Featured Research

from universities, journals, and other organizations

Beetles Could Prove A Hit With The Aircraft Industry

Date:
December 9, 2003
Source:
Engineering And Physical Science Research Council
Summary:
A species of beetle, that squirts its predators with a high-pressure spray of boiling liquid, could provide the key to significant improvements in aircraft engine design.

A species of beetle, that squirts its predators with a high-pressure spray of boiling liquid, could provide the key to significant improvements in aircraft engine design.

The bombardier beetle's unique natural combustion technique is being studied to see if it can be copied for use in the aircraft industry.

Scientists studying the bombardier beetle's jet-based defence mechanism hope it will help to solve a problem that can occasionally occur at high altitude – re-igniting a gas turbine aircraft engine which has cut out, when the outside air temperature is as low as minus 50 degrees Centigrade!

Due to start early next year, this innovative 3-year project at the University of Leeds is being funded by the Engineering and Physical Sciences Research Council (EPSRC).

The bombardier beetle defends itself by squirting predators (ants, frogs, spiders) with a high-pressure jet of boiling liquid in a rapid-fire action called pulse combustion. Building on work by Professor Tom Eisner at Cornell University, the new project will set out to improve understanding of the beetle's unique pulse combustion and nozzle ejection mechanism. It also aims to identify how combustion engineers could exploit this understanding to practical effect. For example, knowledge gained could aid the development of a device that helps relight aircraft engines at high altitude by squirting plasma into the engine's combustion chamber more accurately.

The project will involve computer-based numerical and mathematical modelling. Initially it will focus on understanding the beetle's heart-shaped miniature combustion chamber, which is less than 1 millimetre long. Simulations for a larger chamber around a few centimetres long will then be conducted, in which gases are ignited by raising the chamber's surface temperature. The effect of different shaped nozzle outlets and explosion chambers will also be examined.

The project team will be led by Andy McIntosh, Professor of Thermodynamics and Combustion Theory at the Energy and Resources Research Institute in the University of Leeds. Professor McIntosh says: "The bombardier beetle's defence mechanism represents a very effective natural form of combustion. Copying such natural mechanisms is part of the growing field of biomimetics where scientists learn much from intricate design features already in nature. Understanding this beetle better could lead to significant advances in combustion research."


Story Source:

The above story is based on materials provided by Engineering And Physical Science Research Council. Note: Materials may be edited for content and length.


Cite This Page:

Engineering And Physical Science Research Council. "Beetles Could Prove A Hit With The Aircraft Industry." ScienceDaily. ScienceDaily, 9 December 2003. <www.sciencedaily.com/releases/2003/12/031209075501.htm>.
Engineering And Physical Science Research Council. (2003, December 9). Beetles Could Prove A Hit With The Aircraft Industry. ScienceDaily. Retrieved July 22, 2014 from www.sciencedaily.com/releases/2003/12/031209075501.htm
Engineering And Physical Science Research Council. "Beetles Could Prove A Hit With The Aircraft Industry." ScienceDaily. www.sciencedaily.com/releases/2003/12/031209075501.htm (accessed July 22, 2014).

Share This




More Matter & Energy News

Tuesday, July 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Government Approves East Coast Oil Exploration

Government Approves East Coast Oil Exploration

AP (July 18, 2014) The Obama administration approved the use of sonic cannons to discover deposits under the ocean floor by shooting sound waves 100 times louder than a jet engine through waters shared by endangered whales and turtles. (July 18) Video provided by AP
Powered by NewsLook.com
Sunken German U-Boat Clearly Visible For First Time

Sunken German U-Boat Clearly Visible For First Time

Newsy (July 18, 2014) The wreckage of the German submarine U-166 has become clearly visible for the first time since it was discovered in 2001. Video provided by Newsy
Powered by NewsLook.com
Obama: U.S. Must Have "smartest Airports, Best Power Grid"

Obama: U.S. Must Have "smartest Airports, Best Power Grid"

Reuters - US Online Video (July 17, 2014) President Barak Obama stopped by at a lunch counter in Delaware before making remarks about boosting the nation's infrastructure. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Crude Oil Prices Bounce Back After Falling Below $100 a Barrel

Crude Oil Prices Bounce Back After Falling Below $100 a Barrel

TheStreet (July 16, 2014) Oil Futures are bouncing back after tumbling below $100 a barrel for the first time since May yesterday. Jeff Grossman is the president of BRG Brokerage and trades at the NYMEX. Grossman tells TheStreet the Middle East is always a concern for oil traders. Oil prices were pushed down in recent weeks on Libya increasing its production. Supply disruptions in Iraq fading also contributed to prices falling. News from China's economic front showing a growth for the second quarter also calmed fears on its slowdown. Jeff Grossman talks to TheStreet's Susannah Lee on this and more on the Energy Department's Energy Information Administration (EIA) report. Video provided by TheStreet
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:
from the past week

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