SUBSIM Radio Room Forums - View Single Post

Rhodes · 03-21-18, 06:14 PM

Pisces, do not know if I understood your last paragraph, but if it is about if the torpedo speed could be changed via the TDC or not, it could be.

The torpedo speed vt and quotient of the target and torpedo speed vgvt was entered by means of the knobs.
In the early versions of the calculator, the torpedo speed knob could be set only in three positions (30, 40, or 44 knots – the speed of the steam torpedoes G7a then in service could be set to these values, while the electric torpedoes G7e could cruise only at the speed of 30 knots). The quotient vgvt
and the torpedo speed vt were given as inputs of the multiplier unit ( ), which calculated the target speed vg indicated by the dial. After setting the desired torpedo speed, the operator turned the knob responsible for setting the quotient of the target and torpedo speed, to make the pointer of the target speed dial show the correct value.
Thereby, instead of using the complex dividing unit for calculating the quotient, the much simpler multiplier unit could be used.
In the later version of the calculator, the target and torpedo speed were shown by the compound dial. The torpedo speed could be set to any value in the range 10 to 46 knots. This was due to adjusting the calculator’s construction for usage with the LUT and acoustic G7e torpedoes.

From: http://www.tvre.org/en/torpedo-calculator-t-vh-re-s3

03-21-18, 06:14 PM	#6
Rhodes Silent Hunter Join Date: Aug 2005 Location: Figueira da Foz, Portugal Posts: 4,520 Downloads: 110 Uploads: 0	Pisces, do not know if I understood your last paragraph, but if it is about if the torpedo speed could be changed via the TDC or not, it could be. The torpedo speed vt and quotient of the target and torpedo speed vgvt was entered by means of the knobs. In the early versions of the calculator, the torpedo speed knob could be set only in three positions (30, 40, or 44 knots – the speed of the steam torpedoes G7a then in service could be set to these values, while the electric torpedoes G7e could cruise only at the speed of 30 knots). The quotient vgvt and the torpedo speed vt were given as inputs of the multiplier unit ( ), which calculated the target speed vg indicated by the dial. After setting the desired torpedo speed, the operator turned the knob responsible for setting the quotient of the target and torpedo speed, to make the pointer of the target speed dial show the correct value. Thereby, instead of using the complex dividing unit for calculating the quotient, the much simpler multiplier unit could be used. In the later version of the calculator, the target and torpedo speed were shown by the compound dial. The torpedo speed could be set to any value in the range 10 to 46 knots. This was due to adjusting the calculator’s construction for usage with the LUT and acoustic G7e torpedoes. From: http://www.tvre.org/en/torpedo-calculator-t-vh-re-s3 __________________ http://www.flickr.com/photos/16416646@N05/ Last edited by Rhodes; 03-22-18 at 05:37 AM.