Originally Posted by
rick130
.....
Airflow isn't always what it seems
Yes. I am reminded of the Britten Norman Islander aircraft. Not long after it went into production the BN-2 was replaced by the BN-2a. The only difference was a changed profile of the rear of the engine housing, from duck tail to a wedge, and a fairing added to the undercarriage legs to increase the chord by about 30%.
The result was a marked increase in short field performance, despite an increase of 5% in both gross weight and load capacity (the modifications had no significant weight penalty). Just reduced turbulence round the engines and undercarriage legs.
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
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