[Vhfcn-l] Vhfcn-l Digest, Vol 104, Issue 24

[Roger W. Ek]

> On Jan 26, 2020, at 10:08 PM, PAUL BIELECKI via Vhfcn-l <vhfcn-l at lists.vhfcn.org> wrote:
> 
> AF base east of BMT called AF Bamh Me Tuot and they had a unit flying UH1N models as guns 

The Air force had some gun ships with the GE T58-8P which had 1,450 HP like we had in the UH-2B. 

Air Force[edit <https://en.wikipedia.org/w/index.php?title=Bell_UH-1_Iroquois&action=edit&section=5>]
The United States Air Force <https://en.wikipedia.org/wiki/United_States_Air_Force>'s (USAF) competition for a helicopter to be used for support on missile bases included a specific requirement to mandate the use of the General Electric T58 <https://en.wikipedia.org/wiki/General_Electric_T58> turboshaft <https://en.wikipedia.org/wiki/Turboshaft>as a powerplant. The Air Force had a large inventory of these engines on hand for its fleet of HH-3 Jolly Green Giant <https://en.wikipedia.org/wiki/Sikorsky_S-61R> rescue helicopters and using the same engine for both helicopters would save costs. In response, Bell proposed an upgraded version of the 204B with the T58 engine. Because the T58 output shaft is at the rear, and was thus mounted in front of the transmission on the HH-3, it had to have a separate offset gearbox (SDG or speed decreaser gearbox) at the rear, and shafting to couple to the UH-1 transmission.
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