000001770 001__ 1770 000001770 005__ 20231123151210.0 000001770 035__ $$a1797 000001770 037__ $$aGENERAL 000001770 245__ $$aAn Introduction to the Vortex Theory of Propellers 000001770 269__ $$a1948 000001770 520__ $$aThe recorded history of the Institute, technical papers, documented discussion and author reply. 000001770 7001_ $$aThomas, K H W 000001770 773__ $$tTransactions$$j60$$k1 000001770 8564_ $$90f921b65-3fc5-4ed8-b152-1fad69e706cf$$s4747966$$uhttps://library.imarest.org/record/1770/files/1797.pdf