New invention could benefit RVers.
A Highland Park Illinois teenager has invented a device which can increase our fuel economy by 10% to 20%. Read the Scientific American article here.
Forum Discussion
NASA sponsored some study on aerodynamics of vehicles - that appears to be able to translate pretty well to RVs.
http://adaptiveaerodynamic.com/NASA/88628main_H-2283.pdf
As you can see, at the speeds we travel, the front is of minor concern. A flat front with radiused corners is fine. It is at the back that we are missing the most benefit.
The bump on the bus roof may be beneficial, but it is very, very unlikely to be 20% and it is going to be of very limited value to most busses in any city who rarely see speeds where aerodynamics are a significant player in fuel economy.
I'd love to see a back-to-back test of a largish RV or trailer with a boat-tail.
http://adaptiveaerodynamic.com/NASA/88628main_H-2283.pdf
As you can see, at the speeds we travel, the front is of minor concern. A flat front with radiused corners is fine. It is at the back that we are missing the most benefit.
The bump on the bus roof may be beneficial, but it is very, very unlikely to be 20% and it is going to be of very limited value to most busses in any city who rarely see speeds where aerodynamics are a significant player in fuel economy.
I'd love to see a back-to-back test of a largish RV or trailer with a boat-tail.
