BK25

Two stage. Launched 25 November 1965 at 22:50.

Apogee 393 miles. Re-entry head: Copper sphere.

The performance of the

first stage was excellent. A flare was fitted to the second stage to highlight ignition. The sabot and lanyard system seemed to be a success. The head was recovered the following morning. It had survived the impact with the ground but the halves had flattened on impact and flew apart.

Summary of Black Knight Launches

Vehicle

Stages Launch date

Empty weight (lb) All up weight (lb)

Apogee (miles)

1

1

7 September 1958

1,424

13,072

140

3

1

12 March 1959

1,474

12,660

334

4

1

11 June 1959

1,474

13,194

499

5

1

29 June 1959

1,500

12,645

275

6

1

30 October 1959

1,541

13,095

455

8

2

24 May 1960

2,003

13,719

350

9

2

21 June 1960

2,022

13,739

301

7

1

25 July 1960

1, 600

13,371

330

13

1

7 February 1960

1,555

12,813

427

14

2

9 May 1961

2,062

13,230

258

17

2

7 June 1961

2,015

13,235

362

15

1

1 May 1962

1,554

13,448

494

16

2

24 August 1962

2,183

13,787

356

18

2

30 November 1962

2,174

13,941

358

11

1

17 October 1963

322

19

2

6 August 1964

2,228

14,187

374

20

2

6 November 1964

2,181

14,122

391

21

2

24 April 1965

2,173

14,106

404.6

23

2

27 July 1965

2,191

14,150

306.1

24

2

29 September 1965

2,246

14,182

376

25

2

25 November 1965

2,149

14,021

393