Aircraft Performance Data

[klem]

General:

Altimeter set to 1013Mb for standard Pressure Altitude readings although 'Standard Day' is calculated into results regardless of Altimeter setting.

Fuel load 65% for both Level Speed and Climb to Height tests to match A&AEE test weight of 67850lbs.
For level speed tests, aircraft already flying at altitude were selected for each altitude test so each one started with 65% fuel.

Level Speed tests:
Conducted with Radiator fully open.
Speed approximately 5% to 10% down on A&AEE tests up to 10,000 feet.

Normal max boost speed ("6.25lbs") slightly increased on previous patch. BCO speeds down on previous patch.

Climb to Altitude test:
Time to 10,000 feet 5.8 minutes vs 4.6 minutes in A&AEE Tests, ~26% slower.
Time to 15,000 feet approx 9 minutes vs 6.85 minutes in A&AEE Tests, ~30% slower.

My flying (see ROC) appears somewhat erratic as it was hard to maintain the target climb rate or climb speed. That is why I made three separate tests and charted all three. The ROCs at the specific charted points appear to vary wildly but in fact the ROC was much more steady than appears on the chart which is probably why the Times to Height were almost identical and all well below the A&AEE tests.

Other Observations:
BCO and full rpm/boost leads to early engine failure making it hard to establish some level speed tests. Engine overheat seems to be overmodelled.

Sources:
Level Speed:
http://www.wwiiaircraftperformance.o...rricane-I.html
See
Aeroplane and Armament Experimental Establishment
Boscombe Down
12th June 1940
Hurricane L.2026
(Merlin III)
(Rotol Constant Speed Airscrew)

Hurricane I Level Speed Performance Chart (currently using figures without R.A.E. PEC correction)


Climb Test:
http://www.wwiiaircraftperformance.o...ane/l2026.html
See
CLIMBING TRIALS
Weight:- 6750 lb.