Help with Dauph N2 perf question..

[capt tosspot]

As wot I dont have any manuals with me and have never flown one anyhow, is there anyone who can answer this: What is roughly the max weight I can lift out of a typical UK hospital pad (ie surrounded by trees, cars, old folks homes in the middle of a built up area). The weight I have without fuel is 2800 kg, we're at 1000' and its +20c. Working to CAT not HEMS.

Useful answers will be awarded a months supply of green tea.

Ay thang yoo:D

[eivissa]

http://img442.imageshack.us/img442/6920/365ba.jpg

http://img291.imageshack.us/img291/8060/365o.jpg

[cpt]

Hello Capt Tosspot,

I would rather use the chart 14 "maximum take-off and landing weights on helipads" in supp 1(cat A ops) of the RFM.
It shows a MTOW of 3320 Kg. Your DL is then: 3320-2800= 520 (to share between payload and fuel)

The take-off profile is the vertical backward climb to CDP (130' height) and you need a minimum helipad surface of 21 m, this garantees the 35' clearance in case of engine failure at CDP.
If your helipad surface is >= 105 m (or "confined area) you can vertically climb to CDP (instead of a backward climb)
You'll also have to work-out you obstacles clearance on your take-off path (charts 15 & 16 "climbing performances")

[capt tosspot]

Thanks for the graphs and advice guys, thats saved me a shed load of looking around. Vielen Dank!:D