El_Tigre
Prince
Lets talk about some numbers.
In the following, I'm using data from this website. Here's the relevant paragraph about Lend-Lease:
Add another 2,400 planes to the RAF in 1941 alone. "Not important"?!?
Have a look at the table "Aircraft Production" here:
Note that Germany produced
8,295 planes in 1939
10,826 in 1940 and
11,424 in 1941.
That's not an significant increase!
Lets have a look at GB's aircraft production here:
7,940 in 1939
15,049 in 1940
20,094 in 1941!!
Even more important is that GB started to mass produce medium and heavy bombers in 1940, some of the latter even 4-engine bombers! In other words, GB could have produced several thousand more fighters if needed by reducing the bomber programm.
You argue that Germany could have produced more planes without Operation Barbarossa (which I highly doubt anyway), but Britain switched production, too: already in late 1940 it felt safe enough to build bombers instead of fighters. Add to that that Germany lost 2 planes for every British plane shot down during the Battle of England (AA, longer distance to bases, disorientation,...), and it should be obvious that Germany had only a small window of opportunity for a successful invasion of Britain: in Summer 1940. Thererafter, the situation would become worse and worse - even without Barbarossa.

In the following, I'm using data from this website. Here's the relevant paragraph about Lend-Lease:
Of the 2,400 aircraft exported between the passing of the Act and the end of the year, 2,300 had been ordered by March 1941 and paid for in cash. The same is true of 165 out of 951 tanks supplied in the same period, and of 8,000 out of 13,000 lorries.72 It was not until the second quarter of 1942 that the bulk of munitions accruing to this country and to the other 'British' theatres of war had been appropriated under the Lend-Lease Act.
Add another 2,400 planes to the RAF in 1941 alone. "Not important"?!?
Have a look at the table "Aircraft Production" here:
Note that Germany produced
8,295 planes in 1939
10,826 in 1940 and
11,424 in 1941.
That's not an significant increase!
Lets have a look at GB's aircraft production here:
7,940 in 1939
15,049 in 1940
20,094 in 1941!!
Even more important is that GB started to mass produce medium and heavy bombers in 1940, some of the latter even 4-engine bombers! In other words, GB could have produced several thousand more fighters if needed by reducing the bomber programm.
You argue that Germany could have produced more planes without Operation Barbarossa (which I highly doubt anyway), but Britain switched production, too: already in late 1940 it felt safe enough to build bombers instead of fighters. Add to that that Germany lost 2 planes for every British plane shot down during the Battle of England (AA, longer distance to bases, disorientation,...), and it should be obvious that Germany had only a small window of opportunity for a successful invasion of Britain: in Summer 1940. Thererafter, the situation would become worse and worse - even without Barbarossa.