whether this post is written by him as nobody else know such detailed about my difficulty. You are incredible! Thanks!
https://www.electricpercolatorcoffeepot.com/10-top-coffee-bloggers/
generic viagra online http://viagraonlinejc.com/ how to get a free trial of viagra
ingredient in viagra does viagra make you bigger woman on viagra commercial
cxr4m qgbcq ewd9
tadagra 20 tadalafil max dose tadalafil 60 mg dosage
Nardil is known as the "Gold Standard" for social anxiety. It literally cured mine.
https://nardil.org/global-nardil-shortage
erectile brokenness plaquenil hydroxychloroquine antidepressant without erectile dysfunction
Social network traffic Facebook likes Twitter Followers Instagram Followers and much more. Our Website: https://smmsupreme.com/
https://bit.ly/2Hnl7vE
viagra cheap online uk http://vigedon.com/ female viagra 18
payday loans quincy il payday loans miami fl best places to get cash advances
500000 Scrapebox Blast Live SEO blog Comment Backlinks: https://www.seoclerk.com/Link-Building/842132/500000-Scrapebox-Blast-Live-SEO-blog-Comment-Backlinks
https://www.seoclerk.com/Link-Building/842132/500000-Scrapebox-Blast-Live-SEO-blog-Comment-Backlinks
1500 USA Visitors Daily For 30 Days From Niche Targeted Organic Traffic From Google: https://www.seoclerk.com/Traffic/840816/1500-USA-Visitors-Daily-For-30-Days-From-Niche-Targeted-Organic-Traffic-From-Google
https://www.seoclerk.com/user/jackpower99
1,000,000 GSA Live Backlinks High Quality SEO links + Bad Links Removal: https://www.seoclerk.com/Link-Building/842081/1-000-000-GSA-Live-Backlinks-High-Quality-SEO-links-Bad-Links-Removal
https://www.seoclerk.com/Link-Building/842081/1-000-000-GSA-Live-Backlinks-High-Quality-SEO-links-Bad-Links-Removal
cialis medecin generaliste where to buy cialis in hong kong cialis coupons printable
zithromax 500 mg side effects zithromax online no prescription zithro
chloroquin side effects chloroquine price in india is chloroquine phosphate over the counter
cialis with dapoxetine sale http://llecialisjaw.com/ purchase cialis online canadian
payday loans in harahan louisiana issues with united cash loans payday advance oceanside california
do you need prescription cialis canada cialis 10 mg comprimГ© pelliculГ© boГ®te de 4 price of cialis in the us
Get Our Passive Income System – Step 1: Get our ready made niche websites, Step 2: Setup your Paypal account. Step 3: Run our Unlimited Traffic System from 850 sources of traffic (Approximately 35000 views a day guaranteed). Then just wait and earn your income 100 on autopilot. More info: https://www.k3reviews.com/2020/08/16/monster-mode-700k/
https://www.k3reviews.com/
how long do you have to pay back a payday loan start payday loan business the payday loan store of wisconsin inc
How do I make my previous Yahoo 360 blog posts visible to the public?
https://ask-cloudkicker.tumblr.com/
paypal advance loans cash advance america sacramento payday loans with instant decision
viagra in australia cheap generic viagra on line generic viagra buy online cheap
cialis denmark best prices for generic cialis cialis 60