Library ministry

Ministry of Supply

Ministry of Aviation Supply

Ministry of Defence

MINISTRY OF AVIATIOid

1959 SUMMARY A method is given for representing the results of wind-tunnel tests of fan wings in a non-dimensional form suitable for the analysis of transition mQtion3. The procedure takes into account the effect on power requirements of variation of thrust engine loading in relation to that of the fan. As an example, results are displayed of tests of a rectangular wing of aspect ratio I with f...

MINISTRY OF SiPPLY

Requxrements are discussed for an Iunpllfier slutable for subsonic and supersonx tdx&?nce work nxth hot xlres. Such an empllfier needs to have a constant gain at low frequencies, ad a gain rlslng In proportion to frequency at h& frequenmes, UI order to compensate for the the-1 lag of tho hot vzrc. A fairly sharp cutoff 1s required at the high frequency end, and it is desirable that this cutoff ...