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Aviation History
1946
1946 - 2020.PDF
384 FLIGHT OCTOBER IOTH, 194O CIVIL SEA OTTfcR heating ducts, the space available is still a goodly amount. For general utility work in a "tough" region of the world, the cabin volume must necessarily be available both for freight.and passengers, either alternatively or together. Fox this requirement the cabin floor has been strengthened and provided with lashing points, and the modified de Havilland Rapide-type ^ seats are arranged for easy removal^ ( " and reattachment. *•* The seating arrangement embodies " three chairs to port and one to star-f board, slightly staggered to afford easy passage between them. On the' starboard side of the cabin, opposite the rear seat, is a "hold-all" for passengers' hand luggage, etc. Thi.-, consists of a stout net anchored at the base to the junction of wall and floor and slung at the top edge by two bungee bridles carrying hook- off at the discretion of the passengers and aerodynamic extraction substituted, or vice versa. Warm air is de- livered to vents at each seat station from a 15,000 B.T.U. capacity Janitrol heater, housed in the after compartment of the hull and remotely controlled by the pilot, whose cockpit it also serves. Soundproofing is carried out to the cabin walls and roof by means of a doubled glass-wool blanket covered with an internal ceiling surface of 24 gauge Alclad sheet, to which the Vvnide interior finish is attached. This which clip over a fore-and-aft rail. A simple yet neat and effective device. Natural lighting is admitted to the cabki by the exist- ing windows and ports, modification extending only to the addition of an extra port in each wall at the rear of the cabin (thus there are two per side) and to the blanking-off .of part of the side windows at the front of the cabin, this latter course being rendered necessary by the deletion of ihe original deflector screen. Fenestration All windows in the cabin, including the ports, are of air-sandwich double-panel type, and the forward window on the port side is arranged as a detachable unit to serve as a 24in x io,in freight-loading hatch; the complementary starboard window is a knock-out type to act as an escape hatch. Artificial lighting is provided by four 5m diameter panels in each half of the cabin, two per side being incorporated in the ventilating ducts. Fresh, cool air is admitted through four "mush- room " cowls in the hull deck, two per side, which feed internal ducts running along the junction of walls and roof, the air being delivered into the cabin through individual punkah louvres. Each cowl intake is arranged with a lever control so that ram intake may be shut These two photographs, and th:.t onthe following page, are of Naval ver- sions of the Sea Otter, but the generalappearance of the civil conversion introduces little change other thandeletion of martial equipment, and a brighter colour scheme. latter material is a synthetic leather- cloth of excellent appearance and durability. The colour scheme for the interior is two shades of green, and light and dark fawn. The cabin is divided from the after compartment by a half-bulkhead and door at the rear-spar station, and behind the bulkhead on the port side is an Elsan chemical closet. This rear compartment is actually ths main entry " vestibule" to the cabin, since normal passenger access to and from the interior will be via the deck hatch and a companion ladder down into the hull/ The companion ladder is of wood, with wide treads, and is hooked over the hatch coaming and pegged into CIVIL SEA OTTER. f55 b.h.p. Bristol Mercury 30 engine driving Rotol 3-blado lift 3in diameter airscrew. Span 46ft Length 39ft 4|in Height 18ft lOin Width, wings folded 17ft 9in Max speed—at 5.000ft 150 m.p.h. Time to take-off, from water, still air 28.6 sec Distance to clear 50ft, from land, still air 661 yards Initial rate of climb • E08ft/min( Time to 5,000ft 6.7 min > Service ceiling l3,800fi Cruising speed Tor max range ... ... ... ... ... 100 m.p.h. Normal range 520 miles Fuel for normal range 162 gall Max range 700 miles Fuel for max range 206 gall Empty weight 6.465 Ib Fuel (162 gall) 1,166 Ib Oil 99 Ib Disposable load 2,120 Ib All up weight 9,850 1b Note : Max range is obtained either : (a) with disposable load of 2,120 Ib, undercarriage removed, or (b) with disposable load of 1,790 Ib, undercarriage fitted.
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