Spitfire V Boost??? - Aircraft of World War II

Faustnik · 10-17-2009, 07:19 PM

Most of the Spitfire V Merlin 45 data has maximum boost is 9 lb. or 16 lb. What date was the 9 lb. boost increased to 16 lb., or 12 lb.?

My favorite Spitfire site Spitfire Performance Testing

Boost (lb/sq.in.)

(i) Max. for climbing (normal rating)(1 hr. limit) +9
(ii) Max. for all-out level flight (normal rating)(5 minute limit) +9
(iii) Max. for all-out level in special emergency (prior to increase to +16) +12
(iv) Max. for climb and level flight (combat rating)(3 min. limit) +16

Whan date was special emergency +12 boost used?

Thank you!

jerryw · 10-22-2009, 12:35 AM

Have a look at "Merlin 40 series performance" on page 3, there's quite a lot of info on this subject there.

10-17-2009, 07:19 PM	#1
Faustnik Junior Member Join Date: Feb 2009 Posts: 4	Spitfire V Boost??? Most of the Spitfire V Merlin 45 data has maximum boost is 9 lb. or 16 lb. What date was the 9 lb. boost increased to 16 lb., or 12 lb.? My favorite Spitfire site Spitfire Performance Testing Boost (lb/sq.in.) (i) Max. for climbing (normal rating)(1 hr. limit) +9 (ii) Max. for all-out level flight (normal rating)(5 minute limit) +9 (iii) Max. for all-out level in special emergency (prior to increase to +16) +12 (iv) Max. for climb and level flight (combat rating)(3 min. limit) +16 Whan date was special emergency +12 boost used? Thank you! Last edited by Faustnik; 10-18-2009 at 01:47 AM.

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10-22-2009, 12:35 AM	#2
jerryw Member Join Date: May 2008 Location: Trentham, Victoria, AU Posts: 73	Have a look at "Merlin 40 series performance" on page 3, there's quite a lot of info on this subject there.