PPRuNe Forums - View Single Post - Gaining An R.A.F Pilots Brevet In WW II
View Single Post
Old 16th May 2012, 16:22
  #2577 (permalink)  
Danny42C
Guest
 
Posts: n/a
Vultee Vengeance Part 4. (Danny takes a Close Look)

The rest of the first day was spent in settling in, and getting to know people. Besides the NCO Navigators and Wop/AGs of the former bomber squadron, there were a few of their NCO pilots: W/O "Doug" McIlroy (NZ) and Sgts. "Reg" Duncan (CAN) and George Davies (RAF) on "A" Flight. As far as I remember, there were no officer pilots, other than "Topper" - F/O Topley - the Flight Commander. But he had two Navigator officers: P/O Robertson and another P/O whom I will not name for reasons which will later become obvious. Reg's dog "Spunky" (which he'd had for a month or so) completed the family. I have a Flight photograph taken in the first few days of '43, which I will post if I ever learn how to do it.

Domestic arrangements were simple. I was allocated a charpoy in the Sergeants' basha (this was long before I made my air-transportable DIY bed), and took a half-share in somebody else's "bearer". By now we'd all got a "tin box" (uniform case) from a local bazaar (Rs20) to secure our kit against theft and the "white ants" (termites) which were a constant plague. This box went under your charpoy.

Stores issued me with goggles, helmet (tropical, cloth) and mask/mike. That's all you'll need out here! (they gave me my own parachute, too). I still had my American "Ray-Bans"; they must have had issue sun-glasses, but I didn't draw any.

The Armoury gave me a Smith & Wesson .38 pistol, and a little cardboard box of 18 rounds. "That's your lot", they said "No more - sell your life dearly !" So back to stores for a lanyard, blue webbing holster, ammo pouch, shoulder strap and belt. The clobber was starting to build up. All this was padlocked into your tin box for the time being, as you didn't need to swagger around armed to the teeth in Bengal.

Next morning we strolled across to the Flights. I looked closely at a Vengeance; it was not love at first sight. The thing was enormous. The Spitfire is really quite a small aircraft. This monster was twice the size. With a 48ft wingspan, it was 40ft long and stood 14ft high to the top of the engine cowling. And now I had better start with a technical description, insofar as I can remember details.

It was a low mid-wing single engined all-metal monplane with two cockpits in tandem. All-up weight was around 14,000 lbs, including a bomb load of 1500 lbs: two 500 lb in an internal bomb bay and a 250 lb under each wing. Two .300 Brownings were mounted in each wing. Much more concerning these guns will be related in a later Post.

An inch yellow line, painted fom the nose along the top of the fuselage to the base of the screen was all the bombsight we needed. Twin .303 Brownings on a hand-held mounting fired back from the rear cockpit (there was nothing to stop you shooting your own tail off !).

This was the Navigator/Gunner's position. He had a swivel seat, a small map table in front of him, above this an altimeter and an ASI. And they gave him very rudimentary dual controls: throttle, rudder pedals (no wheelbrakes) and a stick (detachable and stowed at the side of the cockpit) . No trims and no hydraulic controls. The idea must have been that, if his pilot were incapacitated, the back-seat man could try belly-landing (wheels-down, he'd probably kill them both). We reckoned his best bet would be to fly home, bale out and leave his pilot to it !

He (and the pilot) had, most importantly, a dual hand "wobble pump". This would maintain fuel pressure and keep the engine running if all electric fuel pumps failed. The action was exactly that of a water pump in a caravan.

There was an intercom and a short-range US R/T set. No oxygen was fitted, but then we didn't need it. There was no point in climbing above 12,000 ft for a dive, and there is nothing that high in India if you stay away from the Himalayas.

There was never any question of night flying. We had navigation lights but no cockpit or landing lights. In any case the thing would be very difficult to fly by night because of flame dazzle from the open exhaust stubs. And there were few airfields in India lit after dark, anyway.

The power plant was the Wright Double Cyclone GR-2600- (about 42 litres) -A5B. This was a 14-cylinder aircooled twin row radial, rated at 1600 hp at 2400 rpm and 40 in. of manifold pressure (about +5 lb boost to you and me). This drove a three-bladed propeller (with CSU) of 12 ft diameter.

Total fuel was (as far as I can remember) 220 US gallons, split between five main fuel tank groups and a 20 gallon "trap" tank, which took the fuel pumped from the main tanks and fed it to the engine. The wobble-pump was the back-up for this. In the Mk. 1, all six pumps were immersed electric units, but in later Marks the electric trap-tank pump was replaced by an engine-driven unit (to relief and satisfaction all round).

100 octane was used at 50-60 galls/hr (cruising), giving a comfortable endurance of three hours and a range of around 500 miles. (Yes, I know that Wiki gives totally different figures, but theirs must be "maker's figures", to be regarded in the same light as the mpg figures at the bottom of car adverts ! The Wiki speeds are also IMHO, strictly for the birds).

Oil was fed to the dry-sump engine from a 21-gallon tank just forward of the firewall. Consumption was heavy at 1-2 galls/hr, and had to be watched carefully. Past engine neglect (story elsewhere) could cause a sudden gross rise in oil consumption. There were cases where the whole 21 gallons were used, and the engine failed, on a single flight (there being no contents gauge).

I suspect all this may be boring, and there's more to come, but bear with me, for you (and I !) must Know Our Foe.

Enough for the moment, more later,

Ta-Ta,

Danny42C


Takes all sorts. 

Last edited by Danny42C; 24th Nov 2013 at 01:13. Reason: Wrong name (McAvoy should be McIlroy, line 3)