Featured Research

from universities, journals, and other organizations

Civilian Helicopter Crash-resistant Fuel Systems Could Be More Effective

Date:
August 23, 2005
Source:
Johns Hopkins University Bloomberg School of Public Health
Summary:
Researchers from the Johns Hopkins Bloomberg School of Public Health Center for Injury Research and Policy found that the crash-resistant standards for the fuel systems of civilian helicopters are not as effective in protecting passengers in survivable crashes as stricter military helicopter standards.

The crash-resistant standards for the fuel systems ofcivilian helicopters are not as effective in protecting passengers insurvivable crashes as stricter military helicopter standards, accordingto a study by researchers from the Johns Hopkins Bloomberg School ofPublic Health Center for Injury Research and Policy. The civilstandards may be less effective than anticipated when they wereestablished in 1994. This is the first study of its kind to determinethe effectiveness of the standards. The study is published in theAugust 2005 issue of Aviation, Space and Environmental Medicine.

Related Articles


Post-crashfires are the single most important hazard to survivors of helicoptercrashes. Even though crash-resistant fuel systems have been almost 100percent effective in survivable crashes of military helicopters,manufacturers and regulators of civil aircraft have been slow toimplement the technology in civil helicopters, explained Dennis F.Shanahan, MD, MPH, corresponding author of the study and an associatein the Johns Hopkins Bloomberg School of Public Health’s Department ofHealth Policy and Management. “In 1994, civil regulations wereimplemented. They were based on the military regulations, but are notas strict as the military requirements. They also applied only to newlycertificated helicopter models.”

The researchers examinedNational Transportation Safety Board data of civil helicopter crashesfrom 1982 to 2004. They compared Bell 206 helicopters withcrash-resistant fuel systems to Aerospatial-350 helicopters, which didnot have crash-resistant fuel systems. They also looked at Bell 206helicopters before and after crash-resistant fuel systems wereimplemented. The Aerospatial-350 helicopters, made after 1981, had thehighest proportion (11 percent) of crashes with post-crash fires. Fewerthan four percent of the Bell 206 helicopter crashes had post-crashfires. Early Bell 206 models had a higher risk of post-crash fire, whencompared to models built after 1982, which is the year Bell Helicoptervoluntarily implemented crash-resistant fuel system standards similarto the civil regulations that wouldn’t be formally mandated for another12 years.

Fuel containment and isolation of fuel from ignitionsources is critical to surviving a crash. Uncontained fuel turns into amist, which when exposed to an ignition source, produces a fireball,typically before the helicopter comes to rest. This makes it moredifficult for occupants to survive a crash.

“Post-crash fires area serious issue that doesn’t often get the attention it deserves. Weshould be doing everything possible to increase helicopter crashvictims’ chance of survival,” said Susan P. Baker, MPH, a professor inthe Bloomberg School of Public Health’s Department of Health Policy andManagement and Center for Injury Research and Policy.

Co-authors of the study are Mark S. Hayden, Dennis F. Shanahan, Li-Hui Chen and Susan P. Baker.

“Crash-ResistantFuel System Effectiveness in Civil Helicopter Crashes” was supported bya grant from the National Center for Injury Prevention and Control atthe Centers for Disease Control and Prevention.


Story Source:

The above story is based on materials provided by Johns Hopkins University Bloomberg School of Public Health. Note: Materials may be edited for content and length.


Cite This Page:

Johns Hopkins University Bloomberg School of Public Health. "Civilian Helicopter Crash-resistant Fuel Systems Could Be More Effective." ScienceDaily. ScienceDaily, 23 August 2005. <www.sciencedaily.com/releases/2005/08/050823081958.htm>.
Johns Hopkins University Bloomberg School of Public Health. (2005, August 23). Civilian Helicopter Crash-resistant Fuel Systems Could Be More Effective. ScienceDaily. Retrieved January 30, 2015 from www.sciencedaily.com/releases/2005/08/050823081958.htm
Johns Hopkins University Bloomberg School of Public Health. "Civilian Helicopter Crash-resistant Fuel Systems Could Be More Effective." ScienceDaily. www.sciencedaily.com/releases/2005/08/050823081958.htm (accessed January 30, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, January 30, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Nanoscale Sensor Could Help Wine Producers and Clinical Scientists

Nanoscale Sensor Could Help Wine Producers and Clinical Scientists

Reuters - Innovations Video Online (Jan. 30, 2015) — A nanosensor that mimics the oral effects and sensations of drinking wine has been developed by Danish and Portuguese researchers. Jim Drury saw it in operation. Video provided by Reuters
Powered by NewsLook.com
Tesla 'Insane Mode' Gives Unsuspecting Passengers the Ride of Their Life

Tesla 'Insane Mode' Gives Unsuspecting Passengers the Ride of Their Life

RightThisMinute (Jan. 29, 2015) — If your car has an "Insane Mode" then you know it&apos;s fast. Well, these unsuspecting passengers were in for one insane ride when they hit the button. Tesla cars are awesome. Video provided by RightThisMinute
Powered by NewsLook.com
Now Bill Gates Is 'Concerned' About Artificial Intelligence

Now Bill Gates Is 'Concerned' About Artificial Intelligence

Newsy (Jan. 29, 2015) — Bill Gates joins the list of tech moguls scared of super-intelligent machines. He says more people should be concerned, but why? Video provided by Newsy
Powered by NewsLook.com
Senate Passes Bill for Keystone XL Pipeline

Senate Passes Bill for Keystone XL Pipeline

AP (Jan. 29, 2015) — The Republican-controlled Senate has passed a bipartisan bill approving construction of the Keystone XL oil pipeline. (Jan. 29) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins