아마존은 이러한 높은 고도에서 운용하는 고속 드론의 허가를 주장을 하고 있습니다-> http://news.nate.com/view/20150729n09468
프롭 한개 고장으로 나머지 프롭으로 회전하면서 하강하다가 다른 드론과 충돌하여 추락시 차량파손이나 인명피해가 발생하면 정해진 비행경로로 제한되겠죠. [아파트 옥상에서 초딩들이 행인들에게 풍선 물폭탄을 던지다가 중력에너지 생각못하고 차를 찌그러트리고 유리창을 파손시키고, 코뼈를 부러트리고 실명 위기로 전치8주 부상등등의 사고들]을 볼때 배달물 추락시는 매우 위험하죠. http://imnews.imbc.com/20dbnews/history/2001/1876451_13453.html
http://www.imaeil.com/sub_news/sub_news_view.php?news_id=33166&yy=2003

그래서 저는 고도 2미터의 초저공 비행전용 도로에서 드론이 다녀야 한다는 생각입니다;;; 하천 위 등등을 지정해서요.. 알고리즘 오류나 모터고장과 눈먼새의 충돌등등의 상황도 고려해야 하니까요. 무인자동차가 고장나면 정지하지만, 무인드론의 경우 고장시 중력에너지에 의한 추락급발진의 시작이니까요.
하천통합정보 시스템을 사용한 드론 도로 지정이라는 상상도 해봅니다. 개인적으로 가장 적당한 드론 비행 경로라고 생각하기 때문에요. http://garam.kwater.or.kr/page.do?page_val=2&page_id=2_1&region=%ED%95%9C%EA%B0%95%EA%B6%8C%EC%97%AD&mosik_val=
미래 지하철에는 지하철 통로를 더 넓게 만들어서 드론길을 만들것 같다는 생각도 해봅니다.
수십년후에는 자기부상 자동차의 아랫고도로 배달 드론들이 다닐수도 있겠죠.

미국같은 경우 땅이 큰만큼 경로만 잘지키면 큰 문제가 없을 수 있겠죠.

http://news.nate.com/view/20150730n30352 어제 발생한 이런 사고를 보면서 여러가지 생각이 드네요. 3kg짜리 물풍선이 중력가속도로 100km 돌파하면 순간충격량이 5톤이라는데... 8.5k 짜리 드론이 부산 해운대 피서객의 머리위로 100km속도로 떨어졌다면..

알고리즘 없이 루프로 더하면 엄청 오래걸리지만

합의공식 사용하면 저의 4번째 개발테스트용 똥컴;;; vmware 리눅으로도 1초 안에 계산됩니다.

$ cat 생코보고_만들어본_엄청큰수_연속더하기.sh
#!/bin/sh
#시작과 끝값중에 홀수가 있으면 코드가 더 많아짐.
echo \(\($2+1\) \*\($2 / 2\)\) -  \(\($1 + 1\) \*\($1 / 2\)\) + $1 |bc

===

===

해당 프로그램 실행

$ ./생코보고_만들어본_엄청큰수_연속더하기.sh 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===========

결과
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[메르스 풍자 KBS개그프로를 제재한 한국 높으신분들과,
미국 에볼라전염병과 미국 물부족 사태에 오버or무관심한
미국언론과 미국 국회의원들에게 분노 개그를 치는 미국대통령]

한국 메르스 사태가 발생하기 한달전, 오바마 대통령의 연설 동영상을 그대로 타이핑했습니다. 그러니까 SNS감청법으로 잡아가지 말아 주세요ㅠㅠ

https://youtu.be/p9NAFN8uMuk

1:22초: (언론과 대통령은)우리가 항상 의견이 일치하진 않겠죠.
[ CNN의 벽보고 대화하는것 같은 에볼라(아프리카 전염병) 보도 아주 고맙습니다!(2014년 미국 에볼라 환자가 발생했던 심각한 상황에서 극우 보수 평론가들의 [오바마 에볼라 음모론]공개 주장 등등) 2주 내내 우리나라(미국)은 워킹데드[전염병 공포를 다룬 컴퓨터 게임]가 되기 일보직전이었어! 그리고 다음날엔 다들 일어나서 신경도 안 쓰더군!! 정말 멋졌지!!! 오, 그리고 혹시나 모를까봐 말해주는데, (지금)미국엔 에볼라가 없어!!!(볼링장, 식당, 공원, 산책로, 택시, 지하철, 항공기, 병원명등등 동선을 모두 공개한 결과)]
그래도 여러분(기자)이 하시는 일(언론보도)에 깊이 감사드립니다.
[멕시코 걸프만 한가운데서 유조선 구멍 나서 그걸 내가(오바마) 틀어막은거 기억해? 기억하냐고? 그게 오바마의 카트리나 중 몇 번째였지? 그게 19번째냐 20번째냐, 난 까먹었어(2010년 지구 역사상 유례가 없는 최악의 환경 재앙을 오바마가 수습한 일을 말하고 있는 것임)]

3:05초: 하지만 우린 더 큰 문제, 예를 들면 기후변화 등에 관심을 가져야 합니다.[이봐요 여러분, 혹시 모르신다면 말인데 캘리포니아는 지금 뼛속까지 빠짝 말랐다고(미국 가뭄사태를 말함) 무슨 새로찍은 매드맥스 영화(사막화된 지구가 나오는 영화) 예고편 같단 말야! 브래들리 쿠퍼(영화배우)가 여기에 그냥 척 토드랑 얘기하러 온것 같아? 그는 물 한 잔 얻으러 온 거라고! 쫌!!!]
과학은 명확합니다! 과학은 명확하게 말하고 있습니다. 가장 기온이 높았던 열해중에 9년이 최근 10년 사이에 들어갑니다. [난(대통령은) 과학자는 아니지만 10까지는 셀줄 알어!]
해수면 상승, 더 강해진 폭풍 [모기도 있고, 기차에서 땀에 쩔어서 냄새 폴폴 풍기는 사람들도 있지. 끔찍하다고!]
제 말은, 요즘 지금 무슨일이 일어나고 있는지 좀 보십시오! 모든 과학자들이 우리가 행동해야 한다고 말하고 있습니다. 펜타곤에선 국가 안보 위기나(기후변화와, 물확보문제) 다름없다고 하죠. 마이애미에선 화창한 날에 홍수가 일어났는데 거기에 어떻게든 조취를 하는 대신, 우린 상원에서 눈싸움 하는 공무원들(국회의원)을 뽑아 놨습니다.[어ㅡ.ㅡ네, 이제 된 것 같은데요;;;]
이건 미친 짓이에요! 우리 애들을 어떡합니까? 대체 어떻게 이렇게나 멍청하고, 근시안적이고, 무책임한 개새끼(국회의원들과 언론들)...[우와 우와 우와 우와!]
왜?
[저기요!]
왜!
[외람된 말씀이지만, 각하, 분노 통역사는 필요 없겠는데요. 당신은 상담이 필요 합니다. 그리고 전 그만둘래요. 이런데서 얼른 빠져나가야겠어.]
나가!
[(미국 대통령 영부인에게 귓속말로) 미국 대통령이 미쳤나봐요]
제 분노 통역사 루터였습니다, 여러분.
(박수,웃음)

1:22 PRESIDENT OBAMA: WE COUNT ON THE PRESS TO SHED LIGHT ON THE MOST IMPORTANT ISSUES.
LUTHER: AND WE CAN TERRIFY OLD WHITE PEOPLE. [LAUGHTER] RIDICULOUS. AND THANK YOU SO MUCH FOR THE WALL-TO-WALL EBOLA  COVERAGE. WE WERE ONE STEP AWAY FROM "THE WALKING DEAD." THAT WAS AWESOME. BY THE WAY, YOU DON'T HAVE EBOLA.
PRESIDENT OBAMA: I APPRECIATE THE WORK THAT YOU DO.
LUTHER: YA'LL REMEMBER WHEN WE HAD THAT WHOLE IN THE GULF OF MEXICO? AND I PLUGGED THAT? WHICH OBAMAS KATRINA WAS THAT ONE? I CAN'T REMEMBER.

3:05 PRESIDENT OBAMA: IT CREATES PROBLEMS FOR DEMOCRACY. WE NEED TO STAY FOCUSED ON BIG CHALLENGES, LIKE CLIMATE CHANGE.
LUTHER: CALIFORNIA IS BONE DRY. IT LOOKS LIKE --매드맥스영화 언급 자막으로는 생략됨-- YA'LL THINK BRADLEY COOPER CAME HERE TO TALK TO A JUDGE? HE NEEDS A GLASS OF WATER. [LAUGHTER]
PRESIDENT OBAMA: THE SCIENCE IS CLEAR. NINE OUT OF THE 10 HOTTEST YEARS EVER WERE IN THE PAST DECADE. RISING SEAS, VIOLENT STORMS.
LUTHER: THIS HE DOES, SWEATY PEOPLE ON THE TRAIN STANKING IT UP, IT'S JUST NASTY.
PRESIDENT OBAMA: EVERY SCIENTIST SAYS WE NEED TO ACT. THE PENTAGON SAYS IT IS A NATIONAL SECURITY RISK. WE HAVE ELECTED OFFICIALS THROWING SNOWBALLS IN THE SENATE. IT IS CRAZY.
LUTHER: IT'S OK, I GOT THIS.
PRESIDENT OBAMA: WHAT KIND OF SHORTSIGHTED, IRRESPONSIBLE --욕설은 자막으로 생략됨--
LUTHER: WHOA, WHOA. [LAUGHTER] [APPLAUSE]
LUTHER: ALL DUE RESPECT SIR, YOU DO NOT NEED AN ANGER TRANSLATOR, YOU NEED COUNSELING. I AND OUT OF HERE, MAN. [LAUGHTER] [APPLAUSE]
PRESIDENT OBAMA: LUTHER, MY ANGER TRANSLATOR, AND LADIES AND GENTLEMEN.